Hurricane Erin may bring isolated flash and urban flooding, landslides or mudslides, and possible tropical storm conditions to Puerto Rico and the U.S. Virgin Islands this weekend. Scattered thunderstorms and heavy rainfall may bring areas of flooding this weekend over the Upper Midwest. A tropical disturbance will bring locally heavy rain and mainly urban flash flooding to far southern Texas. 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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US Dept of Commerce
National Oceanic and Atmospheric Administration
National Weather Service
Norman, OK
National Weather Center
120 David L. Boren Blvd. Suite 2400
Norman, OK 73072
(405) 325-3816
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