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
1882 OCT 22 afternoon   NE I.T.        8     5.0     36.      -95.
1915 NOV 08             ROGERS      OK F     3.9     36.2000  -95.8000        T 
1926 JUN 20 14 20 00.00 SEQUOYAH    OK 5     4.3     35.6000  -94.9000        D 
1929 DEC 28 00 30 00.00 CANADIAN    OK 6     4.0     35.5000  -98.0000        U 
1936 MAR 14 17 20 00.00 MC CURTAIN  OK 5     3.6     34.0000  -95.0000        U 
1937 JUN 08 14 26 00.00 POTTAWATOMIEOK 4     3.6     35.3000  -96.9000        D 
1939 JUN 01 07 30 00.00 HUGHES      OK 4     4.4     35.0000  -96.4000        U 
1942 JUN 12 05 50 00.00 GARFIELD    OK 3     3.7     36.4000  -97.9000        U 
1952 APR 09 16 29 15.00 CANADIAN    OK 8     5.0     35.4000  -97.8000        U 
1952 APR 11 20 30 00.00 CANADIAN    OK 4     3.8     35.4000  -97.8000        U 
1952 APR 16 05 58 00.00 CANADIAN    OK F     3.8     35.4000  -97.8000        U 
1952 APR 16 06 05 00.00 CANADIAN    OK 5     3.8     35.4000  -97.8000        U 
1953 MAR 17 14 25 00.00 CANADIAN    OK 6     3.8     35.4000  -98.0000        U 
1956 APR 02 16 03 18.00 PUSHMATAHA  OK 5     3.8     34.2000  -95.6000        U 
1956 OCT 30 10 36 21.00 ROGERS      OK 7     4.1     36.2000  -95.8000        U 
1959 JUN 15 12 45 00.00 PONTOTOC    OK 5     4.0     34.8000  -96.7000        U 
1959 JUN 17 10 27 07.00 COMANCHE    OK 6     4.2     34.5000  -98.5000        U 
1961 JAN 11 01 40 00.00 LATIMER     OK 5     3.8     34.8000  -95.5000        U 
1961 APR 27 07 30 00.00 LATIMER     OK 5     4.1     34.9000  -95.3000        U 
1968 OCT 14 14 42 54.00 BRYAN       OK 6 3.5         34.0000  -96.4000        O 
1969 MAY 02 11 33 22.50 OKFUSKEE    OK F     3.5     35.5000  -96.2000        O 
1975 NOV 29 14 29 41.20 GARVIN      OK 5     3.6     34.6500  -97.5300  5.00R O 
1976 APR 19 04 42 43.90 ROGER MILLS OK 5     3.5     35.8700  -99.9700  5.00R O 
1981 JUL 11 21 09 21.84 GRADY       OK 5 2.9 3.5 3.0 34.8530  -97.7320  5.00R ON
1987 DEC 08 01 42 40.28 KINGFISHER  OK 6     3.7 3.6 36.0550  -98.0240  5.00R ON
1990 OCT 11 11 07 22.14 GARVIN      OK   3.6 3.0 1.9 34.7770  -97.5030  5.00R ON
1990 NOV 15 11 44 41.63 GARVIN      OK 6 4.0 3.9 3.0 34.7610  -97.5500 10.00R ON
1992 DEC 17 07 18 05.65 GARVIN      OK 5 3.8 3.5 3.1 34.7300  -97.5410  5.00R ON
1995 JAN 18 15 51 39.90 GARVIN      OK 6 4.1 4.2     34.7120  -97.5420  5.00R ON
1995 SEP 15 00 31 33.05 WOODS       OK 6 3.7 3.8 3.0 36.8700  -98.7260  5.00R ON
1997 SEP 06 23 31 08.58 COAL        OK F     4.4     34.6340  -96.4200  5.00R ON
1998 APR 28 14 13 02.30 COMANCHE    OK 6     4.2     34.7830  -98.4120  5.00R ON
1998 OCT 30 17 41 23.9  GRANT       OK 4     3.5     36.7710  -97.6230  7.80  OC
2002 FEB 08 16 07 13.84 COMANCHE    OK 6 3.5 3.8     34.650   -98.302   5.00R OC
2002 JUN 19 12 14 18.04 CIMARRON    OK 6     3.6     36.542  -102.918   5.00R OC
2002 OCT 20 02 18 14.06 ATOKA       OK 6 3.6 3.3 3.0 34.214   -96.181   5.00R OC
2004 JUN 08 00 15 08.38 LOVE        OK 6 3.5 3.7     34.041   -97.307   5.00R OC

The list includes all known earthquakes with a of magnitude of 3.5 or greater on any magnitude scale

Earthquakes from 1882 to 1942 are known mainly from felt effects.

Earthquakes beginning 1952 are known from felt effects plus seismograms.

Earthquakes beginning 1977 are located by the Oklahoma Geological Syrvey's Oklahoma Seismograph Network.

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