Earthquakes in the United States, October-December 1978

CECIL D. ANDRUS, Secretary

Discussion of tables............................................................

Modified Mercalli Intensity Scale of 1931•••••••••••••••••••••••••••••••••••••••

FIGURE 1.

ILLUSTRATIONS

Page "Earthquake Report" form•••••••••••••••••••••••••••••••••••••••••••••• D2 Map showing standard time zones of the conterminous United States..... 2.

Map showing standard time zones of Alaska and Hawaii.................. 3.

Map of earthquake epicenters in the conterminous United States for 4.

Map of earthquake epicenters in Alaska for October-December 1978 ••••••

s.

Map of earthquake epicenters in Hawaii for October-December 1978 •••••• 6.

Map summarizing the earthquake epicenters in the conterminous United 7.

States for January-December 1978•••••••••••••••••••••••••••••••••••••• Map summariziing the earthquake epicenters in Alaska for January-8.

}~p summarizing the earthquake epicenters in Hawaii for January-9.

Isoseismal map for the Owens Valley, California earthquake of 4 October 1978•••••••••••••••••••••••••••••••••••••••••••••••••••••••• 21 Isoseismal map for the central Idaho earthquake of 29 October 1978 •••• 27 Isoseismal map for the southeastern Idaho earthquake of 30 November 1978 •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 27 Isoseismal map for the southern Illinois earthquake of 5 December 1978 •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 28 Isoseismal map for the Seattle, Washington earthquake of 31 December 1978 •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 30

Arkansas......................................................... 14

Hawaii...................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Montana.......................................................... 28

Washing ton. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 9 Wyoming. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Dl DS

FIGURE 3.--Standard time zones of Alaska and Hawaii. The number in each zone shows the number of hours to be subtracted from Universal Coordinated Time to convert to local stan- dard time. (Subtract 1 hour less for local daylight-saving time.)

3ao

FIGURE 4.--Earthquake epicenters in the conterminous United States for October-December 1978, plotted from table 1.

Depth l!J Magnitude <5.0 {!I Magnitude 5.0-5.9 [!] Magnitude ~6.0

<70 km 2::70 km

FIGURE 5.--Earthquak.e epicenters in Alaska for October-December 1978~ plotted from table 1.

DB ao• as· too• ss·

as·

FIGURE 7.--Summary of earthquake epicenters in the conterminous tmited States for January-December 1978.

o

FIGURE 8.--Summary of earthquake epicenters in Alaska for January-December 1978.

-------------------------------------------------------------------------------------------------------------- ------------------ intensity ----------- -------------------------------------------------------------------------------------------------------------- --------------------------------------------------------------------------------------------------- --------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------

s.o -------------------

G ocr. --------------------------------------------------------------------------------------------------------------

OCT. 27 OCT. 27 OCT. 29 OCT. 30 OCT. 31 NOV. NOV. NOV. NOV. NOV. NOV. NOV. NOV. NOV. NOV. NOV. NOV. NOV. NOV. NOV. NOV. 10 NOV. 10 NOV. 13 NOV. 14 NOV. 14 NOV. 14 NOV. 15 NOV. 15 NOV. 15 NOV. 15 NOV. 15 NOV. 16 NOV. 16 NOV. 16 NOV. 18 NOV. 19 NOV. 19 NOV. 20 NOV. 22 NOV. 24 NOV. 24 NOV. 24 NOV. 25 NOV. 26 NOV. 27 NOV. 28 DEC. DEC. DEC. DEC. DEC. DEC. DEC. DEC. DEC. DEC. 10 DEC. 14 DEC. 14 DEC. 14 DEC. 14 DEC. 15 DEC. 15 DEC. 17

03 39 02.7 04 29 31.5 01 25 08.0 11 11 38.4 12 28 30.1 15 00 16.3 15 17 22.4 23 12 17.9 00 12 52.8 OS 22 18.6 16 47 17.8 12 17 26. 7 17 35 os.s 17 36 14.4 18 22 56. 7 06 35 30.1 09 29 u.s 08 03 36.5 22 17 19.8 OS 44 06.9 15 22 54.5 23 42 03.8 12 OS 49.0 10 02 24.8 20 34 18.1 22 2 7 45. 7 10 20 22.5 13 33 30.5 15 59 35. 3 18 09 24.0 21 06 31.6 07 58 51.9 14 44 12.8 17 54 02.4 17 11 53. 1 12 06 13.7 19 42 35.7 23 41 19.1 15 42 55.1 00 28 12.8 07 01 04.2 08 50 45.4 02 41 ss.s 00 45 46.6 06 01 32.0 17 41 04. 1 21 57 20.0 19 39 31.2 12 11 06.4 11 OS 35.2 00 16 49.1 00 00 52.9 10 01 51.5 00 50 48. 1 17 10 38.8 10 26 18.5 11 22 Sh4 13 32 52.4 17 21 42.1 21 03 07.3 08 30 34.7 22 20 40.7 13 15 26.0 68.48 N. 148.69W. 33N

62. 20 N. 151.05 w. 102

62.84 N. 60.96 N. 150.32 w. 48 61.91 N. 149.57 w. 33N 3.5 59.17 N. 138.96 w. 23 62.53 N. 150. 11 w. 88 63.10 N. 150.68 w. 129 60.19 N. 53.89 N. 164.53 w. 27 53.40 N. 161.36 w. 33N 4.7 60.83 N. 149.90 w. 33N 63.14 N. 150.95 w. 135 51.93 N. 175.01 E. 33N 4.9 53.96 N. 139.84 w. 10 58.51 N. 150.51 w. 33N 63.90 N. 152.46 w. 44 63.24 N. 152.04 w. 33N 60.35 N. 147. 43 w. 33N

62. 37 N.

53.48 N. 165.94 w. 33N 4.7 58.13 N. 148.88 w. 33N 4.7 66.88 N. 143.86 w. 10 62.97 N. 60.51 N. 151.71W. 87 64.54 N. 147.03 w. 25 63.18 N. 150.48W. 112 61.83 N. 150.38 w. 48 60.10 N. 153.14 w. 151 62.61 N. 142.79 w. 76 62.24 N. 150.94 w. 77 63.12 N. 150.91 w. 143 62.74 N. 149.68 w. 40 64.50 N. 146.87 w. 56.12 N. 161.55 w. 182 63.33 N. 52.70 N. 172.48 E. 47 51.82 N. 176.95 w. 51 59.88 N. 148.72 w. 33N 3.6 62.03 N. 150.52 w. 74 62.11 N. 146.26 w. 10 61.99 N. 61.23 N. 146.81 w. 33N 59.83 N. 153.55 w. 145 58.81 N. 154.42W. 163 52.03 N. 170. 11 w. 11 59.69N. 151.66 w. 13 62.31 N. 149. 75 w. 74 65.04 N. 147.51 w. 24 60.14 N. 153.26 w. 137 54.66 N. 165.59 w. 127 62.56 N. 151.51 w. 92 68.33 N. 145.17W. 33N ... 60.36 N. 152.29 w. 117 61.40 N. 150.65 w. 73 61.66 N. 52.81 N. 174.31 w. 224 62.43 N. 150.64 w. 84 52.10 No 169.39W. 37 51.27 N. 178.04 w. 45 52.11 N. 175.23 E. 47 66.06 N. 150.85 w. 54 63.95 N. 147.42 w. 22

------------------ intensity source -------------------

153. 33 w. 155

151.12 w. 33N 4.0

146.54 w. 33N 3.4

Dl3

4.5 4.9 4.6 5.6 4.8 3.0M ... III G OCT. 30 01 A.M. AST 3.4M

3.2M 3.0M 3.1M 3.0M 3.0M

3. 2M
4. 1M

... G NOV. 19 02 A.M. AST 4.3M 5.2

3. 1M
4. 1M 3.3M

5.6 4.6M G OCT. II G OCT. G OCT. II G OCT. G NOV. G NOV. G NOV. G NOV. G NOV. G NOV. G NOV. G NOV. G NOV. G NOV. G NOV. G NOV. G NOV. G NOV. G NOV. G NOV. G NOV. G NOV. G NOV. G NOV. G NOV. G NOV. G NOV. G NOV. G NOV. G NOV. G NOV. G NOV. G NOV. G NOV.

v G NOV. 19 08 A.M. BST G NOV. G NOV. II G NOV. G NOV. II G NOV. G NOV. G NOV. G NOV. G NOV. v G DEC. IV G DEC. G DEC. G DEC. G DEC. G DEC. II G DEC. G DEC. G DEC. G DEC. G DEC. G DEC. G DEC. G DEC. v G DEC. 14 09 P.M. BST G DEC. IV G DEC. 26 OS P.M. AST 26 06 P.M. AST 28 03 P.M. AST 31 02 A.M. AST 1 06 A.M. YST 1 OS A.M. AST 1 01 P.M. AST 1 02 P.M. AST 1 06 P.M. BST 2 OS A.M. BST 3 02 A.M. AST 3 07 A.M. AST 3 06 A.M. BST 4 09 A.M. YST 4 08 P.M. AST 4 11 P.M. AST 5 10 P.M. AST 6 12 P.M. AST 7 07 P.M. AST 10 04 A.M. BST 10 01 P.M. AST 13 02 A.M. AST 14 00 A.~1. AST 14 10 A.M. AST 14 12 P.M. AST 15 00 A.M. AST 15 03 A.M. AST 15 OS A.M. AST 15 08 A.M. AST 15 11 A.M. AST 15 09 P.M. AST 16 04 A.M. AST 16 07 A.M. AST 18 06 A.M. BST

