Alert archive / Montana / Flash Flood Warnings in 2026

Flash Flood Warning 2, NWS Glasgow, MT

June 27, 2026Richland County, Montana

NWS Glasgow, MT issued this flash flood warning at Jun 27, 2026, 6:13 PM MDT for Richland County, Montana. It was in force for 5 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jun 27, 2026, 6:13 PM MDT (00:13 UTC)
Expired
Jun 27, 2026, 10:43 PM MDT
In force
5 hr
Issued by
NWS Glasgow, MT
Area
Storm-based polygon
Flood severity
None

County Richland County, MT

The radar

The Glasgow radar (KGGW), 160 km from the middle of the area, began a volume at 00:14 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 nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 0.2 hours before the alert went out and 312 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Bismarck Municip, ND at 00:00Z on 2026-06-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1476 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Bismarck Municip, ND at 00:00Z on 2026-06-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 144 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1476 J/kg
Mixed-layer CIN
-38 J/kg
Mixed-layer LCL
953 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
144 m²/s²
0-3 km storm-relative helicity
127 m²/s²
Significant tornado parameter
0.7
Supercell composite
4.9

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 27, 6:05 PM MDTSevere Thunderstorm WarningGGWRichland, Roosevelt55 min
Jun 27, 6:06 PM MDTSevere Thunderstorm WarningGGWDawson, Prairie, Richland, Wibaux54 min
Jun 27, 6:33 PM MDTFlash Flood WarningGGWGarfield4 hr
Jun 27, 6:38 PM MDTSevere Thunderstorm Warning Considerable damage threatGGWRichland, Roosevelt52 min
Jun 27, 6:48 PM MDTSevere Thunderstorm WarningGGWDawson, Richland, Wibaux57 min
Jun 27, 6:52 PM MDTSevere Thunderstorm WarningGGWDawson, Richland, Wibaux53 min
Jun 27, 7:05 PM MDTFlash Flood WarningGGWRoosevelt4 hr
Jun 27, 7:05 PM MDTSevere Thunderstorm WarningGGWRichland, Roosevelt, Sheridan55 min
Jun 27, 7:12 PM MDTSevere Thunderstorm WarningGGWDawson, Garfield, McCone63 min
Jun 27, 7:24 PM MDTSevere Thunderstorm WarningGGWDawson, Richland, Roosevelt, Sheridan, Wibaux66 min
Jun 27, 7:50 PM MDTFlash Flood WarningGGWRichland, Roosevelt3 hr
Jun 27, 7:53 PM MDTFlash Flood WarningGGWDawson, Richland116 min
Jun 27, 8:11 PM MDTSpecial Weather StatementGGWMcCone, Richland64 min
Jun 27, 8:14 PM MDTSevere Thunderstorm Warning Considerable damage threatGGWRoosevelt, Sheridan46 min
Jun 27, 8:19 PM MDTFlash Flood WarningGGWRoosevelt, Sheridan3 hr
Jun 27, 8:22 PM MDTSevere Thunderstorm WarningGGWDaniels, Roosevelt, Sheridan53 min
Jun 27, 8:30 PM MDTFlash Flood WarningGGWDaniels3 hr
Jun 27, 9:32 PM MDTFlash Flood WarningGGWRoosevelt3 hr
Jun 27, 10:55 PM MDTAreal Flood AdvisoryGGWGarfield13 hr
Jun 27, 11:40 PM MDTLake Wind AdvisoryGGWGarfield, McCone, Petroleum, Phillips, Valley22 hr
Jun 28, 7:33 AM MDTAreal Flood AdvisoryGGWPhillips, Valley6 hr
Jun 28, 7:46 AM MDTAreal Flood AdvisoryGGWDaniels10 hr
Jun 28, 11:42 AM MDTAreal Flood AdvisoryGGWGarfield8 hr

Nearby

Flash Flood Warnings in Montana, 2026Every flash flood 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.