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Indiana tornado risk

92 counties scored 2 rated Very High

Lake County has the highest tornado risk in Indiana, scoring 99.1 out of 100 — rated "Very High" by FEMA's National Risk Index. Recorded tornado events across Indiana have increased 63% over the past five years compared to the prior five-year period.

# County NRI score Rating NOAA events
2016–2026
1 Lake County 99.1 Very High 16
2 Marion County 99 Very High 3
3 Allen County 97.5 Relatively High 5
4 Hamilton County 96.8 Relatively High 3
5 Vanderburgh County 95.9 Relatively High 10
6 Clark County 95.2 Relatively High 5
7 Porter County 94.4 Relatively High 5
8 LaPorte County 92.6 Relatively High 4
9 Floyd County 92.2 Relatively High 7
10 Wayne County 90.7 Relatively High 4
11 Elkhart County 90.6 Relatively High 2
12 St. Joseph County 90.5 Relatively High 8
13 Delaware County 90.4 Relatively High 6
14 Johnson County 89.3 Relatively Moderate 4
15 Grant County 88.8 Relatively Moderate 4
16 Bartholomew County 87.3 Relatively Moderate 1
17 Hendricks County 87 Relatively Moderate 6
18 Kosciusko County 85.9 Relatively Moderate 5
19 Madison County 85.3 Relatively Moderate 8
20 Howard County 83.7 Relatively Moderate 9
21 Tippecanoe County 83.3 Relatively Moderate 7
22 Jackson County 83.2 Relatively Moderate 5
23 Vigo County 83.2 Relatively Moderate 1
24 Monroe County 82.2 Relatively Moderate 6
25 Harrison County 82.1 Relatively Moderate 5
26 Jefferson County 82.1 Relatively Moderate 4
27 LaGrange County 80.9 Relatively Moderate 1
28 Henry County 80.7 Relatively Moderate 2
29 Ripley County 79.5 Relatively Moderate 9
30 Shelby County 78.8 Relatively Moderate 5
31 Morgan County 77.7 Relatively Moderate 2
32 Washington County 77.3 Relatively Moderate 10
33 Orange County 76.7 Relatively Moderate 7
34 Adams County 75.9 Relatively Moderate 4
35 Dearborn County 75.5 Relatively Moderate 4
36 Noble County 74.5 Relatively Moderate 3
37 Lawrence County 74.3 Relatively Moderate 6
38 Hancock County 73.9 Relatively Moderate 2
39 Scott County 72.6 Relatively Moderate 3
40 Daviess County 72.1 Relatively Moderate 6
41 Wabash County 71.7 Relatively Moderate 3
42 Warrick County 71.7 Relatively Moderate 10
43 Randolph County 69.3 Relatively Moderate 3
44 Fayette County 68.2 Relatively Moderate 2
45 Huntington County 67.9 Relatively Moderate 2
46 Jennings County 67.8 Relatively Moderate 2
47 DeKalb County 67.6 Relatively Moderate 0
48 Marshall County 66.3 Relatively Moderate 4
49 Perry County 64.5 Relatively Low 2
50 Greene County 63.5 Relatively Low 5
51 Putnam County 63 Relatively Low 1
52 Jay County 61.7 Relatively Low 7
53 Knox County 61 Relatively Low 3
54 Whitley County 60.9 Relatively Low 1
55 Crawford County 60.5 Relatively Low 2
56 Franklin County 60.5 Relatively Low 5
57 Cass County 60.4 Relatively Low 5
58 Steuben County 60.4 Relatively Low 6
59 Starke County 59.7 Relatively Low 3
60 Decatur County 59.5 Relatively Low 4
61 Miami County 59.2 Relatively Low 5
62 Wells County 59.1 Relatively Low 3
63 Dubois County 58.7 Relatively Low 5
64 Clinton County 56.7 Relatively Low 2
65 Posey County 55.9 Relatively Low 10
66 Spencer County 55.5 Relatively Low 7
67 Rush County 54.8 Relatively Low 5
68 White County 52.5 Relatively Low 6
69 Brown County 51.1 Relatively Low 2
70 Fulton County 50.8 Relatively Low 2
71 Switzerland County 49.2 Relatively Low 2
72 Montgomery County 48.3 Relatively Low 6
73 Sullivan County 48 Relatively Low 4
74 Parke County 47.5 Relatively Low 2
75 Jasper County 46.2 Relatively Low 4
76 Owen County 45.8 Relatively Low 2
77 Clay County 45.3 Relatively Low 0
78 Blackford County 45.2 Relatively Low 1
79 Carroll County 42.6 Relatively Low 5
80 Tipton County 42.2 Relatively Low 0
81 Pike County 40.3 Relatively Low 4
82 Boone County 39.6 Relatively Low 5
83 Vermillion County 39.5 Relatively Low 0
84 Gibson County 38.7 Relatively Low 11
85 Fountain County 36.9 Relatively Low 1
86 Martin County 34.7 Relatively Low 3
87 Pulaski County 34.6 Relatively Low 0
88 Ohio County 34.5 Relatively Low 4
89 Newton County 32.5 Relatively Low 7
90 Benton County 29.5 Relatively Low 4
91 Union County 28.4 Relatively Low 1
92 Warren County 23.8 Very Low 1

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 Indiana:

WildfireInland FloodingCoastal FloodingEarthquakeHeat WaveHurricaneHailStrong WindWinter WeatherIce StormCold WaveLightningDroughtLandslideAvalancheTsunamiVolcanic Activity

Frequently asked questions

What is the highest tornado risk county in Indiana?

Lake County, IN has the highest tornado risk in Indiana, with a FEMA National Risk Index score of 99.1 out of 100 (rated "Very High").

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

2 of 92 scored Indiana counties are rated "Very High" for tornado risk by FEMA's National Risk Index.

What causes tornado risk in Indiana?

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.