20 12 P.M. BST 22 OS A.M. AST 23 02 P.u. AST 23 09 P.M.• AST 23 10 P.M.• AST 24 04 P.M. AST 25 02 P.M. AST 26 08 P.M. AST 28 06 A.M. BST 2 11 A.M.• AST 3 09 A.M. AST 4 02 A.M. AST 6 01 A.M. AST 6 01 P.M. BST 7 02 P.M. AST 8 00 A.M. AST 8 02 P.M. AST 9 07 A.M. AST 10 00 A.M. AST 14 00 A.M. BST 14 03 A.M. AST 14 06 A.M. BST 14 10 A.M. BST

15 12 P.M. AST 17 03 A.M. AST

DEC. 17 DEC. 18 DEC. 20 DEC. 20 DEC. 22 DEC. 24 DEC. DEC. 24 DEC. 24 DEC. 24 DEC. DEC. 25 DEC. 25 DEC. 25 DEC. 25 DEC. 27 DEC. 28 DEC. 28 DEC. 29 DEC. 29 DEC. 29 DEC. 30 DEC. 31 DEC. 31

OCT. OCT. OCT. OCT. OCT. OCT. OCT. OCT. OCT. OCT. OCT. OCT. OCT. OCT. OCT. OCT. OCT. OCT. OCT. OCT. OCT. OCT. OCT. OCT. OCT. OCT. OCT. OCT. OCT. OCT. OCT. OCT.

14 53 22.9 11 44 59.8 07 17 03.5 10 15 41.7 03 25 29.9 06 37 54. 2 09 59 21.7 10 46 18.9 13 13 08.1 19 31 58.4 06 52 12.0 09 24 25.4 16 03 37.3 16 12 12. 7 16 25 20.9 19 so 33. 1 02 42 45.4 13 41 23.8 01 10 42.6 09 00 48.1 10 08 01.6 09 40 54.0 19 16 10.0 19 48 so.s

03 34 26.8 16 42 48.6 16 48 24.0 16 57 04.8 16 59 04.6 17 07 35.3 17 18 50.6 17 31 31. 1 17 33 04.6 17 39 02.9 17 43 46.8 17 46 47.5 17 49 28.5 17 54 ll. 3 18 01 53.3 18 03 42.4 18 07 00.2 18 09 32.8 18 12 42.1 18 19 51.8 18 20 47.1 18 22 41.6 18 44 43.2 19 22 25.0 19 47 41.9 20 09 33.2 20 11 42. 1 20 48 37.6 23 06 28.4 01 17 47.3 01 41 57.3 01 45 06.4 61.22 N. 152.41 w. 14/ 63.95 N. 147.55 w. 33N 63.17 N. 149.53 w. 33N 59.89 N. 55.5 7 N. 60.05 N. 150.58 w. 33N 3.8 65.59 N. 144.55 w. 33N 3.9 64.27 N. 63.56 N. 15 7. 59 vi. 33N s.o 59.39 N. 152.79 w. 91 63.06 N. 150.06 w. 121 58.75 N. 154.85 w. 158 51.74 N. 51.60 N. 173.22 w. 33N 4.3

51. 72 N.

54.23 N. 162.57 w. 37 61.97 N. 150.99 w. 61 63.94 N. 60.40 N. 152. 20 w. 110 53.05 N. 56.52 N. 153.59 w. 28 62.16 N. 147.90 w. 33N 62.37 N. 149.46 w. 61 62.21 N. 145.78 w. 17

35.97 N.

41.46 N. 37.53 N. 118.63 w. 37.52 N. 37.52 N. 37.53 N. 118.63 w. 12 37.45 N. 118.67 w. 37.50 N. 118.63 w. 37.55 N. 118.60 w. 10 37.53 N. 37.58 N. 37.55 N. 37.53 N. 118.62 w. 37.55 N. 37.55 N. 37.53 N. 118.65 w. 37.55 N. 37.55 N. 118.58 w. 37.50 N. 118.58 -1. 37.53 N. 118.63 w. 37.55 N. 118.60W. 37.52 N. 118.62 w. 37.52 N. 118.62 w. 37.53 N. 37.48 N. 37.57 N. 37.52 N. 118.62 w.

37. 52 N. 118.63 w.

37.53 N. 37.52 N. 118.60 w. 37.53 N. 37.47 N. 37.50 N. 152.52 w. 99 160. 37 \l. 12

173.12 w. 33N 4.3 173.17W. 33N 4.1

147.36 w. 33N 166.89 w. 33N 4.8

121.87 w. 118.66 w. 10 118.63 w.

118.60 w. 118.62 w. 10 118.62 w. 10 118.65 w. 118.57 w. 10

ll8. 50 w. 11

118.60 w. 118.78 w. 118.58 w. 10

ll8.65 w. 10 118.62 w. 118.68 w. 118.58 w. ALASKA--Continued

------------------ mtenslly source -------------------

2. 7M
3. 2M 3.8M 4.6M
4. 3M
5. 1 5.8P 3.2B 3.1P 4.4P
6. 4P 3.0P
7. 3P 3.8P 5.3P 3.8P
8. 2P
9. SP 3.4P 3.9P
10. 5P
11. 3P 3.4P
12. lP 3.1P
13. 2P
14. 4P 3.SP
15. 3P 3.0P 3.2P 3.4P 3.2P 3.0P 4.4P 3.3P 3.3P G DEC. G DEC. G DEC. G DEC.

IV G DEC. G DEC. G DEC. G DEC. IV G DEC. G DEC. G DEC. G DEC. G DEC. G DEC. G DEC. G DEC. G DEC. G DEC. G DEC. G DEC. G DEC. G DEC. G DEC. G DEC.

s NOV. P.M. CST

B OCT.

p OCT. VI B OCT. p OCT. p OCT. p OCT. p OCT. p OCT. p OCT. p OCT. p OCT. p OCT. p OCT. p OCT. p OCT. p OCT. p OCT. p OCT. p OCT. p OCT. p OCT. p OCT. p OCT. p OCT. p OCT. p OCT. p OCT. p OCT. p OCT. p OCT. p OCT. p OCT. 17 04 A.M. AST 18 01 A.M. AST 19 09 P.M. AST 20 00 A.M. AST 21 05 P.M. AST 23 08 P.H. AST 23 11 P.M. AST 24 00 A.~f. AST 24 03 A.M. AST 24 09 A.M. AST 24 08 P.M. AST 24 11 P.M. AST 25 05 A.M. BST 25 05 A.M. BST 25 05 A.M. BST 27 08 A.M. BST 27 04 P .H. AST 28 03 A.M. AST 28 03 P.M. AST 28 10 P.M. BST 29 00 A.M. AST 29 11 P.M. AST 31 09 A.M. AST 31 09 A.M. AST

3 07 P.M. PST 4 08 A.M. PST 4 08 A.M. PST 4 08 A.M. PST 4 08 A.M. PST 4 09 A.M. PST 4 09 A.M. PST 4 09 A.M .. PST 4 09 A.M. PST 4 09 A.M. PST 4 09 A.M. PST 4 09 A.M. PST 4 09 A.M. PST 4 09 A.M. PST 4 10 A.M. PST 4 10 A.M. PST 4 10 A.M. PST 4 10 A.M. PST 4 10 A.M. PST 4 10 A.M. PST 4 10 A.M. PST 4 10 A.M. PST 4 10 A.M. PST 4 ll A.M. PST 4 11 A.M. PST 4 12 P.M. PST 4 12 P.M. PST 4 12 P.M. PST 4 03 P.M. PST 4 OS P.M. PST 4 05 P.M. PST 4 05 P.M. PST

OCT. OCT. OCT. OCT. OCT. OCT. OCT. OCT. OCT. OCT. OCT. OCT. OCT. OCT. OCT. OCT. OCT. OCT. OCT. OCT. OCT. OCT. OCT. 10 OCT. 10 OCT. 10 OCT. 10 OCT. OCT. 11 OCT. 11 OCT. 11 OCT. 13 OCT. 14 OCT. 14 OCT. 16 OCT. OCT. 17 OCT. OCT. 20 OCT. 20 OCT. 21 OCT. 21 OCT. 24 OCT. 24 OCT. 25 OCT. 26 OCT. OCT. 29 OCT. 29 OCT. 29 OCT. 29 OCT. 30 NOV. NOV. NOV. NOV. NOV. NOV. 11 NOV. 12 NOV. 13 NOV. 13 NOV. 14 NOV. 16 NOV. 19 Table I.-Summary of U.S. earthquakes for October-December 1978-Continued

