Anchorage, AK
Local storm history & FEMA National Risk Index data
Anchorage is rated Relatively High for overall natural hazard risk — higher risk than most US counties — based on FEMA's National Risk Index for Anchorage Municipality, AK. The county's highest-rated hazards are earthquake, landslide, and winter weather.
Storm events near Anchorage
NOAA-recorded tornado, hail, and flood events within 25 miles of Anchorage's center, 2016–2026 — the only hazards NOAA reports with exact coordinates, so these counts are specific to Anchorage itself, not the whole county.
County-wide hazard risk
Every other hazard FEMA and NOAA track — including drought — is only scored at the county level. These are Anchorage Municipality's FEMA National Risk Index scores, covering Anchorage along with the rest of the county, not a Anchorage-specific figure.
| Hazard | NRI score | Rating |
|---|---|---|
| Wildfire | 78.6 | Relatively Low |
| Inland Flooding | 0.2 | Very Low |
| Coastal Flooding | 28 | Very Low |
| Earthquake | 99.5 | Relatively High |
| Heat Wave | — | Insufficient Data |
| Tornado | 0.4 | Very Low |
| Avalanche | 97.1 | Very High |
| Cold Wave | 27.9 | Relatively Low |
| Drought | 0 | No Rating |
| Hail | 7.2 | Very Low |
| Hurricane | — | Not Applicable |
| Ice Storm | 22.5 | Very Low |
| Landslide | 98.9 | Relatively High |
| Lightning | 38.6 | Relatively Low |
| Strong Wind | 0 | No Rating |
| Tsunami | 53.8 | Relatively Low |
| Volcanic Activity | 87.3 | Relatively Low |
| Winter Weather | 98.8 | Very High |
Source: FEMA National Risk Index v1.20.0, December 2025. See the methodology page for definitions, or the full Anchorage Municipality risk profile for disaster declarations, social vulnerability, and climate projection data.
More on Anchorage Municipality:
Frequently asked questions
What natural hazards is Anchorage, AK at risk of?
Anchorage is rated Relatively High for overall natural hazard risk by FEMA's National Risk Index — higher risk than most US counties. The highest-rated hazards for Anchorage Municipality, where Anchorage is located, are earthquake, landslide, and winter weather.
What is Anchorage's biggest natural hazard risk?
Earthquake is the highest-rated hazard for Anchorage Municipality, where Anchorage is located, scoring 99.5 out of 100 on FEMA's National Risk Index (rated "Relatively High").
Is Anchorage a high-risk area for natural disasters?
Yes — Anchorage carries higher risk than most US counties for overall natural hazard risk, per FEMA's National Risk Index rating of "Relatively High" for Anchorage Municipality.
Has Anchorage had tornadoes, hail, or flooding?
NOAA has recorded 1 tornado, 10 inland flooding events within 25 miles of Anchorage since 2016.