Ohio ice storm risk
Montgomery County has the highest ice storm risk in Ohio, scoring 96.3 out of 100 — rated "Very High" by FEMA's National Risk Index.
| # | County | NRI score | Rating |
|---|---|---|---|
| 1 | Montgomery County | 96.3 | Very High |
| 2 | Lucas County | 95.8 | Very High |
| 3 | Summit County | 95 | Relatively High |
| 4 | Cuyahoga County | 92.6 | Relatively High |
| 5 | Lorain County | 92.5 | Relatively High |
| 6 | Butler County | 92 | Relatively High |
| 7 | Stark County | 89.9 | Relatively High |
| 8 | Richland County | 89 | Relatively High |
| 9 | Fairfield County | 88.3 | Relatively High |
| 10 | Clermont County | 88.2 | Relatively High |
| 11 | Warren County | 88 | Relatively High |
| 12 | Franklin County | 87.5 | Relatively High |
| 13 | Clark County | 87.4 | Relatively High |
| 14 | Delaware County | 86.8 | Relatively High |
| 15 | Hamilton County | 86.5 | Relatively High |
| 16 | Greene County | 86.3 | Relatively High |
| 17 | Medina County | 86.1 | Relatively High |
| 18 | Licking County | 85.9 | Relatively High |
| 19 | Mahoning County | 83.6 | Relatively High |
| 20 | Wood County | 83 | Relatively High |
| 21 | Holmes County | 82.8 | Relatively High |
| 22 | Wayne County | 82.8 | Relatively High |
| 23 | Portage County | 81.8 | Relatively Moderate |
| 24 | Trumbull County | 81.2 | Relatively Moderate |
| 25 | Sandusky County | 80.6 | Relatively Moderate |
| 26 | Lake County | 80.2 | Relatively Moderate |
| 27 | Ashland County | 80.1 | Relatively Moderate |
| 28 | Crawford County | 79.6 | Relatively Moderate |
| 29 | Erie County | 79.2 | Relatively Moderate |
| 30 | Knox County | 79 | Relatively Moderate |
| 31 | Allen County | 78.3 | Relatively Moderate |
| 32 | Miami County | 78 | Relatively Moderate |
| 33 | Athens County | 77.7 | Relatively Moderate |
| 34 | Hancock County | 77.6 | Relatively Moderate |
| 35 | Ross County | 77.3 | Relatively Moderate |
| 36 | Pickaway County | 76.9 | Relatively Moderate |
| 37 | Logan County | 75.1 | Relatively Moderate |
| 38 | Seneca County | 75.1 | Relatively Moderate |
| 39 | Marion County | 75 | Relatively Moderate |
| 40 | Union County | 75 | Relatively Moderate |
| 41 | Meigs County | 74.7 | Relatively Moderate |
| 42 | Ottawa County | 74.6 | Relatively Moderate |
| 43 | Tuscarawas County | 74.2 | Relatively Moderate |
| 44 | Washington County | 73 | Relatively Moderate |
| 45 | Wyandot County | 72.5 | Relatively Moderate |
| 46 | Highland County | 72.4 | Relatively Moderate |
| 47 | Muskingum County | 72.4 | Relatively Moderate |
| 48 | Geauga County | 71.7 | Relatively Moderate |
| 49 | Clinton County | 71.3 | Relatively Moderate |
| 50 | Lawrence County | 70.3 | Relatively Moderate |
| 51 | Shelby County | 70 | Relatively Moderate |
| 52 | Madison County | 69.2 | Relatively Moderate |
| 53 | Morrow County | 69.2 | Relatively Moderate |
| 54 | Scioto County | 68.9 | Relatively Moderate |
| 55 | Ashtabula County | 68.8 | Relatively Moderate |
| 56 | Hocking County | 68.4 | Relatively Moderate |
| 57 | Jackson County | 68.2 | Relatively Moderate |
| 58 | Huron County | 67.5 | Relatively Moderate |
| 59 | Columbiana County | 67.3 | Relatively Moderate |
| 60 | Perry County | 67.3 | Relatively Moderate |
| 61 | Gallia County | 66.8 | Relatively Moderate |
| 62 | Belmont County | 66.6 | Relatively Moderate |
| 63 | Fayette County | 66.1 | Relatively Moderate |
| 64 | Jefferson County | 65.1 | Relatively Moderate |
| 65 | Brown County | 64.9 | Relatively Moderate |
| 66 | Coshocton County | 63.7 | Relatively Moderate |
| 67 | Williams County | 62.8 | Relatively Moderate |
| 68 | Fulton County | 61.9 | Relatively Moderate |
| 69 | Preble County | 61.4 | Relatively Moderate |
| 70 | Auglaize County | 59.7 | Relatively Low |
| 71 | Henry County | 59.3 | Relatively Low |
| 72 | Pike County | 59.2 | Relatively Low |
| 73 | Putnam County | 58.4 | Relatively Low |
| 74 | Champaign County | 58.1 | Relatively Low |
| 75 | Guernsey County | 56.6 | Relatively Low |
| 76 | Defiance County | 54.6 | Relatively Low |
| 77 | Adams County | 53.1 | Relatively Low |
| 78 | Vinton County | 51.8 | Relatively Low |
| 79 | Morgan County | 48.8 | Relatively Low |
| 80 | Noble County | 48.5 | Relatively Low |
| 81 | Paulding County | 47.3 | Relatively Low |
| 82 | Hardin County | 45.2 | Relatively Low |
| 83 | Mercer County | 45.1 | Relatively Low |
| 84 | Monroe County | 44.4 | Relatively Low |
| 85 | Darke County | 42.1 | Relatively Low |
| 86 | Van Wert County | 38.2 | Relatively Low |
| 87 | Carroll County | 31.6 | Relatively Low |
| 88 | Harrison County | 21.6 | Very Low |
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.
Ice Storm risk nationally:
Other hazard risks in Ohio:
Frequently asked questions
What is the highest ice storm risk county in Ohio?
Montgomery County, OH has the highest ice storm risk in Ohio, with a FEMA National Risk Index score of 96.3 out of 100 (rated "Very High").
How many counties in Ohio are rated Very High for ice storm risk?
2 of 88 scored Ohio counties are rated "Very High" for ice storm risk by FEMA's National Risk Index.
What causes ice storm risk in Ohio?
Ice storm risk covers damaging freezing rain and sleet accumulation, which collapses power lines, trees, and structures. The highest-risk counties cluster in a band from eastern Texas and Arkansas through the Carolinas and New England, where warm Gulf moisture overruns cold arctic air most frequently. Ice storms cause catastrophic and long-lasting power outages. Ice storm and sleet events are reported at forecast-zone level in NOAA Storm Events and are not included in county-level counts.