04 23 55.3 06 41 30.1 09 56 40.4 10 46 18.4 12 04 29.9 16 09 02.9 22 54 13.3 01 32 21.9 02 11 04. 1 16 37 10.4 21 04 3 7. 2 21 26 34.4 21 43 oo. 9 22 51 30.1 02 49 16.9 04 46 59.0 12 30 40.7 13 47 50.6 13 29 18.6 19 11 54.0 23 59 11.3 20 49 45.8 01 38 36.9 02 08 08.4 04 28 51.8 09 06 57.4 02 51 22.3 10 33 59.0 12 36 07.9 13 22 04.5 18 47 0 7. 7 20 59 44.6 23 38 41.8 02 18 07.0 04 22 44. 1 02 26 18.8 09 10 24.5 08 38 29.0 21 25 14.4 00 56 06.5 02 06 27.4 02 11 ss. 0 06 57 05.0 12 38 10.3 19 00 41.3 12 00 22.2 04 33 03.2 06 50 49.1 08 09 59.5 22 16 09.0 16 05 04.6 06 42 22.6 04 24 53.0 09 35 01.2 16 22 25.0 23 00 29.3 04 24 04.6 13 07 57.3 16 49 43.1 16 so 58.3 14 51 38.8 13 28 46.7 02 12 10.5 41.44 N. 121.87-1. 37.48 N. 118.63 w. 41.46 N. 121.88 w. 37.48 N. 118.65 w. 37.50 N. 118.63 w. 41.46 N. 37.55 N. 118.58 w. 12 37.57 N. 118.55 w. 12 37.52 N. 37.23 No 118.20W. 41.44 N. 121.88 w. 40.38 N. 124.27 w. 20 40.38 N. 41.42 N. 37.52 N. 118.67 w. 40.40 N. 124.60 w. 32 37.24 N. 118.21 w. 37.52 No 118.65 w. 37.52 No 118.70 w. 10 37.53 N. 118.60 w. 36.55 N. 36.68N. 121.37 w. 36.61 N. 37.50 N. 118. 60 -1. 38.80 N. 35.08 N. 35.51 N. 34.27 N. 117.05 w. 34.53 N. 116.10W. 41.43 No 121.88 w. 41.41 N. 36.93 N. 121.46 w. 10 37.48 N. 118.63W. 40.46 N. 124.30 w. 20 40.67 N. 41.43 N. 121.90 w. 33.83 N. 118.07 w. 34.23 N. 38.06 N. 41.42 N. 121.91 w. 33.90 N. 118.93 w. 38.09 N. 118.90 w. 38.06 N. 118.90 w. 34.23 N. 116.18 w. 37.52 N. 118.58 w. 37.26 N. 121.64 w. 40.35 N. 124.45 w. 20 40.30 N. 124.73 w. 20 33.92 N. 118.30 w. 34.32 N. 36.67 N. 121.36 w. 32.75 N. 115.52 w. 37.52 N. 118.60 w. 37.65 N. 37.53 N. 33.23 N. 116.07 w. 33.63 N. 39.49 N. 122.95 w. 34.43 N. 119.70 w. 13 34.43 N. 119.70W. 15 38.11 N. 119.16 w. 21 34.15 N. 117.60 w. 35.62 N.

------------------ intensity source -------------------

121.87 w.

118.65W.

124.26 w. 23 121.90 w.

121.19 w. 121.28 w.

119.82 w. 10 117 0 50 w. 119.53 w.

121.90 w.

127.22 w.

116.18 w. 118.91 w.

118.63 w.

118.05 w. 10 118.62 w. 117.88 l-1.

... ... 3.7B III B OCT. 15 06 P.M. PST 4.5

3. 2B 4.5P
4. OP
5. 2B 3.5P 3.6P
6. OB 3.5B
7. 6B
8. 3B 3.0B
9. 2P
10. 5B 3.1B 3.1P 3.2P 3.0P 3.0B 3.3B III 3.8B
11. 2P 3.1B 3.6P 3.0B 3.1P
12. 2P 3.2B 3.9B 2.9B 3.0P
13. 2B 3.0B 1.9P 3.2P 3.8B 3.1B 3.6P
14. 3B 3.4B 3.1P 3.9P 3.1B
15. 3B 3.8B 2.9P 3.6P 3.2B 2.8P
16. 3P 3.3B
17. SP 3.1P 2.7P 3.8B 3.2P 3.3P 3.0B
18. 2P 3.2P B OCT. p OCT.

IV B OCT. p OCT. p OCT. B OCT. p OCT. p OCT.

B OCT.

B OCT.

B OCT.

B OCT.

v

B OCT.

B OCT.

p OCT.

B OCT.

B OCT.

p OCT.

p OCT.

p OCT.

B OCT.

B OCT. II B OCT. p OCT. B OCT. p OCT. II B OCT. 10 06 P.M. PST p OCT. p OCT. B OCT. 11 OS A.M. PST B OCT. 13 10 A.M. PST B OCT. 14 12 P .H. PST p OCT.

B OCT. 15 08 P.M. PST B OCT. 16 06 P.M. PST p OCT. II p OCT.

B OCT. 20 01 P.M. PST B OCT. 20 04 P.M. PST p OCT. B OCT. 23 06 P.M. PST G OCT. p OCT. p OCT. IV B OCT. 27 04 A.M. PST II B OCT. 28 08 P.M. PST IV B OCT. 28 10 P.M. PST p OCT. IV p OCT. IV II B OCT. 30 08 A.M. PST p NOV. II p NOV. B NOV. p NOV. II p NOV. v p NOV. 10 08 P.M. PST IV B NOV. 12 05 A.M. PST p NOV. II p NOV. II B NOV. 14 06 A.M. PST p NOV. IV p NOV.

4 08 P.M. PST 4 10 P.M. PST 5 01 A.M. PST 5 02 A.M. PST 5 04 A.:t-1. PST 5 08 A.M. PST 5 02 P.M. PST 5 05 P.M. PST 5 06 P.M. PST 6 08 A.M. PST 6 01 P.M. PST 6 01 P.M. PST 6 01 P.M. PST 6 02 P.M. PST 6 06 P.M. PST 6 08 P.M. PST 7 04 A.M. PST 7 05 A.M. PST 8 05 A.M. PST 8 11 A.M. PST 8 03 P.M. PST 9 12 P.u. PST 9 05 P.M. PST 9 06 P.M. PST 9 08 P.M. PST 10 01 A.M. PST 11 02 A.M. PST 11 04 A.M. PST

14 03 P.M. PST

19 01 A.M. PST 20 00 A.M. PST

20 06 P.M. PST 23 10 P.M. PST 25 04 A.H. PST 26 11 A.M. PST

29 00 A.M. PST 29 02 P.M. PST 0 10 P.M. PST 2 08 P.M. PST 5 01 A.M. PST 6 08 A.M. PST 9 03 P.M. PST

13 08 A.M. PST 13 08 A.M. PST 16 05 A.M. PST 18 06 P.M. PST

NOV. 19 NOV. 19 NOV. 19 NOV. 19 NOV. 20 NOV. 20 NOV. 20 NOV. 21 NOV. 22 NOV. 25 NOV. 25 NOV. 28 DEC. DEC. DEC. DEC. DEC. DEC. DEC. 13 DEC. 14 DEC. DEC. 15 DEC. 15 DEC. 15 DEC. 16 DEC. DEC. 20 DEC. 25 DEC. 29 DEC. 29 DEC. 31

OCT. 15 OCT. 15 NOV. 11 NOV. 22 NOV. 30 DEC.

NOV.

OCT. 10 OCT. 11 OCT. 13 OCT. 13 OCT. 15 OCT. 21 OCT. 28 OCT. 29 NOV. NOV. NOV. 11 NOV. 13

03 55 31.6 04 20 05.6 17 40 56.9 18 00 16.4 06 55 09.4 06 58 45.0 21 21 49.1 20 54 52.5 19 09 42.8 03 24 55.3 04 06 41.4 16 54 59.0 02 29 41.3 23 20 46.5 10 03 49.3 11 2f 48.7 15 44 44.4 16 02 2 7. 7 03 03 oo.o 07 38 12. 1 08 55 20.4 03 01 19.0 03 36 58.0 12 2 7 57.8 11 17 28. 7 20 05 48.7 04 14 31.7 10 25 32.8 04 26 43.2 06 30 30.4 12 06 3 7. 8

21 17 22.9 17 34 58.2 23 00 24.3 23 10 21.0 15 35 48.6 09 09 53.7 22 37 33.2 02 44 13.7 02 25 01.6 22 56 57.8 06 05 23.3 01 08 02.5 34.02 N. 118.65 w. 12 33.85 N. 118.17 w. 12 33.85 N. 118.18 w. 33.85 N. 118.17 w. 12 34.15 N. 116.97 w. 34.15 N. 116.97 w. 34.15 N. 116.98 w. 34.02 N. 116.43W. 35.32 N. 118.52 w. 37.50 N. 118.70 w. 37.53 N. 118.68 w. 35.08 N. 33.48 N. 33.93 N. 116.68 w. 34.38 N. 119.75W. 34.37 N. 119.75 w. 36.54 N. 121.08 w. 38.79 N. 122.78 w. 37.52 N. 118.65 w. 36.18 N. 120. 79 w. 34.40 N. 119.50 w. 38.84 N. 123.02 w. 33.90 N. 116.17 w. 33.90 N. 41.17 N. 124.07 w. 20 36.26 N. 35.62 N. 117.53 w. 35.47 N. 118.50 w. 37.23 N. 33.93 N. 118.33 w. 38.05 N. 118.89 w.

