Alert archive / Nebraska / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 331, NWS North Platte, NE

August 14, 1996Perkins County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Aug 14, 1996, 12:51 PM MDT for Perkins County, Nebraska. It was in force for 64 min. 2 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 14, 1996, 12:51 PM MDT (18:51 UTC)
Expired
Aug 14, 1996, 1:55 PM MDT
In force
64 min
Issued by
NWS North Platte, NE
Area
Whole counties

County Perkins County, NE

The radar

The North Platte radar (KLNX), 152 km from the middle of the area, began a volume at 18:54 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 14, 1:45 PM MDTHail 0.75Grant, NE
Aug 14, 2:00 PM MDTHail 0.75Elsie, 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, 6.9 hours before the alert went out and 93 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 12:00Z on 1996-08-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 205 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 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 12:00Z on 1996-08-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 65 square meters per square second.1939Sfc1 km3 km6 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
205 J/kg
Mixed-layer CIN
-162 J/kg
Mixed-layer LCL
955 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
65 m²/s²
0-3 km storm-relative helicity
182 m²/s²
Significant tornado parameter
-0.0
Supercell composite
-0.2

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KLBF 141851
SVRLBF
NEC135-141955-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
151 PM CDT (1251 PM MDT) WED AUG 14 1996

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE NE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 155 PM MDT (255 PM CDT)
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN SOUTHWEST NEBRASKA

   ...PERKINS COUNTY
 
AT 1250 PM MDT...A SEVERE THUNDERSTORM WAS INDICATED BY NORTH PLATTE
DOPPLER RADAR 13 MILES SOUTH OF OGALLALA OR 6 MILES NORTH NORTHWEST
OF GRANT MOVING EAST SOUTHEAST AT 25 MPH.

DAMAGING HAIL AND/OR DESTRUCTIVE WINDS CAN BE EXPECTED NEAR...
  GRANT                        BY 105 PM MDT
  MADRID                       BY 121 PM MDT
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...
DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.  FOR YOUR
PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR POSSIBLE.

MICHELS

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.

In the hours before

Special weather statement, Aug 14, 10:32 AM MDT, 2 hours 19 minutes before
NEZ004>010-022>029-035>038-056>059-069>071-151200-

SEVERE WEATHER OUTLOOK FOR WESTERN AND NORTH CENTRAL NEBRASKA
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1130 AM CDT (1030 AM MDT) WED AUG 14 1996

THIS OUTLOOK PERTAINS TO THE FOLLOWING NEBRASKA COUNTIES...

ARTHUR     BLAINE     BOYD       BROWN      CHASE      CHERRY
CUSTER     DEUEL      FRONTIER   GARDEN     GARFIELD   GRANT
HAYES      HOLT       HOOKER     KEITH      KEYA PAHA  LINCOLN
LOGAN      LOUP       MCPHERSON  PERKINS    ROCK       SHERIDAN
THOMAS     WHEELER

...STORM SPOTTER ACTIVATION MAY BE REQUIRED OVER PARTS OF WESTERN
NEBRASKA THIS AFTERNOON AND TONIGHT...

THERE IS A SLIGHT CHANCE FOR SEVERE THUNDERSTORMS LATE THIS AFTERNOON
AND TONIGHT MAINLY WEST OF A LINE FROM RUSHVILLE TO NORTH PLATTE.
SCATTERED THUNDERSTORMS WILL ALSO BE POSSIBLE THIS AFTERNOON OVER THE
REST OF THE OUTLOOK AREA BUT ARE NOT EXPECTED TO BECOME SEVERE.

A WEAK COLD FRONT WILL SAG SOUTHWARD ACROSS THE SOUTHERN PORTION OF THE
OUTLOOK AREA BY AFTERNOON. THIS FRONT WILL BEGIN TO MOVE EASTWARD OVER
THE WESTERN PORTION OF THE AREA AS A WARM FRONT AND IS EXPECTED TO
TRIGGER THUNDERSTORMS OVER THIS AREA. AT THE SURFACE...A MOIST
SOUTHEASTERLY WIND WILL BRING ADDITIONAL MOISTURE INTO THE WESTERN
PORTION OF THE AREA. THIS AIRMASS WILL BECOME UNSTABLE BY MID AFTERNOON
AND AS AN UPPER LEVEL DISTURBANCE MOVES INTO THE AREA...A FEW
THUNDERSTORMS MAY BECOME SEVERE BY LATE AFTERNOON.

FS

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 14, 5:16 AM MDTSevere Thunderstorm WarningLBFCuster, Lincoln59 min
Aug 14, 12:45 PM MDTSevere Thunderstorm WarningLBFKeith45 min
Aug 14, 1:48 PM MDTSevere Thunderstorm WarningLBFChase62 min
Aug 14, 1:55 PM MDTSevere Thunderstorm WarningLBFPerkins45 min
Aug 14, 2:19 PM MDTSevere Thunderstorm WarningLBFHayes46 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 1996Every severe thunderstorm warning in 1996

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.