Tornado Risk in Michigan

All Michigan counties ranked by FEMA National Risk Index tornado score

Tornado risk — violently rotating columns of air capable of catastrophic local damage — is rated for 83 of 83 Michigan counties in FEMA's National Risk Index. Oakland County carries the state's highest tornado score at 99.7, with $102M in expected annual tornado losses.

11 Michigan counties are rated High or Very High for tornado, and expected annual losses from tornado total roughly $474M statewide. The full ranking below links to each county's complete 18-hazard risk profile.

County Rankings — Tornado

#CountyTornado ScoreRatingAnn. Freq.Ann. Loss
1 Oakland County
99.7
Very High 0.39 / yr $102M
2 Wayne County
99.5
Very High 0.28 / yr $44M
3 Macomb County
99.3
Very High 0.21 / yr $59M
4 Genesee County
98.5
High 0.29 / yr $29M
5 Kent County
97.8
High 0.30 / yr $28M
6 Washtenaw County
96.9
High 0.35 / yr $21M
7 Ingham County
96.2
High 0.29 / yr $16M
8 Kalamazoo County
93.7
High 0.26 / yr $12M
9 Jackson County
93.6
High 0.37 / yr $10M
10 Saginaw County
93.3
High 0.34 / yr $9M
11 Livingston County
91.5
High 0.28 / yr $14M
12 Monroe County
89.2
Medium 0.31 / yr $8M
13 Calhoun County
88.3
Medium 0.35 / yr $7M
14 Ottawa County
87.7
Medium 0.37 / yr $8M
15 St. Clair County
87.2
Medium 0.21 / yr $6M
16 Eaton County
86.5
Medium 0.29 / yr $6M
17 Shiawassee County
86.2
Medium 0.25 / yr $5M
18 Lapeer County
84.5
Medium 0.24 / yr $6M
19 Lenawee County
84.4
Medium 0.38 / yr $5M
20 Bay County
84.0
Medium 0.21 / yr $5M
21 Berrien County
83.4
Medium 0.68 / yr $5M
22 Muskegon County
80.4
Medium 0.27 / yr $4M
23 Midland County
80.3
Medium 0.19 / yr $4M
24 Isabella County
80.2
Medium 0.21 / yr $4M
25 Hillsdale County
78.5
Medium 0.31 / yr $3M
26 Ionia County
77.5
Medium 0.25 / yr $4M
27 Van Buren County
77.0
Medium 0.40 / yr $3M
28 Clinton County
76.9
Medium 0.27 / yr $6M
29 Montcalm County
76.5
Medium 0.26 / yr $3M
30 Allegan County
76.3
Medium 0.53 / yr $4M
31 Tuscola County
74.4
Medium 0.32 / yr $3M
32 Branch County
74.2
Medium 0.26 / yr $2M
33 Gratiot County
73.0
Medium 0.25 / yr $3M
34 Barry County
72.1
Medium 0.24 / yr $3M
35 Cass County
64.5
Low 0.21 / yr $2M
36 St. Joseph County
63.5
Low 0.24 / yr $2M
37 Sanilac County
63.0
Low 0.32 / yr $2M
38 Mecosta County
62.8
Low 0.17 / yr $2M
39 Clare County
58.0
Low 0.16 / yr $1M
40 Huron County
52.8
Low 0.36 / yr $1M
41 Gladwin County
49.0
Low 0.15 / yr $883K
42 Roscommon County
47.1
Low 0.13 / yr $782K
43 Newaygo County
45.4
Low 0.19 / yr $950K
44 Grand Traverse County
43.0
Low 0.07 / yr $1M
45 Iosco County
36.7
Low 0.23 / yr $521K
46 Osceola County
36.5
Low 0.14 / yr $576K
47 Ogemaw County
36.2
Low 0.12 / yr $504K
48 Wexford County
32.1
Low 0.09 / yr $496K
49 Arenac County
31.9
Low 0.16 / yr $460K
50 Menominee County
31.4
Low 0.14 / yr $440K
51 Oceana County
30.9
Low 0.21 / yr $500K
52 Emmet County
28.1
Low 0.07 / yr $481K
53 Otsego County
27.9
Low 0.08 / yr $492K
54 Kalkaska County
27.7
Low 0.09 / yr $377K
55 Antrim County
26.8
Low 0.08 / yr $456K
56 Crawford County
26.3
Low 0.10 / yr $311K
57 Cheboygan County
25.8
Very Low 0.09 / yr $279K
58 Dickinson County
25.8
Very Low 0.07 / yr $385K
59 Mason County
25.2
Very Low 0.15 / yr $283K
60 Missaukee County
25.2
Very Low 0.11 / yr $379K
61 Alpena County
24.9
Very Low 0.12 / yr $274K
62 Delta County
24.2
Very Low 0.14 / yr $288K
63 Lake County
23.7
Very Low 0.09 / yr $213K
64 Oscoda County
22.7
Very Low 0.09 / yr $200K
65 Marquette County
21.5
Very Low 0.17 / yr $244K
66 Montmorency County
21.0
Very Low 0.08 / yr $170K
67 Charlevoix County
20.7
Very Low 0.10 / yr $259K
68 Alcona County
20.7
Very Low 0.17 / yr $177K
69 Manistee County
20.4
Very Low 0.14 / yr $193K
70 Presque Isle County
20.1
Very Low 0.17 / yr $167K
71 Leelanau County
19.1
Very Low 0.17 / yr $222K
72 Gogebic County
19.0
Very Low 0.14 / yr $145K
73 Iron County
17.7
Very Low 0.13 / yr $139K
74 Benzie County
17.3
Very Low 0.08 / yr $173K
75 Mackinac County
9.3
Very Low 0.08 / yr $41K
76 Alger County
9.1
Very Low 0.11 / yr $42K
77 Schoolcraft County
8.0
Very Low 0.07 / yr $41K
78 Ontonagon County
7.5
Very Low 0.15 / yr $32K
79 Chippewa County
7.3
Very Low 0.06 / yr $34K
80 Baraga County
6.3
Very Low 0.06 / yr $22K
81 Houghton County
6.2
Very Low 0.05 / yr $34K
82 Luce County
3.7
Very Low 0.04 / yr $8K
83 Keweenaw County
1.8
Very Low 0.05 / yr $1K

83 Michigan counties with measurable tornado risk. See the national tornado ranking or all Michigan counties by overall risk.

Frequently Asked Questions

Which Michigan county has the highest tornado risk?

Oakland County has the highest FEMA tornado risk score in Michigan at 99.7 (Very High), with $102M in expected annual losses and about 0.39 events per year.

How many Michigan counties face significant tornado risk?

83 Michigan counties record measurable tornado risk in FEMA's National Risk Index; 11 of them are rated High or Very High.

Other Hazards in Michigan