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
1998 JAN 01 20 26 54.20 POTTAWATOMIEOK 2.2 2.1 2.0 35.1420 -96.9810 10.30 OC
1998 JAN 06 10 16 36.20 CUSTER OK 2.0 1.9 2.4 35.6430 -98.9990 0.00R OC
1998 JAN 21 01 35 54.40 MC CLAIN OK 1.4 1.6 1.7 34.9320 -97.5990 5.00 OC
1998 JAN 26 06 57 31.79 KAY OK 1.6 1.8 36.9030 -97.2900 5.00R OC
1998 FEB 15 08 53 42.95 WASHITA OK 2.1 35.1910 -99.2090 5.00R OC
1998 FEB 18 10 59 42.22 ATOKA OK 1.1 1.1 34.5830 -96.0630 5.00R OC
1998 MAR 02 09 09 37.93 GARVIN OK 1.7 1.6 1.7 34.6930 -97.5360 3.30 OC
1998 MAR 08 09 28 57.18 PITTSBURG OK 1.4 1.5 34.5980 -95.8500 5.00R OC
1998 MAR 18 15 46 44.38 GARVIN OK 2.1 1.8 1.7 34.7380 -97.4800 5.00R OC
1998 MAR 18 16 06 34.41 CANADIAN OK 1.6 35.6810 -98.1360 5.00R ON
1998 MAR 18 22 33 22.71 JOHNSTON OK 1.8 34.2340 -96.7670 8.00 OC
1998 MAR 22 02 12 35.81 MC CLAIN OK 2.0 1.8 1.6 34.8930 -97.4780 8.20 OC
1998 MAR 22 12 22 49.98 PONTOTOC OK 1.5 1.2 34.8700 -96.9000 7.20 OC
1998 APR 01 15 55 14.52 MC CLAIN OK 1.8 35.2920 -97.6580 0.20R OC
1998 APR 01 19 50 30.86 CANADIAN OK 1.7 35.5120 -97.8700 5.00R OC
1998 APR 01 23 26 34.59 MC INTOSH OK 1.7 1.6 1.9 35.2390 -95.7010 25.10 OC
1998 APR 02 07 10 32.98 MC CLAIN OK 2.1 34.9230 -97.4760 2.00 OC
1998 APR 08 13 34 17.12 MC CLAIN OK 1.9 34.9570 -97.4780 2.60 OC
1998 APR 28 14 13 01.27 COMANCHE OK 6 4.2 34.7550 -98.4470 5.00R OC
1998 MAY 02 16 12 04.11 GRADY OK 2.3 2.2 1.9 34.8410 -97.7280 7.10 OC
1998 MAY 02 16 55 44.44 GRADY OK 2.2 1.6 1.7 34.8500 -97.6910 3.10 OC
1998 MAY 02 23 56 04.79 ATOKA OK 2.2 1.9 1.9 34.2520 -96.0590 15.20 OC
1998 MAY 04 23 04 53.83 JOHNSTON OK 1.7 34.2430 -96.7910 0.70 OC
1998 JUN 02 06 29 32.27 GARVIN OK 1.7 34.6600 -97.4150 16.30 OC
1998 JUN 12 09 45 59.44 OKLAHOMA OK 1.8 35.5410 -97.4450 5.00R OC
1998 JUN 30 17 10 44.18 GRADY OK 1.8 34.8000 -97.7410 5.00R ON
1998 JUN 30 17 32 07.05 GRADY OK 2.3 1.8 34.8520 -97.7400 6.20 OC
1998 JUL 01 00 48 23.00 GRADY OK F 2.6 2.6 2.3 34.8000 -97.7410 17.70 OC
1998 JUL 01 08 51 37.53 GRADY OK 2.2 34.8190 -97.7210 9.10 OC
1998 JUL 01 17 29 38.86 MC CLAIN OK 2.0 35.0060 -97.5530 5.00R OC
1998 JUL 02 00 46 52.38 GRADY OK 2.0 35.0920 -97.7250 5.00R OC
1998 JUL 02 09 04 20.26 GRADY OK 2.3 34.8550 -97.7260 5.00R OC
1998 JUL 02 21 21 31.53 GRADY OK 2.1 34.8650 -97.7310 2.80 OC
1998 JUL 07 18 44 44.35 GARVIN OK 2.5 34.6290 -97.4300 0.10 OC
