Alert archive / Nebraska / Tornado Warnings in 1990

Tornado Warning 37, NWS Cheyenne, WY

August 22, 1990Box Butte County, Nebraska

NWS Cheyenne, WY issued this tornado warning at Aug 22, 1990, 1:31 PM MDT for Box Butte County, Nebraska. It was in force for 29 min.

The area

The counties it named.

The facts

Issued
Aug 22, 1990, 1:31 PM MDT (19:31 UTC)
Expired
Aug 22, 1990, 2:00 PM MDT
In force
29 min
Issued by
NWS Cheyenne, WY
Area
Whole counties

County Box Butte County, NE

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Rapid City, SD (KRAP), launched 12:00Z, 7.5 hours before the alert went out and 206 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, Rapid City, SD at 12:00Z on 1990-08-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1006 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, Rapid City, SD at 12:00Z on 1990-08-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -43 square meters per square second.19395878Sfc1 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
1006 J/kg
Mixed-layer CIN
-262 J/kg
Mixed-layer LCL
1938 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
-43 m²/s²
0-3 km storm-relative helicity
-14 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 KBFF 221931
TORBFF
NEC013-222000-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
TORNADO WARNING 
NATIONAL WEATHER SERVICE SCOTTSBLUFF NE
131 PM MDT WED AUG 22 1990

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING 
EFFECTIVE UNTIL 200 PM MDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES

   IN THE PANHANDLE OF NEBRASKA
      SOUTHERN BOX BUTTE...THE CITY OF ALLIANCE

AT 125 PM MDT...A TORNADO WAS REPORTED 5 MILES WEST OF ALLIANCE
MOVING NORTHEAST AT 15 MPH.  IF YOU ARE IN ALLIANCE...TAKE SHELTER
NOW.

DO NOT TRY TO OUTRUN A TORNADO IN A CAR.  CARS ARE EASILY TOSSED
AROUND BY TORNADOES.  IF YOU ARE CAUGHT IN THE PATH OF A TORNADO...
LEAVE THE CAR AND GO TO A REINFORCED BUILDING.  IF NO STRUCTURE IS
NEARBY...TAKE SHELTER IN A DITCH OR LOW SPOT AWAY FROM THE VEHICLE.

PEEK

The office that day

Everything else NWS Cheyenne, WY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 21, 6:54 PM MDTSevere Thunderstorm WarningCYSGarden44 min
Aug 22, 1:11 PM MDTSevere Thunderstorm WarningCYSDawes64 min

Nearby

Tornado Warnings in Nebraska, 1990Every tornado warning in 1990Tornadoes in 1990

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.