40.62 N. 127.22 w. 40.59 N. 127.24l-l. 40.54 N. 126.54 w. 40.31 N. 125.22 w. 40.43 N. 127.15 w. 40.63 N. 127.70 w. 15

40.47 N. 107.61 w.

19.93 N. 155.81 w. 18

19. 22 N. 155.56 w.

19.28 N. 156.25 w. 15 19.30 N. 156.29 w. 12 19.38 N. 155.07 w. 19.44 N. 155.40 w. 10 21.56 N. 157.98 w. 19.21 N. 155.35 w. 45 19.33 N. 155.18 w. 19.80 N. 156.13 w. 12 19.36N. 155.08 w. 19.37 N. 155.08 w.

------------------ Intensity source -------------------

117.52 w. 116.45 w.

116.17W.

120.67 w.

ll8.30 w.

4.8 4.8 4.3 3.0P

2. 7P 3.1P
3. 8P 4.2P 3.5P 3.1P 3.0P 3.0P 3.4P 3.5P
4. 3P 3.1P 3.6P 3.2P 2.2P 3.1B 3.4B
5. 2B 3.1B 3.1P
6. OB
7. 3P
8. 3P
9. 7B
10. OB 3.0P 3.0P
11. 2P
12. 3P 3.2B

4.0 4.1B 4.3B 4.2 4.1

4. 2B 3.9B 4.0B 4.0B
5. 2H 3.0H 3.0H 3.3H 3.3H
6. 2H 3.1H 3.1H
7. OH
8. 3H
9. 2H p NOV. p NOV. II p NOV. IV p NOV.

III p NOV. p NOV. III p NOV. II p NOV. p NOV. p NOV. II p NOV. II p NOV. p DEC. II p DEC. III p DEC. II B DEC. B DEC. B DEC. 12 07 P.M. PST B DEC. 13 11 P.M. PST IV B DEC. 14 07 P.M. PST p DEC. p DEC. B DEC. 16 03 A.M. PST G DEC. 18 12 P.M. PST p DEC. p DEC. p DEC. p DEC. II B DEC. 31 04 A.M. PST

B OCT. 15 07 A.M. PST B OCT. 15 11 A.M. PST B NOV. 11 01 A.M. PST B NOV. 22 03 P.M. PST B NOV. 30 08 A.M. PST G DEC.

G NOV. 30 11 A.M. MST

. NOV. 6 06 P.M. EST IV

H OCT. 10 11 A.M. HST H OCT. 11 07 A.M. HST H OCT. 13 01 P.M. HST H OCT. 13 01 P.M. HST IV H OCT. 15 05 A.M. HST H OCT. 20 11 P.M. HST H OCT. 28 12 P.M. HST IV H OCT. 28 04 P.M. HST H NOV. H NOV. H NOV. 10 08 P.M. HST H NOV. 12 03 P.M. HST 18 07 P.M. PST 18 08 P.M. PST 19 09 A.M. PST 19 10 A.M. PST 19 10 P.M. PST 19 10 P.M. PST 20 01 P.M. PST 21 12 P.M. PST 22 11 A.M. PST 24 07 P.M. PST 24 08 P.M. PST 28 08 A.M. PST DEC.

DEC. 14 00 A.M. PST 14 07 P.M. PST 15 04 A.M. PST

19 08 P.M. PST 25 02 A.M. PST 28 OS P.M. PST 28 10 P.M. PST 0 06 P.M. PST 1 03 P.M. PST 6 02 A.M. PST 6 03 A.M. PST 8 07 A.M. PST 9 08 A.M. PST

2 10 P.M. PST

4 04 P.M. HST 7 12 P.M. HST

NOV. 15 NOV. 16 NOV. 17 NOV. 22 NOV. 22 NOV. 23 NOV. 28 NOV. 28 NOV. 29 NOV. 29 NOV. 29 DEC. DEC. DEC. DEC. 13 DEC. 14 DEC. 21 DEC. 22 DEC. 27 DEC. 28 DEC. 28 DEC. 29

OCT. 24 OCT. 29 OCT. 29 NOV. 20 NOV. 30 NOV. 30 DEC. DEC. DEC. 12 DEC. 20

DEC.

OCT. OCT. 16 OCT. 21 NOV. NOV. 10 NOV. 12

OCT. 10 NOV. NOV. 18 NOV. 29 DEC. DEC. 16 Table I.--Summary of U.S. earthquakes for October-December 1978-Continued

06 13 53.8 15 25 00.2 19 00 oo.o 08 34 06.9 17 07 29.8 15 30 00.2 19.42 N. 155.41 w. 10 19.40 N. 155.42 w. 11 20.42 N. 154.65 w. 13 19.21 N. 155.46 w. 19.35 N. 155.05 w. 19.23 N. 155.55 w. 11 19.34 N. 155.20W. 10 19.31 No 155.22 w. 10 19.65 N. 156.01 w. 19.37 N. 155.45 w. 11 19.66 No 19.35 N. 155.28W. 29 19.35 N. 155.01 w. 10 19.33 N. 155.19 w. 10 19.36 N. 155.08 w. 19.32 N. 155. 22 w. 10 19.33 No 155.22W. 10 19.46 N. 155.39 w. 19.33 N. 155.22 w. 10 19.25 No 155.10 w. 47 19.26 N. 155.25 w. 10 19.83 N. 156.30 w.

42.55 N. 44.96 N. 114.27 w. 44.92 N. 44.00 No 114.41 w. 42.11 N. 112.49 w. 42.11 No 112.55 w. 42.10 No 112.48W. 42.10 N. 112.54 w. 43.99 N. 114.41 l-1. 42.12 N. 112.49 w.

31.95 N.

46.62 No 112.13 w. 47.09 N. 113.16 w. 46.97 N. 113.25W. 44.75 N. 111.23 w. 47.01 No 113. 33 w. 46.50 N. 112. 70 '{.].

39.43 N. 119.64 w. 37.29 N. 116.30W. 37.13 No 116.08 w. 37.28 N. 116.51 \IJ. 37.03 N. 37.27 No 116.41 w. HAWAII--Continued

156.02W.

111.84 w. 114.35 w.

ILLINOIS 88.36 w. 25

MISSISSIPPI 88.48 w.

116.03 w.

------------------ intensity source -------------------

3. 3H
4. 3H
5. 2H
6. 3H

3.5H 3.2H 3.4H 3.4H 3.8H 3.6H 4.1H 3.5H 3.3H 4.0H 3.1H 3.0H 3.1H

3. 3G
4. 2G
5. 7U
6. 5G
7. SG
8. 7G
9. 5G
10. 3B

S. 2B 3.3G 3.8B S.SB H NOV. 15 03 A.M. HST H NOV. 15 04 P.M. HST H NOV. 16 11 P.M. HST H NOV. 22 08 A.M. HST III H NOV. 22 01 P.M. HST IV H NOV. 23 03 A.M. HST H NOV. 27 04 P.M. HST III H NOV. 28 01 A.M. HST III H NOV. 28 09 P.M. HST H NOV. 28 10 P.M. HST III H NOV. 29 11 A.M. HST III H NOV. 30 03 P.M. HST H NOV. 30 04 P.M. HST III H DEC. IV H DEC. 12 06 P.M. HST IV H DEC. 14 04 A.M. HST H DEC. 21 01 P.M. HST H DEC. 21 04 P.M. HST IV H DEC. 27 00 A.M. HST H DEC. 28 03 A.M. HST H DEC. 28 08 A.M. HST H DEC. 28 02 P.M. HST

u OCT. 24 01 P.M. MST v G OCT. 29 05 A.M. PST G OCT. 29 09 A.M. PST IV G NOV. 20 06 A.M. PST

v

u NOV. 29 11 P.M. MST II u NOV. 30 04 A.M. MST u DEC. u DEC. G DEC. 12 00 A.M. PST IV u DEC. 20 06 A.M. MST

v

s DEC.

v G DEC. 10 08 P.M. CST

IV G OCT. II G OCT. 15 06 P.M. MST III G OCT. 21 OS A.M. MST IV G NOV. IV G NOV. 10 02 A.M. MST G NOV. 11 OS P.M. MST

G OCT.

E NOV.

E NOV. 18 11 A.M. PST G NOV. 29 00 A.M. PST G DEC. E DEC. 16 07 A.M. PST 5 11 A.U. HST

5 04 A.M. MST 5 04 A.M. MST

4 07 P.M. CST

7 OS A.M. MST

4 08 A.M. MST

9 10 P.M. PST 2 07 A.M. PST

1 09 A.M. PST

OCT. OCT. DEC.

OCT.

OCT. 14 DEC. DEC. DEC. 10

OCT. OCT. OCT. 12 NOV. 11

11 December (G) Alabama-Hississippi border area Origin time:

See Mississippi listing.

4 October (G) Andreanof Islands, Aleutian

Origin time:

Epicenter:

Depth:

Magnitude:

Intensity IV:

Islands 43.45 N. 44.11 N. 44.56 N.

39.97 N.

38.!9 N. 112.35 w.

38.66 N. 112.53 w.

38.65 N. 112.52 w.

40.81 N. 111.57 w.

47. 58 N. 121.85 W. 20
48. 74 N. 110.78 w. 44.71 N. 110.80 w. YELLOWSTONE NAT. PARK • 44.39 N. 110.25 w.

