Alaska winter weather risk
Anchorage Municipality has the highest winter weather risk in Alaska, scoring 98.8 out of 100 — rated "Very High" by FEMA's National Risk Index.
| # | County | NRI score | Rating |
NOAA events 2016–2026 |
|---|---|---|---|---|
| 1 | Anchorage Municipality | 98.8 | Very High | 0 |
| 2 | Fairbanks North Star Borough | 97.5 | Very High | 0 |
| 3 | Kenai Peninsula Borough | 93.9 | Relatively High | 0 |
| 4 | Matanuska-Susitna Borough | 93.1 | Relatively High | 0 |
| 5 | Juneau City and Borough | 90.1 | Relatively High | 0 |
| 6 | Bethel Census Area | 89.7 | Relatively High | 0 |
| 7 | Nome Census Area | 88.2 | Relatively High | 0 |
| 8 | Kusilvak Census Area | 84.9 | Relatively Moderate | 0 |
| 9 | North Slope Borough | 82 | Relatively Moderate | 0 |
| 10 | Yukon-Koyukuk Census Area | 79.6 | Relatively Moderate | 0 |
| 11 | Northwest Arctic Borough | 78.6 | Relatively Moderate | 0 |
| 12 | Southeast Fairbanks Census Area | 68.9 | Relatively Moderate | 0 |
| 13 | Dillingham Census Area | 61.5 | Relatively Moderate | 0 |
| 14 | Ketchikan Gateway Borough | 53.1 | Relatively Low | 0 |
| 15 | Haines Borough | 50.3 | Relatively Low | 0 |
| 16 | Kodiak Island Borough | 38 | Relatively Low | 0 |
| 17 | Sitka City and Borough | 35.7 | Relatively Low | 0 |
| 18 | Skagway Municipality | 35.7 | Relatively Low | 0 |
| 19 | Hoonah-Angoon Census Area | 35.5 | Relatively Low | 0 |
| 20 | Prince of Wales-Hyder Census Area | 33.5 | Relatively Low | 0 |
| 21 | Petersburg Borough | 30.9 | Relatively Low | 0 |
| 22 | Chugach Census Area | 30.6 | Relatively Low | 0 |
| 23 | Lake and Peninsula Borough | 30.5 | Relatively Low | 0 |
| 24 | Copper River Census Area | 27.6 | Relatively Low | 0 |
| 25 | Denali Borough | 26.1 | Relatively Low | 0 |
| 26 | Wrangell City and Borough | 22.5 | Very Low | 0 |
| 27 | Aleutians East Borough | 22.3 | Very Low | 0 |
| 28 | Bristol Bay Borough | 19.7 | Very Low | 0 |
| 29 | Aleutians West Census Area | 17.9 | Very Low | 0 |
| 30 | Yakutat City and Borough | 17.6 | Very Low | 0 |
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.
Winter Weather risk nationally:
Other hazard risks in Alaska:
Frequently asked questions
What is the highest winter weather risk county in Alaska?
Anchorage Municipality, AK has the highest winter weather risk in Alaska, with a FEMA National Risk Index score of 98.8 out of 100 (rated "Very High").
How many counties in Alaska are rated Very High for winter weather risk?
2 of 30 scored Alaska counties are rated "Very High" for winter weather risk by FEMA's National Risk Index.
What causes winter weather risk in Alaska?
Winter weather risk captures expected losses from heavy snow, blizzards, and mixed precipitation. Highest scores appear in the Great Lakes snowbelt, northern Rockies, and interior Northeast, where lake-effect and orographic snowfall is frequent. Winter weather impacts transportation networks, utilities, agriculture, and population health.