Alert archive / Montana / Tornado Warnings in 2024

Tornado Warning 7, NWS Glasgow, MT

September 17, 2024Daniels County, Roosevelt County, Montana

NWS Glasgow, MT issued this tornado warning at Sep 17, 2024, 5:41 PM MDT for Daniels County, Roosevelt County, Montana. It was in force for 34 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 17, 2024, 5:41 PM MDT (23:41 UTC)
Expired
Sep 17, 2024, 6:15 PM MDT
In force
34 min
Issued by
NWS Glasgow, MT
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

Counties Daniels County, MT, Roosevelt County, MT

The radar

The Glasgow radar (KGGW), 106 km from the middle of the area, began a volume at 23:44 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

Great_falls, MT (KTFX), launched 12:00Z, 11.7 hours before the alert went out and 413 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, Great_falls, MT at 12:00Z on 2024-09-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Great_falls, MT at 12:00Z on 2024-09-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -17 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1547 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
-17 m²/s²
0-3 km storm-relative helicity
35 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 17, 4:44 PM MDTSpecial Weather StatementGGWDawson61 min
Sep 17, 4:57 PM MDTSevere Thunderstorm WarningGGWDawson, Richland63 min
Sep 17, 5:16 PM MDTSevere Thunderstorm WarningGGWDaniels, Roosevelt, Sheridan59 min
Sep 17, 5:44 PM MDTSevere Thunderstorm WarningGGWDawson, McCone, Richland, Roosevelt61 min
Sep 17, 5:56 PM MDTSevere Thunderstorm Warning Considerable damage threatGGWDawson, McCone, Richland37 min

Nearby

Tornado Warnings in Montana, 2024Every tornado warning in 2024Tornadoes in 2024

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.