OKLAHOMA GEOLOGICAL SURVEY OBSERVATORY
OKLAHOMA EARTHQUAKE CATALOG
DATE (UTC) TIME (UTC) COUNTY ST MM MAGNITUDES LATITUDE LONGITUDE DEPTH SM
YYYY MMM DD HH MM SS.SS 3Hz bLg DUR deg (N) deg (W) km
1987 JAN 06 08 00 49.33 GARVIN OK 1.9 34.8150 -97.5760 5.00R ON
1987 JAN 10 03 21 49.95 GARVIN OK 2.7 2.3 2.3 34.5520 -97.4250 5.00R ON
1987 JAN 12 06 09 02.22 GARVIN OK 2.3 2.1 2.0 34.6520 -97.3900 5.00R ON
1987 JAN 16 03 16 25.33 GARVIN OK 1.7 34.8120 -97.5260 5.00R ON
1987 JAN 17 04 13 53.77 MC CLAIN OK 2.3 2.3 2.2 35.0510 -97.5170 5.00R ON
1987 JAN 24 16 08 17.01 KINGFISHER OK 5 3.4 3.1 2.8 35.8280 -98.0970 5.00R ON
1987 JAN 27 06 36 23.00 PAWNEE OK 1.5 36.3390 -96.8850 5.00R ON
1987 JAN 29 00 00 53.22 ATOKA OK 2.5 2.6 2.3 34.3180 -96.2340 5.00R ON
1987 FEB 04 13 45 23.93 GARVIN OK 1.7 34.7570 -97.5580 5.00R ON
1987 FEB 16 00 53 56.45 LINCOLN OK 1.3 35.5740 -96.9600 5.00R ON
1987 FEB 19 05 50 11.47 GARVIN OK 2.0 2.1 2.1 34.8360 -97.4880 5.00R ON
1987 FEB 26 02 04 07.15 SEMINOLE OK 2.0 1.9 2.1 35.3080 -96.6200 5.00R ON
1987 MAR 14 04 43 03.54 HUGHES OK 2.8 2.7 34.7900 -96.3310 5.00R ON
1987 APR 22 01 29 37.34 GARVIN OK 1.5 34.6030 -97.3840 5.00R ON
1987 APR 22 01 40 00.61 GARVIN OK 1.7 2.0 34.8450 -97.5150 5.00R ON
1987 APR 22 03 16 34.91 GARVIN OK 1.9 1.5 1.9 34.7640 -97.5030 5.00R ON
1987 APR 22 06 27 47.84 GARVIN OK 2.4 2.0 2.4 34.5910 -97.3940 5.00R ON
1987 APR 22 08 55 05.60 GARVIN OK 1.9 34.8170 -97.4210 5.00R ON
1987 APR 22 09 35 26.00 GARVIN OK 1.4 34.5910 -97.3940 5.00R ON
1987 APR 22 09 46 51.31 GARVIN OK 2.0 1.4 2.1 34.6920 -97.4370 5.00R ON
1987 APR 22 11 23 09.45 GARVIN OK 1.5 34.5910 -97.3940 5.00R ON
1987 APR 22 13 01 37.89 GARVIN OK 2.3 2.2 2.3 34.7980 -97.4600 5.00R ON
1987 MAY 07 07 33 45.89 OSAGE OK 1.8 1.9 36.6360 -96.9860 4.90 ON
1987 MAY 15 08 29 07.53 CANADIAN OK 2.2 2.1 35.4550 -97.7490 5.00R ON
1987 MAY 17 05 41 04.87 LOGAN OK 2.0 1.7 2.0 35.8900 -97.2360 5.00R ON
1987 MAY 17 15 01 19.86 LOGAN OK 1.6 1.5 35.8780 -97.2640 5.00R ON
1987 MAY 28 19 18 02.67 GARVIN OK 1.8 1.6 34.6830 -97.2760 5.00R ON
1987 JUN 01 17 44 33.18 GARVIN OK 2.8 2.9 2.6 34.6150 -97.3800 5.00R ON
1987 JUN 02 20 25 36.96 PONTOTOC OK 2.2 1.9 34.7070 -96.5550 5.00R ON
1987 JUN 07 07 35 24.33 HASKELL OK 1.5 35.1650 -95.2800 5.00R ON
1987 JUN 18 02 21 56.74 HUGHES OK 1.7 1.9 2.1 35.1180 -96.3470 5.00R ON
1987 JUN 29 07 26 20.96 JOHNSTON OK 2.0 1.5 1.7 34.3350 -96.7260 5.00R ON
1987 JUL 05 22 23 00.58 HASKELL OK 2.2 2.1 35.1880 -95.2890 5.00R ON
1987 JUL 08 03 39 28.79 SEQUOYAH OK 1.5 35.3930 -94.8920 5.00R ON
