Montana, 1999
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 1999 was 728 against 621 in 1998.
Counties with the most recorded events
Notable events
| Date | County | Event type | Magnitude | Property damage | Deaths | Injuries |
|---|---|---|---|---|---|---|
| 9 Feb 1999 | Forecast zone | Heavy Snow | — | — | 1 | — |
| 25 Jun 1999 | Custer | Lightning | — | — | 1 | — |
| 17 Jul 1999 | Big Horn | Lightning | — | — | 1 | — |
| 26 Nov 1999 | Forecast zone | Avalanche | — | — | 1 | — |
| 17 Jun 1999 | Gallatin | Lightning | — | — | 1 | — |
| 14 Aug 1999 | Fergus | Tornado | F2 | $4,000,000 | — | 3 |
| 21 Jun 1999 | Sheridan | Thunderstorm Wind | 64 mph | — | — | 1 |
| 29 May 1999 | Dawson | Lightning | — | — | — | 1 |
| 31 Oct 1999 | Sheridan | Wildfire | — | $6,000,000 | — | — |
| 31 Oct 1999 | Roosevelt | Wildfire | — | $5,000,000 | — | — |
| 21 Jul 1999 | Valley | Hail | 4.50 in | $1,500,000 | — | — |
| 31 Oct 1999 | Forecast zone | High Wind | 76 mph | $300,000 | — | — |
| 31 Oct 1999 | Forecast zone | High Wind | 87 mph | $300,000 | — | — |
| 21 Jun 1999 | Valley | Tornado | F1 | $250,000 | — | — |
| 31 Oct 1999 | Forecast zone | High Wind | 82 mph | $200,000 | — | — |
| 31 Oct 1999 | Forecast zone | High Wind | 67 mph | $150,000 | — | — |
| 2 Feb 1999 | Forecast zone | High Wind | 70 mph | $100,000 | — | — |
| 31 Oct 1999 | Forecast zone | High Wind | 87 mph | $100,000 | — | — |
| 17 Mar 1999 | Daniels | Flood | — | $85,000 | — | — |
| 31 Oct 1999 | Forecast zone | High Wind | 66 mph | $80,000 | — | — |
| 15 Dec 1999 | Forecast zone | High Wind | 78 mph | $60,000 | — | — |
| 29 Sep 1999 | Forecast zone | High Wind | 40 mph | $50,000 | — | — |
| 3 Oct 1999 | Forecast zone | High Wind | 81 mph | $50,000 | — | — |
| 21 Jun 1999 | Valley | Thunderstorm Wind | — | $50,000 | — | — |
| 20 Jul 1999 | Custer | Thunderstorm Wind | — | $50,000 | — | — |
| 20 May 1999 | Musselshell | Tornado | F0 | $25,000 | — | — |
| 21 Jul 1999 | Roosevelt | Tornado | F1 | $20,000 | — | — |
| 21 Jun 1999 | Fergus | Tornado | F0 | $3,000 | — | — |
| 7 Jul 1999 | Chouteau | Tornado | F0 | $2,000 | — | — |
| 7 Jul 1999 | Fergus | Tornado | F0 | $2,000 | — | — |
| 14 Aug 1999 | Wheatland | Tornado | F0 | — | — | — |
| 14 Aug 1999 | Garfield | Tornado | F0 | — | — | — |
| 14 Aug 1999 | Fergus | Tornado | F0 | — | — | — |
| 21 Jun 1999 | Phillips | Tornado | F0 | — | — | — |
| 15 Aug 1999 | Rosebud | Tornado | F0 | — | — | — |
| 14 Aug 1999 | Judith Basin | Tornado | F0 | — | — | — |
| 29 Jun 1999 | Madison | Tornado | F0 | — | — | — |
| 30 Jun 1999 | Fergus | Tornado | F0 | — | — | — |
| 15 Aug 1999 | Rosebud | Tornado | F0 | — | — | — |
| 21 Jun 1999 | Valley | Tornado | F0 | — | — | — |
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 1999
| Declared | Number | Type | Incident | Title | Counties |
|---|---|---|---|---|---|
| 26 Jul 1999 | FM-2266 | Fire management assistance | Fire | Fishel Creek Fire Complex | 1 |
Flood insurance claims with a 1999 date of loss
2 NFIP claims, 2 of them paid, for $20,059.
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.