Alert archive / Nebraska / Tornado Warnings in 1988

Tornado Warning 8, NWS Cheyenne, WY

August 9, 1988Morrill County, Nebraska

NWS Cheyenne, WY issued this tornado warning at Aug 9, 1988, 3:31 PM MDT for Morrill County, Nebraska. It was in force for 29 min.

The area

The counties it named.

The facts

Issued
Aug 9, 1988, 3:31 PM MDT (21:31 UTC)
Expired
Aug 9, 1988, 4:00 PM MDT
In force
29 min
Issued by
NWS Cheyenne, WY
Area
Whole counties

County Morrill 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

Denver, CO (KDEN), launched 12:00Z, 9.5 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, Denver, CO at 12:00Z on 1988-08-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 294 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, Denver, CO at 12:00Z on 1988-08-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 3 square meters per square second.19395878Sfc1 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
294 J/kg
Mixed-layer CIN
-247 J/kg
Mixed-layer LCL
1467 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
3 m²/s²
0-3 km storm-relative helicity
77 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 092131
TORBFF
NEC123-092200-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
TORNADO WARNING 
NATIONAL WEATHER SERVICE SCOTTSBLUFF NE
331 PM MDT TUE AUG 9 1988

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING 
EFFECTIVE UNTIL 400 PM MDT FOR PEOPLE IN THE FOLLOWING COUNTY

   IN THE PANHANDLE OF NEBRASKA
      WESTERN MORRILL

AT 330 PM MDT A TORNADO WAS SIGHTED 10 MILES WEST OF BRIDGEPORT
NEBRASKA MOVING TO THE NORTHEAST AT] 20 MPH.

IF YOU ARE CAUGHT OUTSIDE...FIND SHELTER IN A NEARBY REINFORCED
BUILDING.  AS A LAST RESORT...TAKE SHELTER IN A CULVERT...DITCH OR
LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

KIRK

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 9, 3:13 PM MDTTornado WarningCYSBanner, Morrill32 min
Aug 9, 4:00 PM MDTTornado WarningCYSCheyenne30 min
Aug 9, 4:10 PM MDTSevere Thunderstorm WarningCYSGarden65 min
Aug 9, 4:23 PM MDTSevere Thunderstorm WarningCYSCheyenne, Deuel, Garden67 min

Nearby

Tornado Warnings in Nebraska, 1988Every tornado warning in 1988Tornadoes in 1988

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.