Alert archive / Colorado / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 39, NWS Grand Junction, CO

September 18, 2026Moffat County, Colorado

NWS Grand Junction, CO issued this severe thunderstorm warning at Sep 18, 2026, 5:43 PM MDT for Moffat County, Colorado. It was in force for 32 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
Sep 18, 2026, 5:43 PM MDT (23:43 UTC)
Expired
Sep 18, 2026, 6:15 PM MDT
In force
32 min
Issued by
NWS Grand Junction, CO
Area
Storm-based polygon
Hail
1.0 in
Wind
50.0 mph

County Moffat County, CO

The radar

The Grand Junction radar (KGJX), 173 km from the middle of the area, began a volume at 23:45 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 Grand Junction, CO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 18, 1:33 PM MDTSpecial Weather StatementGJT27 min
Sep 18, 2:29 PM MDTSpecial Weather StatementGJTRoutt31 min
Sep 18, 4:13 PM MDTFlash Flood Warning Considerable damage threatGJTMesa3 hr
Sep 18, 4:41 PM MDTSevere Thunderstorm WarningGJTMoffat, Rio Blanco34 min
Sep 18, 4:52 PM MDTFlash Flood Warning Considerable damage threatGJTMoffat, Rio Blanco5 hr
Sep 18, 4:55 PM MDTSevere Thunderstorm WarningGJTGarfield, Rio Blanco35 min
Sep 18, 5:15 PM MDTSevere Thunderstorm WarningGJTMoffat, Rio Blanco30 min
Sep 18, 5:29 PM MDTSpecial Weather StatementGJTRio Blanco31 min
Sep 18, 12:39 PM MDTSpecial Weather StatementGJTUintah36 min
Sep 18, 2:31 PM MDTSpecial Weather StatementGJTGrand29 min
Sep 18, 2:58 PM MDTSevere Thunderstorm WarningGJTGrand32 min
Sep 18, 3:16 PM MDTSpecial Weather StatementGJTUintah29 min
Sep 18, 3:24 PM MDTSevere Thunderstorm WarningGJTUintah36 min
Sep 18, 3:58 PM MDTSevere Thunderstorm WarningGJTUintah47 min

Nearby

Severe Thunderstorm Warnings in Colorado, 2026Every 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.