Tornado Risk in Wisconsin

All Wisconsin counties ranked by FEMA National Risk Index tornado score

Tornado risk — violently rotating columns of air capable of catastrophic local damage — is rated for 72 of 72 Wisconsin counties in FEMA's National Risk Index. Milwaukee County carries the state's highest tornado score at 99.0, with $32M in expected annual tornado losses.

8 Wisconsin counties are rated High or Very High for tornado, and expected annual losses from tornado total roughly $308M statewide. The full ranking below links to each county's complete 18-hazard risk profile.

County Rankings — Tornado

#CountyTornado ScoreRatingAnn. Freq.Ann. Loss
1 Milwaukee County
99.0
Very High 0.40 / yr $32M
2 Dane County
97.6
High 0.93 / yr $26M
3 Waukesha County
95.7
High 0.37 / yr $24M
4 Rock County
94.3
High 0.58 / yr $13M
5 Brown County
93.4
High 0.22 / yr $12M
6 Racine County
93.1
High 0.31 / yr $11M
7 Kenosha County
92.7
High 0.32 / yr $10M
8 Winnebago County
91.3
High 0.34 / yr $9M
9 Fond du Lac County
88.5
Medium 0.51 / yr $8M
10 Walworth County
88.2
Medium 0.40 / yr $7M
11 Outagamie County
86.8
Medium 0.31 / yr $8M
12 Jefferson County
86.1
Medium 0.43 / yr $7M
13 Dodge County
85.3
Medium 0.65 / yr $6M
14 St. Croix County
84.8
Medium 0.43 / yr $8M
15 La Crosse County
84.6
Medium 0.20 / yr $6M
16 Sheboygan County
84.4
Medium 0.46 / yr $6M
17 Washington County
84.1
Medium 0.28 / yr $9M
18 Marathon County
83.8
Medium 0.60 / yr $6M
19 Eau Claire County
80.6
Medium 0.27 / yr $5M
20 Wood County
79.0
Medium 0.36 / yr $4M
21 Sauk County
78.3
Medium 0.54 / yr $4M
22 Manitowoc County
77.3
Medium 0.43 / yr $4M
23 Waupaca County
76.8
Medium 0.42 / yr $3M
24 Polk County
76.5
Medium 0.44 / yr $3M
25 Grant County
76.4
Medium 0.78 / yr $3M
26 Monroe County
76.3
Medium 0.37 / yr $3M
27 Columbia County
75.7
Medium 0.58 / yr $4M
28 Green Lake County
75.1
Medium 0.28 / yr $2M
29 Barron County
75.0
Medium 0.35 / yr $3M
30 Adams County
73.4
Medium 0.41 / yr $2M
31 Pierce County
73.4
Medium 0.39 / yr $4M
32 Clark County
71.7
Medium 0.45 / yr $2M
33 Chippewa County
70.9
Medium 0.39 / yr $3M
34 Portage County
70.2
Medium 0.42 / yr $4M
35 Vernon County
69.4
Medium 0.38 / yr $2M
36 Dunn County
68.3
Medium 0.45 / yr $3M
37 Shawano County
65.9
Medium 0.39 / yr $3M
38 Green County
65.6
Medium 0.46 / yr $3M
39 Juneau County
65.3
Medium 0.39 / yr $2M
40 Oconto County
60.3
Low 0.31 / yr $2M
41 Waushara County
60.2
Low 0.38 / yr $2M
42 Trempealeau County
59.8
Low 0.30 / yr $2M
43 Ozaukee County
59.3
Low 0.37 / yr $3M
44 Crawford County
58.4
Low 0.32 / yr $2M
45 Calumet County
58.2
Low 0.21 / yr $3M
46 Marquette County
52.9
Low 0.31 / yr $1M
47 Jackson County
51.6
Low 0.39 / yr $1M
48 Richland County
51.0
Low 0.32 / yr $1M
49 Iowa County
49.3
Low 0.50 / yr $2M
50 Marinette County
49.0
Low 0.27 / yr $1M
51 Taylor County
48.6
Low 0.32 / yr $1M
52 Door County
47.6
Low 0.27 / yr $1M
53 Oneida County
46.7
Low 0.28 / yr $1M
54 Burnett County
46.7
Low 0.29 / yr $814K
55 Langlade County
45.6
Low 0.27 / yr $1M
56 Lafayette County
44.6
Low 0.49 / yr $1M
57 Lincoln County
44.0
Low 0.27 / yr $1M
58 Kewaunee County
39.7
Low 0.21 / yr $1M
59 Buffalo County
36.4
Low 0.35 / yr $869K
60 Washburn County
35.5
Low 0.23 / yr $678K
61 Rusk County
34.4
Low 0.28 / yr $589K
62 Price County
34.3
Low 0.32 / yr $574K
63 Pepin County
30.9
Low 0.14 / yr $566K
64 Sawyer County
30.2
Low 0.31 / yr $367K
65 Vilas County
29.1
Low 0.16 / yr $391K
66 Douglas County
27.4
Low 0.20 / yr $471K
67 Forest County
22.0
Very Low 0.21 / yr $220K
68 Menominee County
21.5
Very Low 0.13 / yr $171K
69 Bayfield County
16.0
Very Low 0.18 / yr $133K
70 Ashland County
13.8
Very Low 0.19 / yr $101K
71 Iron County
12.2
Very Low 0.12 / yr $71K
72 Florence County
11.0
Very Low 0.06 / yr $77K

72 Wisconsin counties with measurable tornado risk. See the national tornado ranking or all Wisconsin counties by overall risk.

Frequently Asked Questions

Which Wisconsin county has the highest tornado risk?

Milwaukee County has the highest FEMA tornado risk score in Wisconsin at 99.0 (Very High), with $32M in expected annual losses and about 0.40 events per year.

How many Wisconsin counties face significant tornado risk?

72 Wisconsin counties record measurable tornado risk in FEMA's National Risk Index; 8 of them are rated High or Very High.

Other Hazards in Wisconsin