Montana, 2020
The year's recorded storm events, federal disaster declarations and flood insurance claims.
NCEI notes that Storm Data is compiled from a variety of sources including the National Weather Service, other federal, state and local agencies, the media and the public; that property and crop damage figures are estimates; and that some events are recorded by NWS forecast zone rather than by county. FEMA notes that NFIP claim records are redacted and aggregated to protect the privacy of policyholders.
Events by hazard
Includes events recorded by forecast zone. The state's yearly total for 2020 was 1,349 against 1,315 in 2019.
Counties with the most recorded events
Notable events
| Date | County | Event type | Magnitude | Property damage | Deaths | Injuries |
|---|---|---|---|---|---|---|
| 30 Jan 2020 | Forecast zone | Winter Weather | — | — | 2 | 2 |
| 13 Mar 2020 | Broadwater | Winter Storm | — | — | 2 | 1 |
| 1 Jan 2020 | Forecast zone | Avalanche | — | — | 2 | — |
| 31 Jul 2020 | Dawson | Lightning | — | — | 1 | — |
| 6 Aug 2020 | Yellowstone | Thunderstorm Wind | 70 mph | — | — | 2 |
| 31 May 2020 | Flathead | Thunderstorm Wind | 78 mph | $450,000 | — | 1 |
| 13 Mar 2020 | Forecast zone | High Wind | 70 mph | $50,000 | — | 1 |
| 16 Feb 2020 | Forecast zone | Winter Weather | — | — | — | 1 |
| 11 Apr 2020 | Forecast zone | Strong Wind | 49 mph | $1,000,000 | — | — |
| 20 May 2020 | McCone | Thunderstorm Wind | 70 mph | $350,000 | — | — |
| 15 Jan 2020 | Teton | Flood | — | $250,000 | — | — |
| 13 Jun 2020 | Forecast zone | High Wind | 63 mph | $200,000 | — | — |
| 20 May 2020 | McCone | Thunderstorm Wind | 70 mph | $187,000 | — | — |
| 20 May 2020 | McCone | Thunderstorm Wind | 70 mph | $100,000 | — | — |
| 20 May 2020 | McCone | Thunderstorm Wind | 90 mph | $100,000 | — | — |
| 7 Sep 2020 | Forecast zone | High Wind | 75 mph | $100,000 | — | — |
| 13 Mar 2020 | Forecast zone | High Wind | 72 mph | $70,000 | — | — |
| 7 Sep 2020 | Forecast zone | High Wind | 55 mph | $50,000 | — | — |
| 20 May 2020 | Valley | Tornado | EF0 | — | — | — |
| 7 Jul 2020 | Petroleum | Tornado | EF0 | — | — | — |
| 7 Jul 2020 | Petroleum | Tornado | EF0 | — | — | — |
Up to 40 events with deaths, injuries, damage of $50,000 or more, or a tornado rating, ranked by deaths, injuries and damage.
Federal disaster declarations in 2020
| Declared | Number | Type | Incident | Title | Counties |
|---|---|---|---|---|---|
| 5 Sep 2020 | FM-5346 | Fire management assistance | Fire | Bridger Foothills Fire | 1 |
| 3 Sep 2020 | FM-5345 | Fire management assistance | Fire | Snider/Rice Fire Complex | 3 |
| 2 Sep 2020 | FM-5344 | Fire management assistance | Fire | Bobcat Fire | 2 |
| 2 Sep 2020 | FM-5343 | Fire management assistance | Fire | Huff Fire | 1 |
| 2 Aug 2020 | FM-5324 | Fire management assistance | Fire | Falling Star Fire | 2 |
| 31 Mar 2020 | DR-4508 | Major disaster | Biological | Covid-19 Pandemic | 56 |
| 13 Mar 2020 | EM-3516 | Emergency | Biological | Covid-19 | 0 |
| 13 Mar 2020 | EM-3476 | Emergency | Biological | Covid-19 | 56 |
Flood insurance claims with a 2020 date of loss
4 NFIP claims, 2 of them paid, for $55,662.
Sources: NOAA NCEI Storm Events through 30 Jun 2026; OpenFEMA DisasterDeclarationsSummaries v2 (29 Sep 2026); OpenFEMA NfipClaims v3 (8 Sep 2026). Built 30 Sep 2026.