1998 JUL 07 23 39 48.98 POTTAWATOMIEOK 1.8 35.4600 -96.9040 5.00R ON
1998 JUL 09 14 45 36.19 GARVIN OK 1.9 34.7910 -97.5720 5.70 OC
1998 JUL 09 16 44 44.02 GARVIN OK 2.1 34.7350 -97.5190 5.00R OC
1998 JUL 09 22 10 27.75 GARVIN OK 2.2 34.6840 -97.4780 5.00R OC
1998 JUL 14 03 26 28.37 COAL OK 2.0 34.4220 -96.3520 5.00R OC
1998 JUL 22 10 04 18.66 GRADY OK 1.8 35.1960 -97.8860 10.20 OC
1998 AUG 03 06 39 10.62 OKMULGEE OK 1.0 0.9 35.6870 -95.9590 5.00R OC
1998 AUG 03 18 09 34.01 GARVIN OK 1.6 1.3 34.6940 -97.4480 5.00R OC
1998 AUG 03 18 41 40.40 GARVIN OK 1.7 1.6 34.6840 -97.4570 5.00R OC
1998 AUG 03 21 15 35.68 GARVIN OK 1.4 34.5770 -97.4930 5.00R ON
1998 AUG 03 22 47 44.36 GARVIN OK 1.7 1.6 34.7130 -97.4370 5.30 OC
1998 AUG 08 03 45 33.37 GRADY OK 1.5 1.9 35.1360 -97.8030 5.00R OC
1998 AUG 13 15 33 51.54 COAL OK 1.9 1.6 1.6 34.6430 -96.3440 5.80 OC
1998 AUG 22 22 05 29.39 GRADY OK 1.6 1.8 34.9240 -97.7180 5.00R OC
1998 AUG 23 05 46 04.29 GRADY OK 1.8 1.6 1.7 35.0220 -97.7650 5.90 OC
1998 AUG 30 06 25 07.76 GARVIN OK 1.5 1.7 1.6 34.8110 -97.4520 0.90R OC
1998 AUG 31 14 01 00.62 GARVIN OK 1.5 1.6 1.5 34.7750 -97.5490 4.30 OC
1998 AUG 31 15 58 44.80 GARVIN OK 1.7 1.7 1.8 34.7940 -97.4840 9.40 OC
1998 AUG 31 21 07 29.69 GARVIN OK 1.6 1.6 34.7590 -97.5380 5.00R OC
1998 SEP 08 17 57 29.12 GRADY OK 1.7 1.8 1.9 34.8240 -97.7730 5.00R OC
1998 SEP 15 22 31 29.11 BRYAN OK 1.9 33.8150 -96.3910 5.00R ON
1998 SEP 16 04 02 06.43 LOGAN OK 1.5 35.7240 -97.4540 5.00R OC
1998 OCT 20 09 48 23.09 ATOKA OK 1.6 34.3860 -95.8370 11.60R OC
1998 OCT 21 15 14 12.00 GARVIN OK 1.5 34.7290 -97.3630 5.00R OC
1998 OCT 21 15 27 50.30 GARVIN OK 1.6 34.7310 -97.3750 1.20R OC
1998 OCT 21 16 29 43.66 GARVIN OK 1.7 34.7320 -97.6020 5.00R OC
1998 OCT 25 03 48 07.71 WAGONER OK 4 1.9 35.9940 -95.4930 16.50 OC
1998 OCT 29 04 15 00.65 GRADY OK 2.0 34.9050 -97.7340 3.50 OC
1998 OCT 29 08 44 19.35 PITTSBURG OK 1.7 34.7170 -96.0740 0.10 OC
1998 OCT 30 17 41 21.42 GRANT OK 4 3.5 36.7710 -97.6230 7.80 OC
1998 NOV 04 02 26 00.69 WASHITA OK 1.9 35.2630 -98.8560 12.80R OC
1998 NOV 14 09 03 35.70 ATOKA OK 1.5 34.3890 -96.2730 1.70 OC
1998 DEC 07 08 58 30.76 JOHNSTON OK 1.6 34.4670 -96.7610 5.00R OC
1998 DEC 15 21 29 29.26 JOHNSTON OK 1.7 34.4570 -96.8490 6.60 OC
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