Petroleum County weather alerts
There are no active weather alerts for Petroleum County, MT right now.
Since 2016 the National Weather Service has issued about 540 alerts that included Petroleum County, roughly 54 a year. The most common is the severe thunderstorm warning (119 from 2016 to 2025). The last tornado warning was issued on July 7, 2020. 8 tornadoes have touched down in the county since 1950.
Updated from the National Weather Service · lists refresh hourly; the live map loads current alerts directly from the NWS
No warnings, watches or advisories include Petroleum County at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring Garfield County, Musselshell County, Phillips County, Fergus County.
Petroleum County alert history
Alert events that included Petroleum County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Severe Thunderstorm Warning | 119 | 24 | September 7, 2026 |
| Winter Weather Advisory | 90 | 2 | March 9, 2026 |
| Severe Thunderstorm Watch | 53 | 6 | August 23, 2026 |
| Cold Weather Advisory | 47 | 1 | January 22, 2026 |
| High Wind Warning | 45 | 7 | May 13, 2026 |
| High Wind Watch | 35 | 6 | May 13, 2026 |
| Winter Storm Watch | 30 | 1 | March 13, 2026 |
| Winter Storm Warning | 30 | 1 | March 13, 2026 |
| Heat Advisory | 29 | 2 | July 13, 2026 |
| Flood Advisory | 14 | 0 | February 24, 2025 |
| Flood Warning | 9 | 0 | June 9, 2023 |
| Flood Watch | 9 | 2 | September 19, 2026 |
| Extreme Cold Warning | 7 | 0 | February 17, 2025 |
| Dense Fog Advisory | 7 | 0 | February 4, 2024 |
| Extreme Heat Warning | 6 | 3 | August 1, 2026 |
| Extreme Heat Watch | 6 | 3 | August 1, 2026 |
| Tornado Watch | 1 | 0 | June 28, 2019 |
| Tornado Warning | 1 | 0 | July 7, 2020 |
| Flash Flood Warning | 1 | 1 | July 15, 2026 |
| Extreme Cold Watch | 1 | 0 | February 17, 2025 |
Tornado history in Petroleum County
8 tornadoes have been recorded in Petroleum County since 1950. That ranks 22 of 56 counties in Montana. The most recent was on July 7, 2020 (rated EF0).
Strongest tornadoes in Petroleum County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| August 7, 1962 | F2 | Petroleum County | 2 mi | 10 yd | 0 | 0 |
| July 8, 2002 | F0 | Petroleum County | 2 mi | 50 yd | 0 | 0 |
| June 28, 2005 | F0 | Petroleum County | 2 mi | 10 yd | 0 | 0 |
| July 7, 2020 | EF0 | Petroleum County | 0.2 mi | 50 yd | 0 | 0 |
| July 7, 2020 | EF0 | Petroleum County | 0.1 mi | 20 yd | 0 | 0 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| July 7, 2020 | EF0 | Petroleum County | 0.2 mi | 50 yd | 0 | 0 |
| July 7, 2020 | EF0 | Petroleum County | 0.1 mi | 20 yd | 0 | 0 |
| June 28, 2005 | F0 | Petroleum County | 2 mi | 10 yd | 0 | 0 |
| July 8, 2002 | F0 | Petroleum County | 2 mi | 50 yd | 0 | 0 |
| June 22, 2002 | F0 | Petroleum County | 0.1 mi | 50 yd | 0 | 0 |
About Petroleum County
- Population: 525 (2024 estimate)
- State: Montana
- NOAA Weather Radio SAME code: 030069 (how to use it)