Alert archive / Nebraska / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 236, NWS North Platte, NE

August 28, 2002Garden County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Aug 28, 2002, 10:20 PM MDT for Garden County, Nebraska. It was in force for 55 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Aug 28, 2002, 10:20 PM MDT (04:20 UTC)
Expired: Aug 28, 2002, 11:15 PM MDT
In force: 55 min
Issued by: NWS North Platte, NE
Area: Counties, with a storm outline in the text

County Garden County, NE

The radar

The North Platte radar (KLNX), 163 km from the middle of the area, began a volume at 04:23 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.

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 4.3 hours before the alert went out and 152 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: 2042 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 1476 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 23 m²/s²
0-3 km storm-relative helicity: 110 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 3.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

156 
WUUS53 KLBF 290420
SVRLBF
NEC069-290515-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1018 PM MDT WED AUG 28 2002

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN GARDEN COUNTY IN THE PANHANDLE OF NEBRASKA...

* UNTIL 1115 PM MDT...

* AT 1013 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR 
  INDICATED A NEARLY STATIONARY LINE OF SEVERE THUNDERSTORMS
  EXTENDING FROM 13 MILES SOUTHWEST OF OSHKOSH TO 3 MILES EAST OF
  LEWELLEN.

* SEVERE THUNDERSTORMS WILL BE...

  OVER AND NEAR LEWELLEN THROUGH 1045 PM MDT...

IF YOU ARE IN THE PATH OF THESE STORMS...SEEK SHELTER IN A SMALL
INTERIOR ROOM AWAY FROM WINDOWS. A BASEMENT OFFERS THE BEST
PROTECTION.

THIS THUNDERSTORM IS PRODUCING EXCESSIVE RAINFALL. FLASH FLOOD 
WARNINGS ARE ALSO IN EFFECT FOR THE AREA THROUGH 100 AM MDT. IF YOU 
ARE IN A LOW LYING AREA...BE ALERT FOR RAPIDLY RISING WATER. DO NOT 
DRIVE ON WATER COVERED ROADS.

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY FOR RELAY
TO THE NATIONAL WEATHER SERVICE.

LAT...LON 4149 10262 4150 10200 4123 10208 4124 10260

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 28, 8:26 PM MDT	Severe Thunderstorm Warning	LBF	Perkins	64 min
Aug 28, 8:36 PM MDT	Severe Thunderstorm Warning	LBF	Deuel, Garden	54 min
Aug 28, 10:08 PM MDT	Flash Flood Warning	LBF	Garden	3 hr
Aug 28, 11:17 PM MDT	Severe Thunderstorm Warning	LBF	Keya Paha	58 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.