Alert archive / Montana / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 45, NWS Glasgow, MT

July 14, 2003Prairie County, Montana

NWS Glasgow, MT issued this severe thunderstorm warning at Jul 14, 2003, 1:40 AM MDT for Prairie County, Montana. It was in force for 35 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 14, 2003, 1:40 AM MDT (07:40 UTC)
Expired: Jul 14, 2003, 2:15 AM MDT
In force: 35 min
Issued by: NWS Glasgow, MT
Area: Counties, with a storm outline in the text

County Prairie County, MT

The radar

The Glasgow radar (KGGW), 176 km from the middle of the area, began a volume at 07:41 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, 7.7 hours before the alert went out and 356 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: 2630 J/kg
Mixed-layer CIN: -115 J/kg
Mixed-layer LCL: 2407 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 151 m²/s²
0-3 km storm-relative helicity: 195 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.5

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 13, 8:50 PM MDT, 4 hours 50 minutes earlier.

Area forecast discussion, Jul 13, 8:50 PM MDT, 4 hours 50 minutes before

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Hazardous weather outlook, Jul 13, 9:48 PM MDT, 3 hours 52 minutes before

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In the hours before

Local storm report, Jul 13, 7:57 PM MDT, 5 hours 43 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 13, 6:12 PM MDT	Severe Thunderstorm Warning	GGW	Phillips, Valley	63 min
Jul 13, 6:53 PM MDT	Severe Thunderstorm Warning	GGW	Valley	67 min
Jul 13, 6:59 PM MDT	Severe Thunderstorm Warning	GGW	Garfield, McCone, Valley	61 min

Nearby

Severe Thunderstorm Warnings in Montana, 2003 Every severe thunderstorm warning in 2003

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.