Alert archive / Montana / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 71, NWS Glasgow, MT

July 3, 2018Richland County, Wibaux County, Montana

NWS Glasgow, MT issued this severe thunderstorm warning at Jul 3, 2018, 9:23 PM MDT for Richland County, Wibaux County, Montana. It was in force for 37 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 3, 2018, 9:23 PM MDT (03:23 UTC)
Expired: Jul 3, 2018, 10:00 PM MDT
In force: 37 min
Issued by: NWS Glasgow, MT
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Richland County, MT, Wibaux County, MT

The radar

The Glasgow radar (KGGW), 190 km from the middle of the area, began a volume at 03:26 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 3, 8:39 PM MDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Glasgow Intl Airport, MT (KGGW), launched 00:00Z, 3.4 hours before the alert went out and 189 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2670 m above ground
0-6 km bulk shear: 81 kt
0-1 km storm-relative helicity: 41 m²/s²
0-3 km storm-relative helicity: 162 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Glasgow, MT wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 3, 9:02 PM MDT, 21 minutes earlier.

Area forecast discussion, Jul 3, 9:02 PM MDT, 21 minutes before

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In the hours before

Local storm report, Jul 3, 8:25 PM MDT, 58 minutes before

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Local storm report, Jul 3, 8:29 PM MDT, 54 minutes before

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Local storm report, Jul 3, 8:30 PM MDT, 53 minutes before

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Local storm report, Jul 3, 8:31 PM MDT, 52 minutes before

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Special weather statement, Jul 3, 8:54 PM MDT, 29 minutes before

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Local storm report, Jul 3, 9:16 PM MDT, 7 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 3, 7:24 PM MDT	Special Weather Statement	GGW	Garfield	51 min
Jul 3, 7:43 PM MDT	Special Weather Statement	GGW	Dawson	62 min
Jul 3, 7:54 PM MDT	Severe Thunderstorm Warning	GGW	Garfield, McCone, Valley	51 min
Jul 3, 7:57 PM MDT	Severe Thunderstorm Warning	GGW	Dawson, Prairie	63 min
Jul 3, 8:06 PM MDT	Severe Thunderstorm Warning	GGW	McCone, Roosevelt, Valley	54 min
Jul 3, 8:37 PM MDT	Severe Thunderstorm Warning	GGW	Dawson, Richland, Wibaux	53 min
Jul 3, 8:43 PM MDT	Severe Thunderstorm Warning	GGW	Daniels, Garfield, McCone, Roosevelt, Valley	62 min
Jul 3, 8:54 PM MDT	Special Weather Statement	GGW	McCone, Prairie	66 min
Jul 3, 9:30 PM MDT	Special Weather Statement	GGW	Daniels, Roosevelt, Sheridan	60 min
Jul 3, 9:51 PM MDT	Special Weather Statement	GGW	Dawson, Richland, Wibaux	54 min
Jul 3, 10:25 PM MDT	Special Weather Statement	GGW	Daniels, Roosevelt, Sheridan	65 min
Jul 3, 10:41 PM MDT	Special Weather Statement	GGW	Richland, Wibaux	49 min
Jul 4, 3:29 AM MDT	Lake Wind Advisory	GGW	Garfield, McCone, Petroleum, Phillips, Valley	17 hr

Nearby

Severe Thunderstorm Warnings in Montana, 2018 Every severe thunderstorm warning in 2018

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.