Tornadoes · United States · Oklahoma

Tornadoes in Grady County, Oklahoma

95 tornadoes have crossed Grady County since 1950, 11th of the 77 counties in Oklahoma with a tornado on record, an average of 1.3 a year. They have killed 39 people and injured 736. 3 were rated F4 or EF4 and above, 1 at the top of the scale.

The rating scale

Tracks are drawn in the color of the rating. The United States rated tornadoes on Ted Fujita’s F scale until 31 January 2007 and on the Enhanced Fujita scale after it. Both run from 0 to 5, and both rate the damage rather than measure the wind: the speeds are what that damage is taken to imply.

  1. F0 / EF040 to 72 mph on the F scale, 65 to 85 mph on the EF scale

    Light damage. Surface peeled off some roofs, gutters and siding damaged, branches broken, shallow-rooted trees pushed over.

  2. F1 / EF173 to 112 mph on the F scale, 86 to 110 mph on the EF scale

    Moderate damage. Roofs badly stripped, mobile homes overturned or badly damaged, exterior doors lost, windows broken.

  3. F2 / EF2113 to 157 mph on the F scale, 111 to 135 mph on the EF scale

    Considerable damage. Roofs torn off well-built houses, frame homes shifted on their foundations, mobile homes destroyed, large trees snapped or uprooted, cars lifted off the ground.

  4. F3 / EF3158 to 206 mph on the F scale, 136 to 165 mph on the EF scale

    Severe damage. Whole stories of well-built houses destroyed, large buildings badly damaged, trains overturned, trees debarked, heavy cars lifted and thrown.

  5. F4 / EF4207 to 260 mph on the F scale, 166 to 200 mph on the EF scale

    Devastating damage. Well-built houses leveled, structures with weak foundations moved some distance, cars thrown and large missiles generated.

  6. F5 / EF5261 to 318 mph on the F scale, over 200 mph on the EF scale

    Incredible damage. Strong frame houses swept off their foundations, car-sized missiles thrown more than 100 meters, steel-reinforced concrete badly damaged, high-rise buildings deformed.

  7. Unrated

    The survey recorded a tornado but could not put a number on it, most often because it crossed open country and damaged nothing a rating can be read from.

Now

Tornadoes
95
Deaths
39
Injuries
736
F4 and above
3
Worst on record
F5, May 3, 1999

The deadliest in Grady County

  1. F5 Bridge Creek–Moore tornado, OklahomaMay 3, 199936 killed, 583 injured
  2. EF4 Chickasha tornado, OklahomaMay 24, 20111 killed, 48 injured
  3. F3, Grady County, OklahomaMarch 13, 19531 killed, 8 injured
  4. F2, Grady County, OklahomaApril 30, 19811 killed, 4 injured

The strongest

  1. F5 Bridge Creek–Moore tornado, OklahomaMay 3, 1999F5, 37.0 mi (60 km)
  2. EF4 Chickasha tornado, OklahomaMay 24, 2011EF4, 33.3 mi (54 km)
  3. EF4 Goldsby tornado, OklahomaMay 24, 2011EF4, 23.1 mi (37 km)
  4. F3, Grady, Canadian, Oklahoma and Lincoln counties, OklahomaApril 20, 1974F3, 63.6 mi (102 km)
  5. EF3, Grady County, OklahomaMay 6, 2015EF3, 10.3 mi (17 km)
  6. F3, Grady and Caddo counties, OklahomaMay 3, 1999F3, 9.0 mi (14 km)
  7. F3, Grady County, OklahomaApril 28, 1960F3, 3.6 mi (6 km)
  8. F3, Grady County, OklahomaApril 30, 1961F3, 2.0 mi (3 km)
  9. F3, Grady County, OklahomaApril 28, 1960F3, 1.5 mi (2 km)
  10. F3, Grady County, OklahomaMarch 13, 1953F3, 1.0 mi (2 km)

Every year with a tornado

The 37 years of the 76 in the record with a tornado in Grady County. Each year links to every tornado in Oklahoma that year.

