Alert archive / Nebraska / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 205, NWS North Platte, NE

August 24, 2002Custer County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Aug 24, 2002, 6:20 PM CDT for Custer County, Nebraska. It was in force for 55 min. 4 reports 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: Aug 24, 2002, 6:20 PM CDT (23:20 UTC)
Expired: Aug 24, 2002, 7:15 PM CDT
In force: 55 min
Issued by: NWS North Platte, NE
Area: Counties, with a storm outline in the text

County Custer County, NE

The radar

The North Platte radar (KLNX), 94 km from the middle of the area, began a volume at 23:23 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.

What was reported inside it

Time	Report	Where	Remark
Aug 24, 6:20 PM CDT	Hail 0.75	Callaway, NE
Aug 24, 6:35 PM CDT	Hail 1	Callaway, NE	Hail covered the ground.
Aug 24, 6:50 PM CDT	Hail 1.75	Oconto, NE
Aug 24, 6:50 PM CDT	Thunderstorm Wind 52 E	Oconto, NE

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

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 11.3 hours before the alert went out and 79 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: 396 J/kg
Mixed-layer CIN: -113 J/kg
Mixed-layer LCL: 916 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 106 m²/s²
0-3 km storm-relative helicity: 117 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.1

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 North Platte, NE wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 24, 3:30 PM CDT, 2 hours 50 minutes earlier.

Area forecast discussion, Aug 24, 3:30 PM CDT, 2 hours 50 minutes before

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In the hours before

Local storm report, Aug 24, 4:31 PM CDT, 1 hour 49 minutes before

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Local storm report, Aug 24, 4:57 PM CDT, 1 hour 23 minutes before

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Local storm report, Aug 24, 5:02 PM CDT, 1 hour 18 minutes before

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Local storm report, Aug 24, 5:51 PM CDT, 29 minutes before

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Local storm report, Aug 24, 6:05 PM CDT, 15 minutes before

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Local storm report, Aug 24, 6:09 PM CDT, 11 minutes before

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The office that day

Everything else NWS North Platte, NE issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 23, 8:07 PM CDT	Severe Thunderstorm Warning	LBF	Brown	53 min
Aug 23, 8:49 PM CDT	Severe Thunderstorm Warning	LBF	Cherry, Sheridan	56 min
Aug 23, 10:08 PM CDT	Severe Thunderstorm Warning	LBF	Blaine	37 min
Aug 23, 10:58 PM CDT	Severe Thunderstorm Warning	LBF	Cherry	62 min
Aug 24, 12:22 AM CDT	Severe Thunderstorm Warning	LBF	Brown, Rock	38 min
Aug 24, 12:44 AM CDT	Severe Thunderstorm Warning	LBF	Keya Paha	46 min
Aug 24, 1:06 AM CDT	Severe Thunderstorm Warning	LBF	Holt, Rock	54 min
Aug 24, 1:28 AM CDT	Severe Thunderstorm Warning	LBF	Boyd, Holt	62 min
Aug 24, 2:32 AM CDT	Severe Thunderstorm Warning	LBF	Holt	43 min
Aug 24, 3:01 PM CDT	Severe Thunderstorm Warning	LBF	Garden	59 min
Aug 24, 3:12 PM CDT	Tornado Warning	LBF	Deuel, Garden	33 min
Aug 24, 3:45 PM CDT	Tornado Warning	LBF	Deuel	30 min
Aug 24, 4:16 PM CDT	Tornado Warning	LBF	Deuel	14 min
Aug 24, 4:41 PM CDT	Tornado Warning	LBF	Perkins	49 min
Aug 24, 5:09 PM CDT	Severe Thunderstorm Warning	LBF	Deuel	51 min
Aug 24, 5:28 PM CDT	Tornado Warning	LBF	Chase	62 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2002 Every 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; radar from the NEXRAD Level II archive.