1987 JUL 12 11 44 50.94 MC CLAIN OK 1.6 34.8860 -97.4210 5.00R ON
1987 JUL 18 15 11 44.75 HUGHES OK 2.2 1.7 34.9270 -96.4370 5.00R ON
1987 AUG 23 17 06 46.49 HUGHES OK 1.8 2.0 34.9450 -96.4210 5.00R ON
1987 AUG 29 09 36 24.62 HUGHES OK 1.6 35.0790 -96.4640 5.00R ON
1987 SEP 03 22 10 12.42 GARVIN OK 2.3 2.1 1.9 34.6230 -97.4010 5.00R ON
1987 SEP 05 03 42 48.46 GARVIN OK 1.4 1.5 34.7790 -97.4750 5.00R ON
1987 SEP 06 10 14 22.26 GARVIN OK 2.0 2.4 2.0 34.6000 -97.4350 5.00R ON
1987 SEP 07 07 13 24.87 GARVIN OK 1.6 34.7590 -97.2730 5.00R ON
1987 SEP 17 12 38 39.34 MC CURTAIN OK 1.3 1.6 34.0140 -94.9450 5.00R ON
1987 SEP 21 13 31 52.93 CLEVELAND OK 1.6 1.7 1.7 35.3100 -97.6080 5.00R ON
1987 SEP 21 13 53 24.77 MC CLAIN OK 2.2 2.2 2.1 35.1190 -97.5360 5.00R ON
1987 SEP 21 13 59 59.47 MC CLAIN OK 1.4 1.9 35.2490 -97.6260 5.00R ON
1987 SEP 21 14 10 09.97 GARVIN OK 1.2 1.6 34.6230 -97.2590 5.00R ON
1987 SEP 21 14 25 07.07 MC CLAIN OK 2.0 1.9 2.0 35.1290 -97.5700 5.00R ON
1987 SEP 21 14 52 45.57 MC CLAIN OK 1.7 1.9 35.1190 -97.5570 5.00R ON
1987 SEP 21 15 08 08.37 MC CLAIN OK 1.8 2.0 2.0 35.1780 -97.5750 5.00R ON
1987 SEP 21 16 00 32.05 MC CLAIN OK 1.3 1.7 35.0250 -97.4930 5.00R ON
1987 SEP 21 16 09 58.21 MC CLAIN OK 1.7 1.9 35.0560 -97.5240 5.00R ON
1987 SEP 22 05 08 36.11 MC CLAIN OK 0.7 35.1550 -97.5520 5.00R ON
1987 SEP 22 05 27 13.27 MC CLAIN OK 1.4 1.8 35.0460 -97.5180 5.00R ON
1987 SEP 22 06 07 35.83 MC CLAIN OK 2.0 2.0 2.3 35.1450 -97.5520 5.00R ON
1987 SEP 22 07 15 37.50 GRADY OK 1.8 1.9 2.1 34.9000 -97.7860 5.00R ON
1987 SEP 24 02 18 47.39 CANADIAN OK 1.4 1.8 35.4060 -97.8150 5.00R ON
1987 OCT 02 05 22 20.74 ROGERS OK 1.2 36.2400 -95.5340 5.00R ON
1987 OCT 05 03 58 47.36 LOGAN OK 2.0 1.7 35.9610 -97.3590 5.00R ON
1987 OCT 23 14 01 49.23 GRADY OK 2.9 2.5 2.4 35.3280 -97.9040 5.00R ON
1987 OCT 29 07 53 33.65 SEMINOLE OK 2.6 1.9 2.5 35.2150 -96.5890 5.00R ON
1987 NOV 13 03 04 56.30 HUGHES OK 1.1 35.2040 -96.3700 5.00R ON
1987 DEC 06 17 43 48.18 GARVIN OK 3.0 2.6 2.5 34.6640 -97.3940 5.00R ON
1987 DEC 07 00 44 00.95 GARVIN OK 2.0 34.5810 -97.3480 5.00R ON
1987 DEC 08 01 42 40.28 KINGFISHER OK 6 3.7 3.6 36.0550 -98.0240 5.00R ON
1987 DEC 08 01 45 47.47 KINGFISHER OK 2.5 36.0560 -98.0300 5.00R ON
1987 DEC 12 03 04 24.67 KINGFISHER OK 1.6 1.9 36.0490 -97.6780 5.00R ON
1987 DEC 16 07 04 58.60 PITTSBURG OK 2.3 2.1 34.8770 -95.5120 5.00R ON
1987 DEC 29 04 39 19.16 GARVIN OK 2.5 2.1 34.6190 -97.4620 5.00R ON
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