Alert archive / Montana / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 135, NWS Glasgow, MT

July 31, 2016Daniels County, Sheridan County, Valley County, Montana

NWS Glasgow, MT issued this severe thunderstorm warning at Jul 31, 2016, 5:15 PM MDT for Daniels County, Sheridan County, Valley County, Montana. It was in force for 60 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
Jul 31, 2016, 5:15 PM MDT (23:15 UTC)
Expired
Jul 31, 2016, 6:15 PM MDT
In force
60 min
Issued by
NWS Glasgow, MT
Area
Storm-based polygon
Hail
1.5 in
Wind
60.0 mph

Counties Daniels County, MT, Sheridan County, MT, Valley County, MT

The radar

The Glasgow radar (KGGW), 90 km from the middle of the area, began a volume at 23:17 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, 11.3 hours before the alert went out and 395 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 2016-07-31Temperature 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 2016-07-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 2 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
1341 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
2 m²/s²
0-3 km storm-relative helicity
7 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
Jul 30, 6:09 PM MDTSpecial Weather StatementGGW66 min
Jul 30, 6:21 PM MDTSevere Thunderstorm WarningGGWPhillips, Valley54 min
Jul 30, 6:51 PM MDTSevere Thunderstorm WarningGGWPhillips, Valley54 min
Jul 30, 7:15 PM MDTSevere Thunderstorm WarningGGWDaniels, Valley35 min
Jul 30, 7:41 PM MDTSevere Thunderstorm WarningGGWValley64 min
Jul 30, 8:12 PM MDTSevere Thunderstorm WarningGGWPhillips, Valley33 min
Jul 30, 8:38 PM MDTSevere Thunderstorm WarningGGWGarfield, McCone, Valley52 min
Jul 30, 8:53 PM MDTSpecial Weather StatementGGW67 min
Jul 30, 9:07 PM MDTSpecial Weather StatementGGWValley53 min
Jul 30, 9:18 PM MDTSevere Thunderstorm WarningGGWGarfield, Valley57 min
Jul 30, 9:24 PM MDTSevere Thunderstorm WarningGGWGarfield, McCone, Valley36 min
Jul 30, 9:43 PM MDTSpecial Weather StatementGGWValley62 min
Jul 30, 9:53 PM MDTSevere Thunderstorm WarningGGWMcCone67 min
Jul 30, 10:10 PM MDTSevere Thunderstorm WarningGGWGarfield, McCone, Valley35 min
Jul 30, 10:38 PM MDTSpecial Weather StatementGGWMcCone67 min
Jul 30, 10:45 PM MDTSpecial Weather StatementGGWDawson60 min
Jul 30, 11:09 PM MDTSevere Thunderstorm WarningGGWDawson, McCone, Prairie30 min
Jul 31, 12:10 AM MDTSpecial Weather StatementGGWDawson65 min
Jul 31, 5:05 PM MDTSpecial Weather StatementGGWDaniels55 min

Nearby

Severe Thunderstorm Warnings in Montana, 2016Every severe thunderstorm warning in 2016

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.