18 53 00.1 51.81 N., 177.05 W. 58 km 4.5 mb Adak Island (M).

OREGON--OFF THE COAST 126.71 w. 15 128.54 w. 15 129.59 w. 15

WYOMING 4 October. (G) Near Origin time: Epicenter: Depth: Magnitude: Intensity III:

6 October (G) Southern Alaska Origin time: Epicenter: Depth: Magnitude: Intensity III: Willow-Hatcher Pass area

Intensity II:

Origin time:

Epicenter:

Depth:

Magnitude:

Eighty-six questionnaires were completed for this earthquake from the Naval Air 3.0L

2.9U 3.3U 3.3U 2.8U

3. 6G

... IV . OCT. 12 A.M. MST 3.2G

Alaska--Continued v G OCT.

v

Islands, Aleutian Islands 19 55 17.5 50.93 N., 173'.53 E. Normal. 5.3 mb, 5.0 MS Shemya Island (M).

OS 54 05.2 61.93 N., 150.67 W. 6 km 4.6 ML(M)

Palmer (M), Wasilla (M).

Islands 20 so. 48.7 51.72 N., 176.94 W. 61 km 5.0 mb G OCT. G OCT.

u OCT. A.M. MST u DEC. u DEC. u DEC. A.M. MST

W DEC. 30 07 P.M. PST

G OCT. G OCT. G NOV. 11 01 P.M. MST 4 04 P.M. PST 17 05 P.M. PST 18 04 A.M. PST

6 02 P.M. EST

9 07 A.M. MST 9 04 P.M. MST

2 06 A.M. MST 2 04 P.M. MST 27 October {G) Southern Alaska Origin time: Epicenter: Depth: Magnitude: Intensity II:

30 October {G) Southern Alaska Origin time: Epicenter: Depth: Magnitude: Intensity III: Anchorage area {M).

31 October {G) Southern Alaska Origin time: Epicenter: Depth: Magnitude: Intensity II:

14 November {G) Central Alaska Origin time: Epicenter: Depth: Magnitude: Intensity II:

19 November (G) Near Origin time: Epicenter: Depth: Magnitude: Intensity V:

24 November (G) Southern Alaska Origin time: Epicenter: Depth: Magnitude: Intensity II:

24 November (G) Southern Alaska Origin time: Epicenter: Depth: Magnitude: Intensity II:

2 December (G) Kenai Peninsula Origin time: Epicenter: Depth: Magnitude: Intensity V: Alaska--Continued

Station, Adak Island. The evaluated intensities from the information on these questionnaires ranged from intensity IV to VI. 04 29 31.5 62.20 N., 151.05 w. 102 km None computed. Talkeetna.

60.96 N•• 150.32 w. 48 km 3.3 mb

12 28 30.1 61.91 N•• 14f.57 w. Normal. 3.5 mb, 3.4 ML{M) Palmer area (M).

22 27 45.7 64.54 N., 147.03 w. 25 km 3.7 ML Fairbanks area (M).

Islands, Aleutian Islands 19 42 35.7 52.70 N., 172.48 E. 47 km 5.3 mb{G), 5.2 MS(G) Shemya Island.

00 28 12.8 62.03 N., 150.52 w. 74 km 4.5 mb Palmer (M), Talkeetna (M).

08 50 45.4 61.99 N., 150.51 w.

3.2 mb Willow (M).

21 57 20.0 59.69 N., 151.66 w. 13 km 3.7 ML(M) Homer.

3 December (G) Central Alaska Origin time : Epicenter: Depth:

Intensity IV:

Intensity III: Anchorage (M), Palmer (M),

Intensity II:

4 December (G) Central Alaska Origin time: Epicenter: Depth: Magnitude: Intensity II:

8 December (G) Northern Alaska Origin time: Epicenter: Depth: Magnitude: Intensity II:

15 December (G) Rat Islands, Aleutian Islands Origin time: Epicenter: Depth: Magnitude: Intensity V:

Intensity IV:

17 December (G) Central Alaska Origin time: Epicenter: Depth: Magnitude: In tensity IV:

22 December (G) Alaska Peninsula Origin time: Epicenter: Depth: Magnitude: Intensity IV:

24 December (G) Central Alaska Origin time: Epicenter: Depth: Magnitude:

Willow (M).

and small objects shifted).

banks.

awakened and the control tower was evacuated). 19 3 9 31. 2 62.31 N., 149.75 w. 74 km 4.7 mb Chugiak, Talkeetna (M).

Wasilla.

12 11 06.4 65.04 N., 147.51 w. 24 km 3.3 ML (M) Fairbanks (M).

10 01 51.5 68.33 N., 145.17 W. Normal. 4.0 ML(H) Fairbanks (M).

08 30 34.7 52.11 N., 175.23 E. 47 km 5.6 mb, 5.6 MS, 5.4 MS{B) Shemya AFB (light furniture

Attu.

13 15 26.0 63.95 N., 147.42 W. 22 km 4.8 mb, 4.6 ML(M) Clear AFB {M), Ester, Fair-

03 25 29.9 55.57 N., 160.37 w. 12 km 4.5 mb, 4.2 ML(M) Sand Point (M).

13 13 08.1 63.56 N., 157.59 w. Normal. 5.0 mb(G), 4.4 MS(G), 5.3 ML(M) Galena Airport {people were

34o ~------~--------L-~O~oBi~g~B~e=ar~Cirty~-----r---r--

FIGURE 10.--Isoseismal map for the Owens Valley earthquake of 4 October 1978, 16 42 48.6 UTC.

Table 2.-Summary of macroseismic data for U.S. earthquakes, Table 2.--Summary of macroseismic data for U.S. earthquakes,

Reno o e

Roman numerals represent Modified Mercalli intensities between isoseismals; Arabic numerals are used to represent these intensities at specific sites.

El Portal, Farmersville, Farmington, Firebaugh, Fish Camp, Five Points, Fresno, Glencoe, Glennville, Goshen, Groveland, Hanford, Hathaway Pines, Helm, Holt, Hornitos, Hume, Independence, Ivanhoe, Keeler, Kerman, Kettleman City, Kingsburg, Kings Canyon,

NEVADA

Lake Isabella, Le Grand, Lemoncove, Lemoore, Lindsay, Little Lake, London, Lone Pine, Long Barn, Mariposa, Merced, Midpines, Miramonte, Murphys, North Fork, Oakhurst, Olancha, Orange Cove, Orosi, Pacific House, Piedra, Pinedale, Pine Grove, Pioneer, Pix-

6 Felt at intensity 6 o Not felt

Nevada--Dyer, Eureka, Goldfield, Mina,

Intensity III:

Nevada--Panaca, Schurz.

In tensity II:

Nevada--Beatty.

5 October (B) Northern California Origin time: Epicenter: Depth: Magnitude:

Intensity IV:

6 October (B) Northern California Origin time: Epicenter: Depth: Magnitude:

Felt in the coastal areas from Arcata to Cape Mendocino (B).

In tensity V:

Intensity IV:

ley, Poplar, Porterville, Posey, Prather, Rail Road Flat, Raisin, Redtop, River Pines, Sacramento, Salida, Selma, Sequoia National Park, Snelling, Soulsbyville, South Dos Palos, Springville, Squaw Valley, Standard, Stockton, Stratford, Strathmore, Tehachapi (press report), Terra Bella, Three Rivers, Tipton, Tollhouse, Tranquillity, Traver, Tulare, Tuolumne, Twain Harte, Vallecito, Visalia, Volcano, Wawona, Weldon, Wilseyville, Wishon, Woodlake, Woodville, Woody, Yosemite lodge, Yosemite National Park.

Sparks, Yerington.

Blairsden, Bodfish, Calwa, Chualar, Delhi, Diablo, Dinuba, Ducor, Earlimart, Fowler, Huron, ~amestown, lamont, laton, Liberty Farms, lost Hills, Madera, Newman, O'Neals, Pollock Pines, Pond, Reedley, Richvale, Rio Vista, Sanger, Santa Rita Park, Wilton.

Atwater, Cholame, Coalinga (press report), Deep Springs (press report), Elk Grove, Exeter, Green Valley lake, lebec, Mi-Wuk Village, Moccasin, Mono (press report), Parlier, Richgrove, San Joaquin, Stevinson, Tupman, Valley Home. 09 56 40.4 41.46 N., 121.88 w. 2 km 4.2 mb(G), 3.8 MS(G), 4.1 Ml (B) McCloud.

21 26 34.4 40.38 N., 124.27 w. 20 km 4.8 mb(G), 4.2 MS(G), 4.6 Ml

Miranda. Bayside, Bridgeville, Intensity III: Garberville (press

9 October (B) Central California Origin time: Epicenter: Depth: Magnitude: Intensity III: Chualar and San ~enito

10 October (B) Central California Origin time: Epicenter: Depth: Magnitude: Intensity II:

10 October (B) California Origin time: Epicenter: Depth: Magnitude: Intensity II:

10 October (P) Central California Origin time: Epicenter: Depth: Magnitude: Intensity II:

16 October (B) Northern California Origin time: Epicenter: Depth: Magnitude: Intensity III: Rio Dell.

19 October (P) Southern California Origin time: Epicenter: Depth: Magnitude: Intensity II:

26 October (P) Owens Valley area Origin time: Epicenter: Depth: Magnitude: Intensity IV: Intensity II:

27 October (B) Central California Origin time: Epicenter: Depth:

Eureka, Fortuna, Rio Dell, Weott.

report), Redway (press report).

