Severe Thunderstorm Warning for Custer and Rosebud Counties, 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This alert is no longer in effect.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.
NWS Billings has issued a Severe Thunderstorm Warning for northwestern Custer County and northern Rosebud County in southeastern Montana until 7:15 PM MDT.
Read this weather record in 30 seconds
- 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
A Severe Thunderstorm Warning has been issued by the National Weather Service in Billings MT. The alert is effective from August 17 at 6:25 PM MDT until August 17 at 7:15 PM MDT.
Affected Areas
The warning covers Northwestern Custer County in southeastern Montana and Northern Rosebud County in southeastern Montana. Locations impacted include Angela and Rock Springs.
What You Should Do
Wind damage with this storm will occur before any rain or lightning. Do not wait for the sound of thunder before taking cover. Seek shelter immediately inside a sturdy structure and stay away from windows. Do not drive your vehicle through flooded roadways.
Expected Conditions
At 6:25 PM MDT, a severe thunderstorm was located 36 miles northwest of Miles City, moving southeast at 35 mph. Hazards include 60 mph wind gusts and quarter size hail. Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. Torrential rainfall is also occurring and may lead to flash flooding.
Timeline
The warning is in effect from 6:25 PM MDT to 7:15 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 (1,108 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to August 18, 2026.
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