Alert archive / Nebraska / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 201, NWS North Platte, NE

August 24, 2002Boyd County, Holt County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Aug 24, 2002, 1:28 AM CDT for Boyd County, Holt County, Nebraska. It was in force for 62 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Aug 24, 2002, 1:28 AM CDT (06:28 UTC)
Expired
Aug 24, 2002, 2:30 AM CDT
In force
62 min
Issued by
NWS North Platte, NE
Area
Counties, with a storm outline in the text

Counties Boyd County, NE, Holt County, NE

The radar

The North Platte radar (KLNX), 167 km from the middle of the area, began a volume at 06:32 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

TimeReportWhereRemark
Aug 24, 1:40 AM CDTThunderstorm Wind 55 ENaper, NETwo foot diameter trees were uprooted.
Aug 24, 2:40 AM CDTThunderstorm Wind 52 EEwing, NEEight inch diameter limbs were broken off trees.

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 00:00Z, 6.5 hours before the alert went out and 231 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, N. Platte/Lee Bi, NE at 00:00Z on 2002-08-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1117 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, N. Platte/Lee Bi, NE at 00:00Z on 2002-08-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 27 square meters per square second.1939587897Sfc1 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
1117 J/kg
Mixed-layer CIN
-16 J/kg
Mixed-layer LCL
2523 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
27 m²/s²
0-3 km storm-relative helicity
102 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.6

Open this sounding in Storm Lab

The text

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

885 
WUUS53 KLBF 240628
SVRLBF
NEC015-089-240730-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
128 AM CDT SAT AUG 24 2002

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  BOYD COUNTY IN NORTH CENTRAL NEBRASKA...
  EASTERN HOLT COUNTY IN NORTH CENTRAL NEBRASKA...

* UNTIL 230 AM CDT...

* AT 127 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  THE MOST DANGEROUS PART OF A SEVERE THUNDERSTORM ALONG A LINE
  EXTENDING FROM NAPER TO 19 MILES WEST OF CHAMBERS...OR ABOUT ALONG
  A LINE EXTENDING FROM NAPER TO 11 MILES SOUTHWEST OF AMELIA...
  MOVING EAST AT 40 MPH.

* SEVERE THUNDERSTORMS WILL BE...

  OVER BUTTE...ANOKA AROUND 145 AM CDT...
  OVER CHAMBERS AROUND 150 AM CDT...
  OVER SPENCER AROUND 155 AM CDT...
  OVER ONEILL AROUND 200 AM CDT...
  OVER GROSS...BRISTOW AROUND 205 AM CDT...
  OVER LYNCH...INMAN AROUND 210 AM CDT...

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

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...EXTREMELY INTENSE
LIGHTNING IS ALSO LIKELY WITH THIS STORM. IF OUTDOORS...STAY AWAY
FROM TALL OBJECTS. IF POSSIBLE...MOVE INDOORS OR INTO YOUR VEHICLE.

THESE THUNDERSTORMS MAY PRODUCE WEAK...SHORT LIVED TORNADOS ALONG ITS
LEADING EDGE. HOWEVER...THE PRIMARY THREAT POSED BY THIS STORM IS
DAMAGING WINDS. QUICKLY SEEK SAFETY IN A BUILDING AND STAY AWAY FROM
WINDOWS.

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

LAT...LON 4299 9926 4281 9925 4290 9900 4283 9877
          4210 9877 4209 9831 4288 9832 4299 9852

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 23, 8:07 PM CDTSevere Thunderstorm WarningLBFBrown53 min
Aug 23, 8:49 PM CDTSevere Thunderstorm WarningLBFCherry, Sheridan56 min
Aug 23, 10:08 PM CDTSevere Thunderstorm WarningLBFBlaine37 min
Aug 23, 10:58 PM CDTSevere Thunderstorm WarningLBFCherry62 min
Aug 24, 12:22 AM CDTSevere Thunderstorm WarningLBFBrown, Rock38 min
Aug 24, 12:44 AM CDTSevere Thunderstorm WarningLBFKeya Paha46 min
Aug 24, 1:06 AM CDTSevere Thunderstorm WarningLBFHolt, Rock54 min
Aug 24, 2:32 AM CDTSevere Thunderstorm WarningLBFHolt43 min
Aug 24, 3:01 PM CDTSevere Thunderstorm WarningLBFGarden59 min
Aug 24, 3:12 PM CDTTornado WarningLBFDeuel, Garden33 min
Aug 24, 3:45 PM CDTTornado WarningLBFDeuel30 min
Aug 24, 4:16 PM CDTTornado WarningLBFDeuel14 min
Aug 24, 4:41 PM CDTTornado WarningLBFPerkins49 min
Aug 24, 5:09 PM CDTSevere Thunderstorm WarningLBFDeuel51 min
Aug 24, 5:28 PM CDTTornado WarningLBFChase62 min
Aug 24, 6:20 PM CDTSevere Thunderstorm WarningLBFCuster55 min

Nearby

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