County (B).

20 49 45.8 36.68 N., 121.37 w.

01 38 36.9 36.61 N., 121.28 w.

3.8 Ml San Benito County (B).

04 28 51.8 JH.80 N., 119.82 w. 10 km 3.1 ML(B) Markleeville area (B).

09 06 57.4 35.08 N., 117.50 v1.

3.6 ML Edwards AFB (p).

02 18 07.0 40.46 N., 124.30 w. 20 km 3.7 Ml(B)

09 10 24.5 33.83 N., 118.07 w. 5 km 1.9 Ml Lakewood (P).

19 00 41.3 37.52 N., 118.58 w. 9 km 4.0 ML(B), 3.9 Ml(P) Mariposa. Yosemite (B).

12 00 22.2 37 • 26 N., 121.64 w. 4 km Table 2.-Summary of macroseismic data for U.S. earthquakes, Table 2.-Summary of macroseismic data for U.S. earthquakes,

Magnitude:

Intensity II:

29 October (B) Northern California Origin time: Epicenter: Depth: Magnitude: Intensity IV:

29 October (P) Southern California Origin time: Epicenter: Depth: Magnitude:

Felt in the southwest Los Angeles Basin

Intensity IV:

29 October (P) Southern California Origin time: Epicenter: Depth: Magnitude: Intensity IV: Intensity II:

30 October (B) Central California Origin time: Epicenter: Depth: Magnitude: Intensity II:

November (P) Imperial Valley Origin time: Epicenter: Depth:

Intensity II:

6 November (P) Owens Valley area Origin time: Epicenter: Depth: Magnitude: Intensity II:

11 November (P) Southern California Origin time: Epicenter: Depth: Magnitude:

report), Hawthorne, Inglewood (press report), Los Angeles, Manhattan Beach (press report), Torrance (press report). 3.1 ML San Jose (B).

06 50 49.1 40.30 N., 124.73 W. 20 km 3.8 ML Rio Dell.

08 09 59.5 33.92 N., 118.30 w. 5 km 2.9 ML

22 16 09.0 34.32 N., ll8.63 w. 3 km 3.6 ML(P) Tarzana. Canoga Park, Malibu (P).

16 OS 04.6 36.67 N., 121.36 W. 6 km 3.2 ML Hollister (B).

06 42 22.6 32.75 N., 115.52 H. 6 km 2.8 ML El Centro (P).

16 22 25.0 37.53 N., 118.62 W. 9 km 3.4 ML(B), 3.5 ML Bishop (B).

04 24 04.6 33.63 N., 117.88 W. 3 km 2.7 ML

Intensity V:

Intensity IV:

November (B) Northern California Origin time: Epicenter: Depth: Magnitude: Intensity IV:

13 November (P) Southern California Origin time: Epicenter: Depth: Magnitude: Intensity II:

13 November (P) Southern California Origin time: Epicenter: Depth: Magnitude: Intensity II:

16 November (P) Southern California Origin time: Epicenter: Depth: Magnitude: Intensity IV: Intensity II:

19 November (P) Southern California Origin time: Epicenter: Depth: Magnitude: Intensity II:

19 November (P) Southern California Origin time: Epicenter: Depth: Magnitude:

Felt in the Los Angeles area (press

Intensity IV:

Costa Mesa (dishes, pots, and pans crashed to the floor when cupboard doors flew open--press report), Santa Ana Feights (press reports of breakage of stored items when they were lmocked loose from their "moorings").

report), Newport Beach (press report).

(P).

13 07 57.3 39.49 N., 122.95 w. 16 km 3.8 ML Potter Valley, Willits.

16 49 43.1 34.43 N., 119.70 w. 13 km 3.2 ML Goleta, Santa Barbara.

16 50 58.3 34.43 N., 119.70 w. 15 km 3.3 ML Goleta, Santa Barbara.

13 28 46.7 34.15N., 117.60W.

Etiwanda. Claremont (P), Pomona

04 20 05.6 33.85 N., ll8.17 w. 12 km 2.7 ML Lakewood (P), Long Beach

17 40 56.9 33.85 N., 118.18 W. 5 km 3.1 ML(P)

Bellflower, Harbor City, Intensity III: Cypress, Montebello. Intensity II:

19 November (P) Southern California Origin time : Epicenter: Depth: Magnitude:

Felt in the los Angeles area (press

Intensity III: North Long Beach, Watts.

20 November (P) Southern California Origin time: Epicenter: Depth: Magnitude:

Felt in los Angeles, Orange, Riverside,

Intensity VI:

Intensity V:

Intensity IV:

Intensity III: Cypress, long Beach, San

Intensity II:

20 November (P) Southern California Origin time: Epicenter: Depth: Magnitude: Intensity III: Cathedral City, Running

20 November (P) Southern California Origin time: Epicenter: Depth: Magnitude: Intensity II:

lakewood, Long Beach, los Alamitos, Maywood.

Watts (P).

report).

San Bernardino, and San Diego counties.

ter walls cracked and split, hairline cracks in exterior walls, light furniture and small objects shifted, windows cracked).

(small objects fell), Highland (pictures knocked off walls--press report).

El Cajon, Hemet, Landers, Mead Valley, Morongo Valley, Palm Springs, Rancho Mirage, Rialto, Riverside, Running Springs, Sunnymead, Yucaipa.

Bernardino.

Newport Beach (P), Pasadena (P), Twentynine Palms.

Springs. Downey (P), Hawthorne,

18 0 0 16. 4 33.~5 N., 118.17W. 12 km 2.8 ML(P)

06 55 09.4 34.15 N., 116.97 w. 5 km 4.0 mb(G), 4.2 Ml

Anaheim (P), Downey (P),

06 58 45.0 34.15 N., 116.97 w. 6 km 3.5 Ml(P)

21 21 49.1 34.15 N., 116.98 w. 5 km 3.1 ML Big Bear lake (P). 25 November (P) Owens Valley area Origin time: Epicenter: Depth: Magnitude: Intensity II:

25 November (P) Owens Valley area Origin time: Epicenter: Depth: Magnitude: Intensity II:

1 December (P) Southern California Origin time: Epicenter: Depth: Magnitude: Intensity II:

6 December (P) Southern California Origin time: Epicenter: Depth: Magnitude: Intensity III:

6 December (P) Southern California Origin time: Epicenter: Depth: Magnitude: Intensity II:

14 December (P) Southern California Origin time: Epicenter: Depth: Magnitude: Intensity IV:

Intensity III:

29 December (P) Southern California Origin time: Epicenter: Depth: Magnitude: Intensity II:

report).

report).

report).

report).

report).

(P). 03 24 55.3 37.50 N., 118.70 w. 8 km 3.4 ML, 3.5 Ml(B) Bishop (B).

04 06 41.4 37.53 N., 118.68 w. 9 km 3.5 ML, 3.3 Ml(B) Bishop (B).

23 20 46.5 33.93 N., 116.68 w. 5 km 3.6 ML Palm Springs (press

10 03 49.3 34.38 N., 119.75 W. 5 km 3.2 Ml Santa Barbara (press

11 21 48.7 34.37 N., 119.75 w. 5 km 2.2 ML Santa Barbara (press

08 55 20.4 34.40 N., 119.50 W.

3.1 ML Carpenteria (press

06 30 30.4 33.93 N., 118.33 w. 3 km 2.3 ML Hawthorne (P), Inglewood 6 November Origin time: Epicenter: Depth: Magnitude:

The epicenter given is a macroseismic

Intensity IV:

The places shown below followed by (H) designate intensity values assigned by the Hawaiian Volcano Observatory.

15 October (H) Island of Hawaii Origin time: Epicenter: Depth: Magnitude: Intensity IV:

Intensity III: Hilo (H), Kaimu (H).

Intensity II:

28 October (H) Island of Hawaii Origin time: Epicenter: Depth: Magnitude: Intensity IV:

Intensity III:

Intensity II:

22 November (H) Island of Hawaii Origin time: Epicenter: Depth: Magnitude: Intensity III:

location taken from the felt information. The magnitude is estimated ·to be less than 2.0. There were reports of two events, on November 14 at 20 14 UTC and on November 16 at 19 00 UTC; both were reported felt, but neither were recorded on the nearest seismographs and may not have been seismic.

doors rattled and houses shook).

(H), Kalapana (H).

canoes National Park (H).

(H), Hawaii Volcanoes National Park 23 00 30.20 N., 82.65 W. None computed. None computed.

Lake City (press reported

15 35 48.6 19.38 N., 155.07 w.

3.3 ML Hawaiian Paradise Park

Volcano (H), Hawaii Vol-

22 37 33.2 21.56 N., 157.98 W.

4.2 ML Honolulu, Kaaawa, Kapa-Pearl City, Waipahu.

Kaneohe (H).

Waikiki.

23 23 14.8 19.35 N., 155.05 W.

BlackBand Subdivision 23 November (H) Island of Hawaii Origin time: Epicenter: Depth: Magnitude: Intensity IV:

Intensity III: Honaunau (H), Keokea (H).

