Severe Thunderstorm Warning Issued for Northwestern Custer County, MT
This alert is no longer in effect.
NOAA issued it on August 18, 2026, 6 days ago. Warnings of this kind stay in effect for hours to a few days, so this page is a historical record of what was issued, not a current warning. For conditions where you are right now, check weather.gov (US), weather.gc.ca (Canada), the Met Office (UK), or the Bureau of Meteorology (Australia).
Areazine synthesizes this NWS weather alert directly from NOAA's official public data feed. See our methodology for full source attribution and refresh cadence.
A Severe Thunderstorm Warning is in effect for northwestern Custer County in southeastern Montana until 7:45 PM MDT on August 17.
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- Record type
- Severe Thunderstorm Warning
- Affected area
- southeastern Montana
- Issued
- August 18, 2026
- Issuing authority
- NWS Billings MT
Storm notices can cover different combinations of wind, hail, lightning, and rainfall. Use the original notice for the hazards and boundaries attached to this specific record.
Record status: historical. It was issued 6 days ago; use the issuing agency's live warning service for current conditions in southeastern Montana.
Alert Details
The National Weather Service in Billings MT has issued a Severe Thunderstorm Warning for northwestern Custer County in southeastern Montana. The alert is effective from 7:03 PM MDT until 7:45 PM MDT on August 17, 2026.
Affected Areas
Northwestern Custer County in southeastern Montana. Locations impacted include Strawberry Hill Recreation Area, Matthews Recreation Area, and Locate. The storm was located 20 miles northeast of Miles City at 7:03 PM MDT.
What You Should Do
Seek shelter inside a well-built structure and stay away from windows. This storm is capable of producing damaging winds and large hail. Wind damage with this storm may occur before any rain or lightning. Do not wait for the sound of thunder before taking cover. Torrential rainfall is also occurring with this storm and may lead to flash flooding. Do not drive your vehicle through flooded roadways.
Expected Conditions
At 7:03 PM MDT, a severe thunderstorm was located 20 miles northeast of Miles City, moving southeast at 35 mph. Hazards include 60 mph wind gusts and quarter size hail (1.00 inch). Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees.
Timeline
The warning is effective from 7:03 PM MDT until 7:45 PM MDT on August 17, 2026.
Original source: NOAA Official Notice ↗
Related Weather Alerts
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Two Areazine-derived peer sets for this NWS weather alert: nearest notices by body length and by same severity near the same agency date. Peers come from other categories so they are not the same-feed Related list above.
Similar body length
Nearest notices by article body length (1,287 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to August 18, 2026.
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