Severe Thunderstorm Warning Issued for Cascade, Chouteau, Teton Counties MT
This alert is no longer in effect.
NOAA issued it on May 21, 2026, 3 months 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 Great Falls has issued a Severe Thunderstorm Warning for parts of north central and central Montana until 3:30 PM MDT.
Read this weather record in 30 seconds
- Record type
- Severe Thunderstorm Warning
- Affected area
- Cascade, Chouteau, Teton Counties, Montana
- Issued
- May 21, 2026
- Issuing authority
- NWS Great Falls 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 3 months ago; use the issuing agency's live warning service for current conditions in Cascade, Chouteau, Teton Counties, Montana.
Alert Details
A Severe Thunderstorm Warning has been issued by the National Weather Service in Great Falls MT. The alert is effective from May 13, 2026 at 2:50 PM MDT until May 13, 2026 at 3:30 PM MDT.
Affected Areas
The warning covers Southeastern Teton County, Southwestern Chouteau County, and Northwestern Cascade County in Montana. Locations impacted include Great Falls, Cascade, Black Eagle, Carter, Floweree, Portage, Malmstrom Afb, Eden, Stockett, Tracy, Vaughn, First Peoples Buffalo Jump State Park, Sun River, Centerville, Ulm, and Sand Coulee.
What You Should Do
For your protection move to an interior room on the lowest floor of a building.
Expected Conditions
At 2:49 PM MDT, a severe thunderstorm was located 8 miles northeast of Cascade, moving northeast at 55 mph. Hazards include 70 mph wind gusts and hail up to 0.75 inches. Expect considerable tree damage with damage likely to mobile homes, roofs, and outbuildings.
Timeline
The warning is in effect until 3:30 PM MDT on May 13, 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 (1,031 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to May 21, 2026.
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