Intensity II:

28 November (H) Island of Hawaii Origin time: Epicenter: Depth: Magnitude: Intensity III: Ainahou Ranch (H). Intensity II:

29 November (H) Island of Hawaii Origin time: Epicenter: Depth: Magnitude: Intensity III: Kona (H).

29 November (H) Island of Hawaii Origin time: Epicenter: Depth: Magnitude: Intensity III: Kailua-Kona (H), Pahala (H). Intensity II:

1 December (H) Island of Hawaii Origin time: Epicenter: Depth: Magnitude: Intensity III: Ainaloa (ij).

5 December (H) Island of Hawaii Origin time: Epicenter: Depth: Magnitude: Intensity III:

13 December (H) Island of Hawaii Origin time: Epicenter: Depth: Magnitude: Intensity IV: Hawaii--Continued

Estates (H), Naalehu (H), Pahala (H).

Kailua-Kona (H), Kainaliu (H), Keauhou (H), Mauna Loa Observatory (H), Papaikou (H).

Kalapana (H) , (H). 13 16 15.9 19.23 N., 155.54 w. 11 km 4.2 ML Hawaiian Ocean View

Ahualo (H), Hilo (H),

11 31 36.7 19.31 N., 156.22 w. 10 km 3.6 ML

Volcano (H).

07 50 40.3 19.65 N., 156.01 w.

08 42 59.6 19.37 N., 155.45 w.

Volcano Golf Course (H).

01 22 39.4 19.35 N., 155.28 w. 29 km 3.4 ML

21 36 39.7 19.33 N., 155.19 w. 10 km

Ainaloa (H), Hilo (H), Nanawale (H), Volcano

04 44 31.5 19.36 N., 155.08 w.

3.6 ML Glenwood (H), Kalapana Intensity III: Hilo (H).

14 December (H) Island of Hawaii Origin time: Epicenter: Depth: Magnitude: Intensity IV:

Intensity III: Ainaloa (H), Volcano (H).

Intensity II:

27 December (H) Island of Hawaii Origin time: Epicenter: Depth: Magnitude: Intensity IV:

Intensity III: Ahualoa (H), Hawaii Vol-

24 October (U) Southeastern Idaho Origin time: Epicenter: Depth: Magnitude:

Intensity VI:

Intensity V:

Intensity IV:

Intensity II:

29 October (G) Central Idaho Origin time: Epicenter: Depth: Magnitude: Hawaii--Continued

(H), MOuntain View (H), Pahoa (H).

Kurtistown (H), Mountain View (H).

(H), Hawaii Volcanoes National Park

(H), Hilo (H), Kurtistown (H), }buntain View (H), Papaikou (H), Volcano (H).

canoes National Park (H), Hawaiian Beaches (H), Hawaiian Ocean View Estates (H), Honokaa (H), Kau (H), Kona

Idaho--Thatcher (cracked plaster, cracked cement foundation).

Idaho--Lava Hot Springs (furniture shifted; windows, doors, and dishes rattled; felt by many).

Idaho--Aberdeen, Arimo, Bancroft, Downey, Grace, Inkom, McCammon, Pocatello, Swanlake.

Idaho--Franklin. Utah--Plymouth. 14 12 44.9 19.32 N., 155.22 w. 10 km 4.1 ML Glenwood (H), Hilo (H),

10 40 55.7 19.33 N., 155.22 w. 10 km 4.0 ML Ainaloa (H), Glenwood

20 30 59.3 42.55 N., 111.84 w.

4.2 mb(G), 4.3 ML(G), 4.1 ML

13 46 44.5 44.96 N., 114-27 w. 5 km 4.2 mb, 5.0 ML, 5.0 ML(D)

This earthquake was felt over an area of

Intensity V:

Intensity IV:

Intensity III:

Intensity II:

20 November (G) Central Idaho Origin time: Epicenter: Depth: Magnitude: Intensity IV:

30 November (U) Southeastern Idaho Origin time: Epicenter: Depth: Magnitude:

This earthquake is located in the

Intensity V:

approximately 25,000 sq km of Idaho and Montana (fig. 11).

Idaho-- Ellis (light furniture and small objects shifted, hanging pictures knocked out of place, felt by all), Lowman (light furniture shifted;

small objects fell; windows, doors, and dishes rattled; awakened and felt by many).

Idaho--carmen, Challis, Clayton, Cobalt, Hailey, Lemhi, Northfork, Salmon, Shoup, Sweet, Tendoy.

Idaho--Go! den. Montana--Jackson.

Idaho--Garden Valley, Leadore.

Pocatello Valley of Idaho in the same area as the ~~rch 27, 1975 intensity VIII event of magnitudes 6.1 mb(G), 6.0 MS(G), and 6.1 ML(G). It was felt over an area of approximately 18,000 sq km of Idaho and Utah (fig. 12).

Utah--Snowville (water in small containers spilled; small objects shifted; windows, doors, and dishes rattled; felt by all).

Idaho--Arimo, Clifton, Dayton, Elba, Franklin, Holbrook, Malad City, Malta, Naf, Pocatello, Stone, Swanlake, Weston. Utah--Bear River City, Cache Junction, Clarkston, Corinne, Cornish, Fielding, Garland (press report), Honeyville, Howell, Huntsville, Lewiston, Newton, Plymouth, Providence, Rich-14 25 51.8 44.00 N., 114-41 w. 5 km 3.2 ML, 3.7 ML(D) Clayton.

06 53 40.1 42.11 N., 112.49 W. 4 km 4.6 mb(G), 4.7 ML FIGURE 11.--Isoseismal map for the central

Intensity III:

Intensity II:

30 November (U) Southeastern Idaho Origin time: Epicenter: Depth: Magnitude: Intensity II:

20 December (U) Southeastern Idaho Origin time: Epicenter: Depth: Magnitude:

Intensity IV:

Intensity III:

Intensity II: Idaho earthquake of 29 October 1978, 13 46 44.5 UTC. Roman numerals represent Modified Mercalli intensities between isoseismals; Arabic numerals are used to represent these intensities at specific sites.

mend, Riverside, Tremonton.

Utah--Kelton.

Idaho--American Falls, Inkom. Utah--Wellsville.

Idaho--Holbrook, Malad City, Stone, Swanlake. Utah--clarkston, Lewiston, North Ogden, Portage, Riverside, Snowville.

Utah--Garland.

Idaho--Inkom. Utah--Fielding, Trenton. FIGlffiE 12.--Isoseismal map for the southeastern

5 December (S) Southern Illinois

11 55 09.3 42.11 N., 112.55 w. 4 km 3.5 ML Stone.

13 46 22.6 42.12 N., 112.49 W. 6 km 3.9 ML NEVADA

Origin time: Epicenter: Depth: Magnitude:

This earthquake was felt over an area of approximately 11,5000 sq km of Illinois and Indiana (fig. 13).

Intensity V:

Illinois-- Idaho earthquake of 30 November 1978, 06 53 40.1 UTC. Roman numerals represent Modified Mercalli intensities between isoseismals; Arabic numerals are used to represent these intensities at specific sites.

Barnhill (one report of cracked plaster; hanging pictures swung; buildings creaked and trembled; windows, doors, and dishes rattled; felt by many) Newton (light furniture and small objects shifted; hanging pictures swung; windows, doors, and dishes rattled; felt by all) West Liberty (light furniture shifted; small objects fell; windows, doors, and dishes rattled; felt by many) Willow Hill (few windows cracked; 01 48 01.3 38.62 N., 88.36 w. 25 km 3.5 mbLg FIGURE 13.--Isoseismal map for the southern Il-

Intensity IV:

Intensity Ill:

linois earthquake of 5 December 1978, 01 48 01.3 UTC. Roman numerals represent Modified Mercalli intensities between isoseismals; Arabic numerals are used to represent these intensities at specific sites.

small objects shifted; hanging pictures swung; windows, doors, and dishes rattled; felt by many).

Illinois--Alma, Annapolis, Belle Rive, Bluford, Bone Gap, Bridgeport, Browns, Carmi, Cisne, Coulterville, Dieterich, Dundas, Edgewood, Effingham, Fairfield, Farina, Flora, Geff, Golden Gate, Grayville, Hoyleton, Ingraham, lola, Iuka, Johnsonville, Kell, Kinmundy, Lancaster, Louisville, Mason, Mount Erie, Noble, Olney, Opdyke, Parkersburg, Patoka, Rinard, Saint Peter, Sainte Marie, Salem, Sims, Robinson, Texico, West Union, Xenia, Yale. Indiana--Buffaloville, Owensville.

Illinois--Albion, Bellmont, Bonnie, Sailor Springs, Sullivan.

Illinois--Bible Grove, Buckner, Fillmore, Flat Rock, Glen Carbon, Irving, Keenes, Lawrenceville, Oakdale, Shobonier, Teutopolis, West Salem, West York. Indiana--Fairbanks, Stewartsville, Switz City.

5 December (S) Southern Illinois

11 December (G) Alabama-Mississippi border area

7 October (G) Western Montana

16 October (G) Western Montana

21 October (G) Western Montana

29 October (G) Central Idaho

4 November (G) Hebgen Lake region Origin time:

See Illinois listing.

Origin time: Epicenter: Depth: Magnitude: Intensity V:

Alabama-- Gilbertown (light furniture shifted, small objects fell), Melvin (small objects broken). Intensity II:

Mississippi--carmichael.

