A strong atmospheric river will continue to impact northern California with heavy rain and life-threatening flooding through Friday. Unsettled weather is expected across much of the Northeast and Great Lakes over the next few days, including the likelihood of heavy snow in the central Appalachians and higher elevations of northeastern Pennsylvania and southern New York. Read More >
Norman, OK
Weather Forecast Office
| SPC ID # |
Date | Time (CST) |
Path Length (miles) |
Path Width (yards) |
F-Scale | Killed | Injured | County | Path |
|---|---|---|---|---|---|---|---|---|---|
| 05/20/1944 | 2015 | 880 | 0 | Knox | Near Knox City | ||||
| 53-4 | 03/13/1953 | 1400 | 14 | 50 | F4 | 17 | 25 | Haskell/ Knox | Near Judd... O'Brien and Knox City |
| 53-19 | 08/11/1953 | 1745 | 5 | 17 | F0 | 0 | 0 | Knox | Near Knox City |
| 55-61 | 05/25/1955 | 2330 | 12 | 300 | F2 | 0 | 0 | Knox | 9 W Knox City |
| 56-21 | 05/27/1956 | 1630 | 13 | 17 | F0 | 0 | 0 | Knox/ Haskell | Near Judd and Knox City |
| 56-22 | 05/27/1956 | 1630 | 10 | 17 | F0 | 0 | 0 | Knox/ Haskell | Near Judd and Knox City |
| 62-121 | 08/02/1962 | 1140 | n/a | n/a | F0 | 0 | 0 | Knox | 5 NE Knox City |
| 74-83 | 08/27/1974 | 1300 | n/a | n/a | F1 | 0 | 0 | Knox | 8 W Knox City |
| 89-32 | 05/13/1989 | 1329 | 0.2 | 10 | F1 | 0 | 0 | Knox | 2 N Knox City |
| 90-79 | 05/14/1990 | 1810 | 7 | 50 | F1 | 0 | 0 | Knox | 8 W - 1 W Knox City |
| 04/15/2003 | 1952 | 2 | 100 | F1 | 0 | 0 | Knox | 2 NW - 3 NNW Knox City | |
| 04/22/2015 | 2050 | 0.2 | 30 | EF0 | 0 | 0 | Knox | 6 NW Knox City |
Records taken from the Storm Prediction Center archive data, "Storm Data", and data from the National Weather Service office in Norman. Data modified as described in NOAA Tech Memo NWS SR-209 (Speheger, D., 2001: "Corrections to the Historic Tornado Database").
Historic data, especially before 1950, are likely incomplete.
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Norman, OK
National Weather Center
120 David L. Boren Blvd. Suite 2400
Norman, OK 73072
(405) 325-3816
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