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Oklahoma tornado risk

77 counties scored 2 rated Very High

Oklahoma County has the highest tornado risk in Oklahoma, scoring 99.5 out of 100 — rated "Very High" by FEMA's National Risk Index. Recorded tornado events across Oklahoma have increased 18% over the past five years compared to the prior five-year period.

# County NRI score Rating NOAA events
2016–2026
1 Oklahoma County 99.5 Very High 27
2 Tulsa County 99.1 Very High 25
3 Pottawatomie County 96.6 Relatively High 31
4 Cleveland County 96.3 Relatively High 38
5 Comanche County 95.5 Relatively High 9
6 Canadian County 95 Relatively High 13
7 Bryan County 94.8 Relatively High 7
8 Payne County 94.7 Relatively High 9
9 Carter County 94 Relatively High 12
10 Grady County 93.8 Relatively High 24
11 Kay County 93.4 Relatively High 6
12 Creek County 92.9 Relatively High 12
13 Logan County 92.7 Relatively High 9
14 Washington County 92.7 Relatively High 5
15 Garfield County 92.2 Relatively High 7
16 Custer County 91.3 Relatively High 14
17 Muskogee County 90.8 Relatively High 16
18 Stephens County 89.8 Relatively Moderate 14
19 McClain County 89.1 Relatively Moderate 28
20 Osage County 88.7 Relatively Moderate 23
21 Lincoln County 88.6 Relatively Moderate 15
22 Pontotoc County 88.5 Relatively Moderate 20
23 Mayes County 88.3 Relatively Moderate 27
24 Le Flore County 88.2 Relatively Moderate 15
25 Delaware County 87 Relatively Moderate 19
26 Beckham County 86.7 Relatively Moderate 10
27 Sequoyah County 86 Relatively Moderate 17
28 Garvin County 85.1 Relatively Moderate 12
29 Okmulgee County 84.7 Relatively Moderate 16
30 Caddo County 82.5 Relatively Moderate 16
31 Cherokee County 81.6 Relatively Moderate 19
32 Marshall County 81.4 Relatively Moderate 9
33 Rogers County 81.4 Relatively Moderate 22
34 Pittsburg County 81.2 Relatively Moderate 13
35 Kingfisher County 81 Relatively Moderate 14
36 Choctaw County 80.6 Relatively Moderate 5
37 McIntosh County 79.5 Relatively Moderate 13
38 Seminole County 78.7 Relatively Moderate 12
39 McCurtain County 76.7 Relatively Moderate 14
40 Ottawa County 73.6 Relatively Moderate 13
41 Kiowa County 72.4 Relatively Moderate 16
42 Wagoner County 72 Relatively Moderate 20
43 Pawnee County 70 Relatively Moderate 1
44 Jackson County 69.9 Relatively Moderate 9
45 Noble County 69.3 Relatively Moderate 8
46 Murray County 68.6 Relatively Moderate 11
47 Craig County 66.8 Relatively Moderate 7
48 Adair County 66.2 Relatively Moderate 17
49 Hughes County 64.3 Relatively Low 6
50 Nowata County 64.1 Relatively Low 8
51 Washita County 60.7 Relatively Low 10
52 Texas County 59.3 Relatively Low 8
53 Johnston County 59.1 Relatively Low 15
54 Love County 58.2 Relatively Low 12
55 Pushmataha County 54.6 Relatively Low 2
56 Jefferson County 54.3 Relatively Low 5
57 Greer County 53 Relatively Low 10
58 Coal County 52.5 Relatively Low 10
59 Latimer County 52.4 Relatively Low 2
60 Blaine County 51.7 Relatively Low 7
61 Woodward County 51.4 Relatively Low 5
62 Atoka County 49.7 Relatively Low 8
63 Okfuskee County 47.9 Relatively Low 16
64 Haskell County 46.3 Relatively Low 4
65 Alfalfa County 44.7 Relatively Low 7
66 Major County 41.1 Relatively Low 11
67 Tillman County 41.1 Relatively Low 23
68 Dewey County 39.1 Relatively Low 3
69 Roger Mills County 39.1 Relatively Low 14
70 Ellis County 38.2 Relatively Low 10
71 Grant County 36.5 Relatively Low 6
72 Beaver County 35 Relatively Low 9
73 Harmon County 33.7 Relatively Low 12
74 Woods County 33.6 Relatively Low 7
75 Harper County 30.6 Relatively Low 7
76 Cotton County 28.3 Relatively Low 6
77 Cimarron County 18.1 Very Low 18

Source: FEMA National Risk Index v1.20.0, December 2025. Scores are 0–100 percentile rankings among all US counties. See the methodology page for definitions. Download the full CSV for all counties.

Tornado risk nationally:

Top 50 US counties

Other hazard risks in Oklahoma:

WildfireInland FloodingCoastal FloodingEarthquakeHeat WaveHurricaneHailStrong WindWinter WeatherIce StormCold WaveLightningDroughtLandslideAvalancheTsunamiVolcanic Activity

Frequently asked questions

What is the highest tornado risk county in Oklahoma?

Oklahoma County, OK has the highest tornado risk in Oklahoma, with a FEMA National Risk Index score of 99.5 out of 100 (rated "Very High").

How many counties in Oklahoma are rated Very High for tornado risk?

2 of 77 scored Oklahoma counties are rated "Very High" for tornado risk by FEMA's National Risk Index.

What causes tornado risk in Oklahoma?

Tornado risk concentrates in the central and southern plains ("Tornado Alley") and the Southeast ("Dixie Alley"), where atmospheric conditions favor supercell thunderstorm development. The highest scores often belong to counties with significant mobile home and manufactured housing stock, which carries disproportionate tornado mortality risk.