Origin time: Epicenter: Depth: Magnitude: Intensity IV:

Origin time: Epicenter: Depth: Magnitude : Intensity II:

phone report).

Origin time: Epicenter: Depth: Magnitude: Intensity III: Ovando.

Origin time:

See Idaho listing.

Origin time: Epicenter: Depth: Magnitude: Intensity III:

Wyoming--old Faithful, Yellowstone National Park. Indiana

02 06 48.2 31.95 N., 88.48 w. 5 km 3.5 mbLg

12 35 55.3 46.62 N., 112.13 W. 5 km 2.7 ML(G), 2.9 ML(D) East Helena, Helena.

01 15 35.3 47.09 N., 113.16 w. 5 km

2. 9 ML (D) , 3. 4 ML Missoula, Potomac (tele-

12 28 15.3 46.97 N., 113.25 W. 5 km 3.5 ML

15 49 43.8 44.75 N., 111.23 w. 5 km 3.5 ML(G) 10 November (G) Western Montana Origin time: Epicenter: Depth: Magnitude: Intensity IV: Intensity III:

4 October (P) Owens Valley area Origin time:

See California listing.

2 November (E) Southern Nevada Origin time: Epicenter: Depth: Magnitude:

Nevada Test Site explosion "EMMENTHAL" at

18 November (E) Southern Nevada Origin time: Epicenter: Depth: Magnitude:

Nevada Test Site explosion "QUARGEL" at

16 December (E) Southern Nevada Origin time: Epicenter: Depth: Magnitude:

Nevada Test Site explosion "FARM" at 37°

6 October (G) Western Pennsylvania Origin time: Epicenter: Depth: Magnitude: Montana--Continued

37°17'16.60" N., 116°17'50.98" w., surface elevation 2131 m, depth of burial 576 m.

37°07'36:73" N., 116°05'01.94" w., surface elevation 1302 m, depth of burial 542 m.

16'24.22" N., 116°24'36.99" w., surface elevation 2006 m, depth of burial 689 m.

Pennsylvania 09 53 45.6 47.01 N., 113.33 W. 5 km 4.3 ML Seeley Lake Ovando.

15 25 00.169 37.29 N., 116.30 w. 0 km 4.2 mh(G), 4.3 ML(B)

19 00 00.166 37.13 N., 116.08 w. 0 km 5.1 mh(G), 5.2 ML(B)

15 30 00.158 37.27 N., 116.41 w. 0 km 5.5 mb(B), 5.5 ML(B)

19 25 41.6 39.97 N., 76.51 w. 5 km 2.8 mbLg, 3.0 mhLg(L)

According to the press, this earthquake

Intensity V:

Intensity IV:

Intensity III: Intercourse, Millers-

Intensity II:

24 October (U) Southeastern Idaho Origin time:

See Idaho listing.

30 November (U) Southeastern Idaho Origin time:

See Idaho listing.

20 December (U) Southeastern Idaho Origin time:

See Idaho listing.

31 December (W) Seattle area Origin time: Epicenter: Depth: Magnitude:

This earthquake was felt over an area of Pennsylvania--Continued

shook buildings throughout Lancaster and its suburbs. Buildings trembled briefly, a loud noise (described variously as a boom, roar, or vehicle collision) could be heard, and some startled people ran outside.

cracked windows), Mount Joy (unconfirmed report of cracked plaster).

Hand, Brogue, Brownstown, Conestoga, Delta, East Petersburg, Lancaster, Landisville, Leola, Mountville, New Holland, Peach Bottom, Penryn, Quarryville, Refton, Ronks, Smoketown, Talmage, Washington Boro, Willow Street, Wrightsville.

ville, Pequea, Strasburg.

Manheim, Marticville (press report), Millersville (press report).

approximately 8,500 sq km of Washington and British Columbia (fig. 14).

Akron, Bausman, Bird in

03 23 46.7 47.58 N., 121.85 w. 20 km 4.0 ML(G)

Intensity V:

Intensity IV:

Intensity III:

Intensity II:

2 October (G) Yellowstone National Park Origin time: Epicenter: Depth: Magnitude:

This earthquake and the one at 23 55 42.6 are two of nine which were felt in the park area on October 2 in a 12-hour period from 11 59 to 23 55 UTC. The intensity data are from R. A. Hutchinson, Park Geologist (written commun., 1979).

Intensity III:

Intensity II:

2 October (G) Yellowstone National Park Origin time: Epicenter: Depth: Magnitude:

Granite Falls (light furniture and small objects shifted, felt by many), North Seattle (press reported small cracks in walls and ceiling of one home).

City, Freeland, Gold Bar, Grotto, Hobart, Index, Kenmore (press report), Kingston, lake City (press report), lake Forest Park (press report), lake Stevens, Magnolia (press report), Monroe, Mukilteo, Northbend, Port Orchard, Preston, Ravensdale, Renton, Seattle, Seattle-Tacoma Airport (furniture shifted on the fifth floor), Snoqualmie, Sultan, Woodinville.

ton, Everett, Kirkland, Medina, Mountlake Terrace, Port Townsend, Shaw Island, Startup.

report).

Edmonds, North Bend, Retsil, Skykomish, Tacoma.

Wyoming FIGURE 14.--Isoseismal map for the Seattle

FIGURE 14.--Isoseismal map for the Seattle earthquake of 31 December 1978, 03 23 46.7 UTe. Roman numerals represent Modified Mercalli intensities between represent these intensities at specific sites.

13 59 10. 7 October 44.74 N., 110.78 w. 5 km 3.5 ML, 3.5 Ml(D)

Madison Junction. 4 November (G) Hebgen Lake region Old Faithful.

23 55 42.6 44.71 N., 110.80 w. 11 November (G) Yellowstone National Park

3.6 Ml, 3.7 Ml(D) Intensity IV: Intensity III: Intensity II:

Origin time: Epicenter: Depth: Magnitude:

This is the first of about 35 earthquakes

Intensity IV:

Origin time:

See Montana listing.

Origin time: Epicenter: earthquake of 31 December 1978, 03 23 46.7 Modified Mercalli intensities between isoseismals; Arabic numerals are used to represent these intensities at specific sites.

occurring in a 90-minute period which were felt at Grant Village (R. A. Hutchinson, written commun., 1979).

·uNi~~fEs-··;~-P~~~~---

Madison J~ction, Norris.

Canyon Village.

Old Faithful.

Yellowstone National Park 13 52 Not located. None computed. None computed.

Grant Village.

20 46 20.8 44.39 N., 110.25 w. Wyoming--continued

Depth:

Magnitude:

Intensity II:

ACKNOWLEDGMENTS

Listed below are the collaborators who furnished data to the National Earthquake Information Service for use in this Circular:

ALASKA:

CALIFORNIA:

HAWAII:

MISSOURI:

MONTANA: Staff of National Oceanic and

Clarence R. Allen, Seismological

Bruce A. Bolt, Seismograph Sta-

Gary s. Fuis, U.S. Geological

Robert Y. Koyanagi, U.S. Geolog-

Otto Nuttli, Department of Geol-

Anthony Qamar, University of 6 km 3.2 ML, 3.9 ML(D) Lake.

Atmospheric Administration, Alaska Tsunami Warning Center, Palmer.

Laboratory, California Institute of Technology, Pasadena.

tion, University of California, Berkeley.

Survey, Pasadena.

ical Survey, Hawaiian Volcano Observatory, Hawaii National Park.

ogy and Geophysics, St. Louis University, St. Louis.

Montana, Missoula. UTAH:

WASHINGTON:

WYOMING:

Acknowledgment is also given to Paula Smith for aid in editing the manuscript, drafting the isoseismal maps, and preparing the computerized manuscript.

REFERENCES CITED

Bath, Markus, 1966, Earthquake energy and magnitude, in Physics and chemistry of the Earth, Volume 7: Oxford and New York, Pergamon Press, p. 115-165.

Gutenberg, B. and Richter, c. F., 1956, Magnitude and energy of earthquakes: Annali di Geofisica, v. 9, no. 1, p. 1-15.

Nuttli, 0. W., 1973, Seismic wave attenuation and magnitude relations for eastern North America: Journal of Geophysical Research, v. 78, no. 5, p. 876-885.

Porcella, R. L., 1979, Recent strong-motion records, Report, September-December 1978, u.s. Geological Survey Circular 785-C, p. 1-9.

Richter, c. F., 1958, Elementary seismology: San Francisco, Calif., W. H. Freeman and Co., Inc., 768 p.

Wood, H. 0., and Neumann, F., 1931, Modified Mercalli Intensity Scale of 1931: Seismological Society of America Bulletin, v. 21, no. 4, p. 277-283.

Department of Geological and Geophysical Sciences, Universityof Utah, Salt Lake City.

Robert s. Crosson, Geophysi~s Program, University of Washington, Seattle.

R. A. Hutchinson, National Park Service, Yellowstone National Park.

Where this page came from

This page was imported from U.S. Geological Survey. Published by the U.S. Geological Survey and, as a work of the United States government, in the public domain.

Nobody has written it yet — it is the source material at a new address, which is why search engines are asked to skip it and why no one earns from it. It is up for grabs: take it on, and it is yours to rewrite and to earn from.