Maryland hail risk
Montgomery County has the highest hail risk in Maryland, scoring 94.5 out of 100 — rated "Relatively High" by FEMA's National Risk Index. NOAA has recorded 388 hail events across Maryland over the past decade.
| # | County | NRI score | Rating |
NOAA events 2016–2026 |
|---|---|---|---|---|
| 1 | Montgomery County | 94.5 | Relatively High | 55 |
| 2 | Prince George's County | 90.4 | Relatively Moderate | 16 |
| 3 | Baltimore | 88.2 | Relatively Moderate | 6 |
| 4 | Baltimore County | 86 | Relatively Moderate | 42 |
| 5 | Frederick County | 74.9 | Relatively Moderate | 22 |
| 6 | Anne Arundel County | 74.1 | Relatively Moderate | 26 |
| 7 | Howard County | 71.9 | Relatively Low | 13 |
| 8 | Washington County | 66.9 | Relatively Low | 30 |
| 9 | Allegany County | 64.6 | Relatively Low | 14 |
| 10 | Carroll County | 57.7 | Relatively Low | 16 |
| 11 | Garrett County | 48.3 | Relatively Low | 8 |
| 12 | Charles County | 43.3 | Relatively Low | 25 |
| 13 | Caroline County | 34.6 | Relatively Low | 3 |
| 14 | St. Mary's County | 34.3 | Relatively Low | 27 |
| 15 | Cecil County | 32.2 | Very Low | 12 |
| 16 | Queen Anne's County | 29.9 | Very Low | 10 |
| 17 | Calvert County | 27.8 | Very Low | 14 |
| 18 | Kent County | 25.7 | Very Low | 3 |
| 19 | Wicomico County | 23.8 | Very Low | 4 |
| 20 | Somerset County | 22.8 | Very Low | 4 |
| 21 | Talbot County | 16.6 | Very Low | 5 |
| 22 | Worcester County | 11.9 | Very Low | 4 |
| 23 | Harford County | 10.2 | Very Low | 15 |
| 24 | Dorchester County | 8.4 | Very Low | 14 |
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.
Hail risk nationally:
Other hazard risks in Maryland:
Frequently asked questions
What is the highest hail risk county in Maryland?
Montgomery County, MD has the highest hail risk in Maryland, with a FEMA National Risk Index score of 94.5 out of 100 (rated "Relatively High").
What causes hail risk in Maryland?
Hail risk reflects expected annual losses from damaging hailstones to structures, vehicles, and crops. High scores cluster in the central plains and Front Range — a corridor sometimes called "Hail Alley" — where large-diameter hail is most frequent. Hail causes over $10 billion in US property damage in active years, much of it to roofs, vehicles, and crops.