Montana, 2023
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 2023 was 1,124 against 1,901 in 2022.
Counties with the most recorded events
Notable events
| Date | County | Event type | Magnitude | Property damage | Deaths | Injuries |
|---|---|---|---|---|---|---|
| 16 Dec 2023 | Forecast zone | Freezing Fog | — | $70,000 | 2 | 5 |
| 17 May 2023 | Cascade | Flood | — | $60,000 | 2 | — |
| 1 Dec 2023 | Forecast zone | Winter Weather | — | $80,000 | 1 | 3 |
| 22 Dec 2023 | Forecast zone | Freezing Fog | — | $50,000 | 1 | 2 |
| 23 Nov 2023 | Forecast zone | Winter Weather | — | — | 1 | 2 |
| 25 Oct 2023 | Forecast zone | Winter Weather | — | — | 1 | 2 |
| 22 Jan 2023 | Forecast zone | Winter Weather | — | — | 1 | — |
| 28 Jan 2023 | Forecast zone | Winter Weather | — | — | 1 | — |
| 2 Mar 2023 | Forecast zone | Winter Weather | — | — | 1 | — |
| 21 Feb 2023 | Forecast zone | Winter Storm | — | — | — | 6 |
| 11 Jun 2023 | Lewis and Clark | Lightning | — | — | — | 2 |
| 12 Apr 2023 | Hill | Flood | — | $2,000,000 | — | — |
| 2 Jun 2023 | Yellowstone | Flash Flood | — | $1,600,000 | — | — |
| 10 Apr 2023 | Blaine | Flood | — | $1,000,000 | — | — |
| 10 Apr 2023 | Gallatin | Flood | — | $1,000,000 | — | — |
| 30 Jul 2023 | Blaine | Hail | 2.00 in | $1,000,000 | — | — |
| 30 Jul 2023 | Forecast zone | Wildfire | — | $300,000 | — | — |
| 7 Jun 2023 | Fergus | Flash Flood | — | $200,000 | — | — |
| 14 Mar 2023 | Forecast zone | Winter Storm | — | $150,000 | — | — |
| 27 Jun 2023 | Jefferson | Flash Flood | — | $100,000 | — | — |
| 10 Jun 2023 | Broadwater | Flash Flood | — | $100,000 | — | — |
| 10 Apr 2023 | Beaverhead | Flood | — | $100,000 | — | — |
| 9 Apr 2023 | Lewis and Clark | Flood | — | $100,000 | — | — |
| 5 Jun 2023 | Cascade | Flash Flood | — | $50,000 | — | — |
| 30 Jul 2023 | Ravalli | Lightning | — | $70,000 | — | — |
| 14 Mar 2023 | Forecast zone | Winter Storm | — | $50,000 | — | — |
| 8 Jun 2023 | Teton | Debris Flow | — | $50,000 | — | — |
| 8 Jun 2023 | Glacier | Debris Flow | — | $50,000 | — | — |
| 7 Apr 2023 | Liberty | Flood | — | $50,000 | — | — |
| 1 Dec 2023 | Forecast zone | Winter Weather | — | $50,000 | — | — |
| 22 Dec 2023 | Forecast zone | Freezing Fog | — | $50,000 | — | — |
| 9 May 2023 | Lake | Tornado | EF0 | $2,000 | — | — |
| 10 Jun 2023 | Hill | Tornado | EF unrated | — | — | — |
| 1 Jun 2023 | Daniels | Tornado | EF unrated | — | — | — |
| 9 Jun 2023 | Valley | Tornado | EF unrated | — | — | — |
| 6 Aug 2023 | Jefferson | Tornado | EF unrated | — | — | — |
| 6 Aug 2023 | Beaverhead | 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 2023
| Declared | Number | Type | Incident | Title | Counties |
|---|---|---|---|---|---|
| 11 Oct 2023 | DR-4745 | Major disaster | Flood | Flooding | 10 |
| 19 Aug 2023 | FM-5480 | Fire management assistance | Fire | River Road East Fire | 1 |
| 12 Aug 2023 | DR-4726 | Major disaster | Flood | Flooding | 7 |
Flood insurance claims with a 2023 date of loss
14 NFIP claims, 8 of them paid, for $126,142.
Sources: NOAA NCEI Storm Events through 30 Jun 2026; OpenFEMA DisasterDeclarationsSummaries v2 (1 Oct 2026); OpenFEMA NfipClaims v3 (8 Sep 2026). Built 1 Oct 2026.