Alert archive / Montana / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 19, NWS Glasgow, MT

June 22, 2002Roosevelt County, Montana

NWS Glasgow, MT issued this severe thunderstorm warning at Jun 22, 2002, 3:59 AM MDT for Roosevelt County, Montana. It was in force for 61 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Jun 22, 2002, 3:59 AM MDT (09:59 UTC)
Expired
Jun 22, 2002, 5:00 AM MDT
In force
61 min
Issued by
NWS Glasgow, MT
Area
Whole counties

County Roosevelt County, MT

What was reported inside it

TimeReportWhereRemark
Jun 22, 4:00 AM MDTHail 1Culbertson, MT

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Glasgow Intl Airport, MT (KGGW), launched 00:00Z, 10.0 hours before the alert went out and 118 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, Glasgow Intl Airport, MT at 00:00Z on 2002-06-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1320 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, Glasgow Intl Airport, MT at 00:00Z on 2002-06-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -3 square meters per square second.19395878Sfc1 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
1320 J/kg
Mixed-layer CIN
-25 J/kg
Mixed-layer LCL
1902 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
-3 m²/s²
0-3 km storm-relative helicity
116 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.1

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 Jun 22, 2:03 AM MDT, 1 hour 56 minutes earlier.

Area forecast discussion, Jun 22, 2:03 AM MDT, 1 hour 56 minutes before
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In the hours before

Local storm report, Jun 22, 1:49 AM MDT, 2 hours 10 minutes before
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Local storm report, Jun 22, 3:33 AM MDT, 26 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jun 21, 9:27 PM MDTSevere Thunderstorm WarningGGWGarfield63 min
Jun 21, 10:04 PM MDTSevere Thunderstorm WarningGGWValley56 min
Jun 21, 10:53 PM MDTSevere Thunderstorm WarningGGWMcCone67 min
Jun 22, 12:31 AM MDTSevere Thunderstorm WarningGGWRichland, Roosevelt59 min
Jun 22, 2:01 AM MDTSevere Thunderstorm WarningGGWDawson59 min
Jun 22, 2:08 AM MDTSevere Thunderstorm WarningGGWWibaux67 min
Jun 22, 1:14 PM MDTSevere Thunderstorm WarningGGWGarfield61 min
Jun 22, 2:12 PM MDTSevere Thunderstorm WarningGGWPetroleum48 min
Jun 22, 2:26 PM MDTSevere Thunderstorm WarningGGWGarfield64 min
Jun 22, 2:29 PM MDTSevere Thunderstorm WarningGGWValley61 min
Jun 22, 2:31 PM MDTSevere Thunderstorm WarningGGWValley59 min
Jun 22, 2:32 PM MDTSevere Thunderstorm WarningGGWValley58 min
Jun 22, 2:42 PM MDTSevere Thunderstorm WarningGGWPhillips63 min
Jun 22, 2:45 PM MDTFlash Flood WarningGGWGarfield3 hr
Jun 22, 3:13 PM MDTSevere Thunderstorm WarningGGWValley62 min
Jun 22, 3:44 PM MDTSevere Thunderstorm WarningGGWPhillips61 min
Jun 22, 5:06 PM MDTSevere Thunderstorm WarningGGWPhillips69 min
Jun 22, 5:47 PM MDTSevere Thunderstorm WarningGGWGarfield, Prairie58 min

Nearby

Severe Thunderstorm Warnings in Montana, 2002Every severe thunderstorm warning in 2002

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.