Maine ice storm risk
York County has the highest ice storm risk in Maine, scoring 98.3 out of 100 — rated "Very High" by FEMA's National Risk Index.
| # | County | NRI score | Rating |
|---|---|---|---|
| 1 | York County | 98.3 | Very High |
| 2 | Cumberland County | 98.2 | Very High |
| 3 | Kennebec County | 97 | Very High |
| 4 | Penobscot County | 96.8 | Very High |
| 5 | Androscoggin County | 94.8 | Relatively High |
| 6 | Washington County | 93.3 | Relatively High |
| 7 | Piscataquis County | 92.4 | Relatively High |
| 8 | Oxford County | 91.7 | Relatively High |
| 9 | Hancock County | 91.1 | Relatively High |
| 10 | Lincoln County | 90.2 | Relatively High |
| 11 | Somerset County | 90.2 | Relatively High |
| 12 | Franklin County | 90.1 | Relatively High |
| 13 | Waldo County | 89.8 | Relatively High |
| 14 | Knox County | 89.2 | Relatively High |
| 15 | Sagadahoc County | 88.6 | Relatively High |
| 16 | Aroostook County | 68.5 | Relatively Moderate |
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 Maine:
Frequently asked questions
What is the highest ice storm risk county in Maine?
York County, ME has the highest ice storm risk in Maine, with a FEMA National Risk Index score of 98.3 out of 100 (rated "Very High").
How many counties in Maine are rated Very High for ice storm risk?
4 of 16 scored Maine counties are rated "Very High" for ice storm risk by FEMA's National Risk Index.
What causes ice storm risk in Maine?
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.