Alert archive / Nebraska / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 337, NWS North Platte, NE

August 15, 1996Grant County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Aug 15, 1996, 8:03 AM MDT for Grant County, Nebraska. It was in force for 62 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 15, 1996, 8:03 AM MDT (14:03 UTC)
Expired
Aug 15, 1996, 9:05 AM MDT
In force
62 min
Issued by
NWS North Platte, NE
Area
Whole counties

County Grant County, NE

The radar

The North Platte radar (KLNX), 96 km from the middle of the area, began a volume at 14:04 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 12:00Z, 2.1 hours before the alert went out and 129 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 1996-08-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 583 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 12:00Z on 1996-08-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 1 square meters per square second.1939Sfc1 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
583 J/kg
Mixed-layer CIN
-77 J/kg
Mixed-layer LCL
733 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
1 m²/s²
0-3 km storm-relative helicity
51 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KLBF 151403
SVRLBF
NEC075-151505-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
903 AM CDT (803 AM MDT) THU AUG 15 1996

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE NE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 905 AM MDT (1005 AM CDT)
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN WEST CENTRAL NEBRASKA

   ...GRANT COUNTY
 
AT 802 AM MDT...A SEVERE THUNDERSTORM WAS INDICATED BY NORTH PLATTE
DOPPLER RADAR 42 MILES EAST SOUTHEAST OF ALLIANCE OR 6 MILES WEST
SOUTHWEST OF ASHBY MOVING EAST SOUTHEAST AT 21 MPH.

DAMAGING HAIL AND/OR DESTRUCTIVE WINDS CAN BE EXPECTED NEAR...
  ASHBY                        BY 820 AM MDT
  HYANNIS                      BY 841 AM MDT
 
IF YOU ARE IN THE PATH OF THIS STORM...GO INSIDE A STRONG BUILDING.
STAY AWAY FROM WINDOWS.  DO NOT USE TELEPHONES OR ELECTRICAL
APPLIANCES...UNLESS IN AN EMERGENCY...UNTIL THE STORM HAS PASSED.

IF SEVERE WEATHER IS OBSERVED...CONTACT YOUR LOCAL LAW ENFORCEMENT
AGENCY AND ASK THEM TO RELAY YOUR INFORMATION TO THE NATIONAL
WEATHER SERVICE.


SP/JWS

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 15, 6:43 AM MDT, 1 hour 20 minutes before
NEZ004>010-022>029-035>038-056>059-069>071-161200-

SEVERE WEATHER OUTLOOK FOR WESTERN AND NORTH CENTRAL NEBRASKA
NATIONAL WEATHER SERVICE NORTH PLATTE NE
739 AM CDT (639 AM MDT) THU AUG 15 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 AND
NORTH CENTRAL NEBRASKA TODAY AND TONIGHT...

THERE IS A SLIGHT CHANCE FOR SEVERE THUNDERSTORMS TO DEVELOP TODAY AND
TONIGHT OVER THE OUTLOOK AREA. THE GREATEST RISK OF SEVERE THUNDERSTORM
DEVELOPMENT WILL BE WEST OF A LINE FROM VALENTINE TO BROKEN BOW.

A SEMI-STATIONARY FRONTAL BOUNDRY WILL FLUCTUATE NORTHEAST ACROSS THE
NEBRASKA PANHANDLE INTO FAR WESTERN NEBRASKA TODAY...THEN RETURN TO
TO THE SOUTHWEST THIS EVENING. THE FRONT WILL BE THE MAIN FOCUS
FOR THUNDERSTORM DEVELOPMENT IN WESTERN NEBRASKA WITH SOME STORMS
BECOMING SEVERE AS UPPER LEVEL DISTURBANCES MOVE SOUTHEAST TODAY AND
TONIGHT.

UPSLOPE WINDS...ABUNDENT MOISTURE AND AFTERNOON HEATING WILL ALSO
ENHANCE THUNDERSTORM DEVELOPMENT IN THE NORTH CENTRAL PORTIONS BY LATE
AFTERNOON...INTO THE EVENING.

WOOD

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 15, 6:53 AM MDTSevere Thunderstorm WarningLBFSheridan47 min
Aug 15, 7:09 AM MDTSevere Thunderstorm WarningLBFGarden61 min
Aug 15, 4:09 PM MDTSevere Thunderstorm WarningLBFSheridan61 min
Aug 15, 4:23 PM MDTFlash Flood WarningLBFSheridan3 hr
Aug 15, 5:19 PM MDTSevere Thunderstorm WarningLBFGarden, Sheridan61 min
Aug 15, 5:52 PM MDTSevere Thunderstorm WarningLBFSheridan63 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.