YearTornadoesDeathsInjuriesStrongest
20241EF1
20239EF1
20222EF2
20213EF0
20201EF1
20183EF1
20164EF1
20155EF3
20132EF0
201121109EF4
20101EF1
20073EF1
20031F0
20012F0
1999736591F5
19982F2
19971F1
19931F1
199011F2
19833F1
1981214F2
19773F2
197413F3
197311F1
197038F2
19692F1
19682F1
196552F2
196122F3
196064F3
19591F2
19582F0
19561F1
19553F1
1953419F3
19521F1
195122F2

Every tornado that crossed Grady County

95 tornadoes, newest first.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
April 27, 20248:53 PM CDTEF1McClain4.4225$44,000
May 13, 20233:18 PM CDTEF0Grady0.120
May 11, 20238:04 PM CDTEF0Grady1.575
May 11, 20237:45 PM CDTUnratedGrady0.220
May 11, 20237:36 PM CDTEF0Grady0.430$4,000
May 11, 20236:57 PM CDTUnratedGrady2.950
May 11, 20236:25 PM CDTEF0Grady1.020
April 19, 20237:20 PM CDTEF1Grady2.9200$30,000
February 26, 20238:57 PM CSTEF1Grady10.7200$255,000
February 26, 20238:52 PM CSTEF0Grady0.375$10,000
December 13, 20224:51 AM CSTEF2Grady0.650$75,000
April 23, 20227:01 PM CDTEF0Grady3.830$10,000
October 10, 20217:16 PM CDTUnratedGrady0.250
October 10, 20217:02 PM CDTUnratedGrady1.850
June 13, 20214:01 PM CDTEF0Grady0.510
April 21, 202011:28 PM CDTEF1Comanche0.3100$50,000
May 2, 20188:05 PM CDTEF1Grady0.425$10,000
May 2, 20187:58 PM CDTEF1Grady5.5100$20,000
May 2, 20187:55 PM CDTEF1Grady10.0400$30,000
May 31, 20165:28 PM CDTUnratedGrady0.530
May 31, 20165:28 PM CDTUnratedGrady0.730
May 31, 20165:28 PM CDTUnratedGrady0.730
April 29, 20164:03 PM CDTEF1Grady12.01,000$35,000
May 23, 20155:12 PM CDTEF1Grady6.0500
May 6, 20158:11 PM CDTEF0Grady3.5200
May 6, 20157:49 PM CDTEF0Grady0.540
May 6, 20154:48 PM CDTEF0Grady to KS, NE0.350
May 6, 20154:33 PM CDTEF3Grady10.31,500
May 31, 20137:45 PM CDTEF0Grady0.250
May 8, 20138:18 PM CDTEF0Grady0.150
May 24, 20115:26 PM CDTEF4Goldsby tornado23.188061
May 24, 20115:06 PM CDTEF4Chickasha tornado33.3880148
May 10, 20105:20 PM CDTEF1Stephens6.3700
August 19, 20072:32 AM CDTEF1Canadian7.075$50,000
August 18, 20078:44 PM CDTEF1Grady2.030$15,000
May 8, 200710:54 PM CDTEF1Grady1.530$70,000
May 9, 20039:17 PM CDTF0Caddo1.250$10,000
May 4, 20017:20 PM CDTF0Grady0.750
May 4, 20017:05 PM CDTF0Grady0.225
May 3, 19997:55 PM CDTF1Grady0.150$10,000
May 3, 19997:47 PM CDTF1Grady4.060$20,000
May 3, 19997:37 PM CDTF1Grady2.0300$1,000
May 3, 19996:26 PM CDTF5Bridge Creek–Moore tornado37.01,43036583$1.0 billion
May 3, 19996:12 PM CDTF2Grady4.05004$500,000
May 3, 19996:07 PM CDTF0Grady1.00
May 3, 19995:46 PM CDTF3Grady9.08804$150,000
October 4, 19988:15 PM CDTF2McClain5.080$130,000
October 4, 19986:54 PM CDTF2Grady1.5200$50,000
May 25, 19974:14 PM CDTF1Grady2.573$20,000
March 29, 19939:52 PM CSTF1Grady5.033
March 13, 19904:44 PM CSTF2Grady28.02001$500,000 to $5 million
June 28, 19831:45 AM CDTF0Grady0.110under $50
May 13, 198311:45 PM CDTF1Grady0.150under $50
