Montana, 1986
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 1986 was 27 against 32 in 1985.
Counties with the most recorded events
Notable events
| Date | County | Event type | Magnitude | Property damage | Deaths | Injuries |
|---|---|---|---|---|---|---|
| 4 May 1986 | Musselshell | Tornado | F2 | $2,500 | — | — |
| 11 May 1986 | Carter | Tornado | F1 | $2,500 | — | — |
| 6 Jun 1986 | Hill | Tornado | F0 | — | — | — |
| 29 Jun 1986 | Teton | 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 1986
| Declared | Number | Type | Incident | Title | Counties |
|---|---|---|---|---|---|
| 14 Oct 1986 | DR-777 | Major disaster | Flood | Severe Storms & Flooding | 7 |
| 15 Mar 1986 | DR-761 | Major disaster | Flood | Heavy Rains, Landslides & Flooding | 16 |
Flood insurance claims with a 1986 date of loss
44 NFIP claims, 31 of them paid, for $155,309.
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.