Alert archive / Nebraska / Tornado Warnings in 1989

Tornado Warning 2, NWS Cheyenne, WY

April 26, 1989Box Butte County, Dawes County, Sioux County, Nebraska

NWS Cheyenne, WY issued this tornado warning at Apr 26, 1989, 8:24 PM MDT for Box Butte County, Dawes County, Sioux County, Nebraska. It was in force for 36 min. 1 report 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
Apr 26, 1989, 8:24 PM MDT (02:24 UTC)
Expired
Apr 26, 1989, 9:00 PM MDT
In force
36 min
Issued by
NWS Cheyenne, WY
Area
Whole counties

Counties Box Butte County, NE, Dawes County, NE, Sioux County, NE

The radar

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

What was reported inside it

TimeReportWhereRemark
Apr 26, 8:45 PM MDTHail 0.75Dawes, 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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Rapid City, SD (KRAP), launched 00:00Z, 2.4 hours before the alert went out and 181 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 00:00Z on 1989-04-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 00:00Z on 1989-04-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 225 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
592 m above ground
0-6 km bulk shear
60 kt
0-1 km storm-relative helicity
225 m²/s²
0-3 km storm-relative helicity
338 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.7

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KBFF 270224
TORBFF
NEC165-045-013-270300-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
TORNADO WARNING 
NATIONAL WEATHER SERVICE SCOTTSBLUFF NE
824 PM MDT WED APR 26 1989

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING 
EFFECTIVE UNTIL 900 PM MDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES

   IN THE PANHANDLE OF NEBRASKA
      EASTERN SIOUX...SOUTHWEST DAWES...NORTHWEST BOX BUTTE

AT 825 PM MDT RADAR INDICATED A POSSIBLE TORNADO 25 MILES NORTH OF
SCOTTSBLUFF NEBRASKA THAT WAS MOVING NORTHEAST AT 35 MPH.

LARGE HAIL...DANGEROUS LIGHTNING AND VERY HEAVY RAIN ARE LIKELY WITH
THIS STORM...IN ADDITION TO THE THREAT OF TORNADOES.

GIVE REPORTS OF SEVERE WEATHER OR DAMAGE) TO A LAW ENFORCEMENT AGENCY
FOR RELAY TO THE NATIONAL WEATHER SERVICE.

KOSEL

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 26, 7:51 PM MDTSevere Thunderstorm WarningCYSSioux69 min
Apr 26, 8:11 PM MDTTornado WarningCYSSioux34 min

Nearby

Tornado Warnings in Nebraska, 1989Every tornado warning in 1989Tornadoes in 1989

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.