Maryland ice storm risk
Prince George's County has the highest ice storm risk in Maryland, scoring 80.6 out of 100 — rated "Relatively Moderate" by FEMA's National Risk Index.
| # | County | NRI score | Rating |
|---|---|---|---|
| 1 | Prince George's County | 80.6 | Relatively Moderate |
| 2 | Baltimore | 76.5 | Relatively Moderate |
| 3 | Montgomery County | 70.4 | Relatively Moderate |
| 4 | Baltimore County | 69.1 | Relatively Moderate |
| 5 | Anne Arundel County | 67.4 | Relatively Moderate |
| 6 | Cecil County | 66.4 | Relatively Moderate |
| 7 | Wicomico County | 60.6 | Relatively Moderate |
| 8 | Howard County | 59.2 | Relatively Low |
| 9 | Worcester County | 57.5 | Relatively Low |
| 10 | Harford County | 55.5 | Relatively Low |
| 11 | Frederick County | 53.8 | Relatively Low |
| 12 | St. Mary's County | 53.8 | Relatively Low |
| 13 | Somerset County | 46.4 | Relatively Low |
| 14 | Dorchester County | 45.7 | Relatively Low |
| 15 | Talbot County | 43.5 | Relatively Low |
| 16 | Allegany County | 39.9 | Relatively Low |
| 17 | Calvert County | 39.6 | Relatively Low |
| 18 | Charles County | 39.4 | Relatively Low |
| 19 | Caroline County | 38.3 | Relatively Low |
| 20 | Queen Anne's County | 37 | Relatively Low |
| 21 | Kent County | 33.6 | Relatively Low |
| 22 | Carroll County | 31 | Relatively Low |
| 23 | Washington County | 30.7 | Relatively Low |
| 24 | Garrett County | 20.2 | 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 Maryland:
Frequently asked questions
What is the highest ice storm risk county in Maryland?
Prince George's County, MD has the highest ice storm risk in Maryland, with a FEMA National Risk Index score of 80.6 out of 100 (rated "Relatively Moderate").
What causes ice storm risk in Maryland?
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.