March 3, 19831:00 PM CSTF1Grady0.120$5,000 to $50,000
April 30, 19819:15 PM CDTF2Grady29.11014$50,000 to $500,000
April 30, 19819:00 PM CDTF1Caddo31.910$50,000 to $500,000
May 20, 19774:43 PM CDTF1Grady2.590$5,000 to $50,000
March 2, 19774:30 PM CSTF2Grady4.9100$5,000 to $50,000
March 2, 19774:30 PM CSTF1Grady5.7100$5,000 to $50,000
April 20, 19744:00 PM CDTF3Grady63.61003$500,000 to $5 million
June 18, 19738:00 PM CDTF1Grady3.8501$500 to $5,000
June 20, 19705:53 PM CDTF0Grady0.110
April 30, 19702:00 AM CDTF2Grady46.75006$5 million to $50 million
April 29, 197011:25 PM CDTF2Jackson170.52502$500,000 to $5 million
May 3, 19693:00 PM GMT-5F1Grady0.110
April 26, 19695:00 PM GMT-6F1Grady10.410$50,000 to $500,000
June 5, 19687:18 PM GMT-5F0Grady0.110
April 19, 19683:45 PM GMT-6F1Grady0.110$500 to $5,000
May 26, 19653:35 AM GMT-5F1Grady0.110$50 to $500
April 8, 19651:00 AM GMT-6F1Grady0.310$500 to $5,000
April 8, 196512:20 AM GMT-6F2Grady1.010$50 to $500
April 8, 196512:20 AM GMT-6F2Grady1.010$50 to $500
April 7, 196511:50 PM GMT-6F2Caddo22.44402$500,000 to $5 million
May 16, 196111:57 PM GMT-5F0Grady0.110$50 to $500
April 30, 19617:45 PM GMT-5F3Grady2.0772$5,000 to $50,000
May 19, 19605:00 PM GMT-5F1Caddo0.110$500 to $5,000
April 28, 19609:50 PM GMT-5F3Grady1.52001$50,000 to $500,000
April 28, 19608:45 PM GMT-5F2Grady3.62001$500 to $5,000
April 28, 19608:45 PM GMT-5F2Grady3.3200$50 to $500
April 28, 19608:45 PM GMT-5F3Grady3.62002$5,000 to $50,000
April 28, 19608:45 PM GMT-5F2Grady2.0300$50,000 to $500,000
May 22, 19593:20 AM GMT-5F2Grady0.110$500 to $5,000
April 21, 19584:05 PM GMT-6F0Grady0.110under $50
April 21, 19583:35 PM GMT-6F0Grady0.110under $50
April 28, 19562:20 PM GMT-6F1Grady35.410$50 to $500
May 26, 19553:30 AM GMT-5F1Grady0.110$5,000 to $50,000
May 25, 19557:00 PM GMT-5F1Grady0.110$500 to $5,000
January 5, 19555:00 AM GMT-6F0Grady0.110
June 19, 19536:30 PM GMT-5F1Grady6.1880$5,000 to $50,000
April 14, 19536:50 PM GMT-6F2Canadian16.2440$50,000 to $500,000
March 13, 19536:19 PM GMT-6F3Grady1.010018$50,000 to $500,000
March 13, 19535:15 PM GMT-6F2Grady23.61001$5,000 to $50,000
May 22, 195212:30 AM GMT-5F1Grady0.110$50 to $500
June 6, 195112:50 AM GMT-5F2Grady3.8450$500 to $5,000
April 5, 19511:22 PM GMT-6F2Grady0.21002$50,000 to $500,000

Nearby

Warnings in force in Grady CountyThe forecast for Grady CountyThe live radar over Grady CountyEvery county in Oklahoma

What this means

Ratings are the survey's, read off the damage rather than measured; the rating scale is above. Tornado counts rise through the record as reporting improved, so a year in the 1950s is not comparable with one today except for the strongest tornadoes, which were always noticed.

Sources

NOAA Storm Prediction Center tornado database, 1950-2025, the official record kept by NOAA's Storm Prediction Center.