05/13/2026
⚠️ THIS ALERT IS NO LONGER ACTIVE OR HAS BEEN SUPERSEDED BY ANOTHER ALERT ⚠️
Severe Thunderstorm Warning issued May 13 at 5:22PM MDT until May 13 at 6:00PM MDT by NWS Great Falls MT
SUMMARY:
--------
SVRTFX
The National Weather Service in Great Falls has issued a
* Severe Thunderstorm Warning for...
Southeastern Fergus County in central Montana...
* Until 600 PM MDT.
* At 522 PM MDT, a severe thunderstorm was located 21 miles southwest
of Grass Range, or 26 miles southeast of Lewistown, moving
northeast at 60 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Grass Range, Roy, Fergus, Valentine, and Forestgrove.
AFFECTS: Fergus, MT
INSTRUCTION: For your protection move to an interior room on the lowest floor of a
building.
URL TO CAMPAIGN DETAILS (WITH UP-TO-DATE WEATHER ALERT DETAILS):
https://hrpow.us/V2PfJr5
URGENCY: Immediate
SEVERITY: Severe
CERTAINTY: Observed
EFFECTIVE DATE: 5/13/26 5:22 PM MST
EXPIRATION DATE: 5/13/26 6:00 PM MST
FULL ALERT TEXT:
----------------
SVRTFX
The National Weather Service in Great Falls has issued a
* Severe Thunderstorm Warning for...
Southeastern Fergus County in central Montana...
* Until 600 PM MDT.
* At 522 PM MDT, a severe thunderstorm was located 21 miles southwest
of Grass Range, or 26 miles southeast of Lewistown, moving
northeast at 60 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Grass Range, Roy, Fergus, Valentine, and Forestgrove.
See the full message w/ attachments at:
https://hrpow.us/V2PfJr5