Alert archive / Montana / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 13, NWS Billings, MT

May 30, 2026Custer County, Powder River County, Montana

NWS Billings, MT issued this severe thunderstorm warning at May 30, 2026, 7:19 PM MDT for Custer County, Powder River County, Montana. It was in force for 41 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: May 30, 2026, 7:19 PM MDT (01:19 UTC)
Expired: May 30, 2026, 8:00 PM MDT
In force: 41 min
Issued by: NWS Billings, MT
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Custer County, MT, Powder River County, MT

The radar

The Billings radar (KBLX), 233 km from the middle of the area, began a volume at 01:19 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The office that day

Everything else NWS Billings, MT issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 30, 6:04 PM MDT	Special Weather Statement	BYZ	Custer	41 min
May 30, 6:09 PM MDT	Special Weather Statement	BYZ	Custer	36 min
May 30, 6:32 PM MDT	Severe Thunderstorm Warning	BYZ	Custer	42 min
May 30, 6:37 PM MDT	Special Weather Statement	BYZ	Powder River	38 min
May 30, 6:40 PM MDT	Severe Thunderstorm Warning	BYZ	Big Horn, Rosebud	50 min
May 30, 6:53 PM MDT	Special Weather Statement	BYZ	Fallon	52 min
May 30, 7:12 PM MDT	Special Weather Statement	BYZ	Custer	48 min
May 30, 6:31 PM MDT	Special Weather Statement	BYZ	Sheridan	44 min
May 30, 10:35 PM MDT	Flash Flood Warning	BYZ	Sheridan	3 hr

Nearby

Severe Thunderstorm Warnings in Montana, 2026 Every severe thunderstorm warning in 2026

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.