Alert archive / Nebraska / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 16, NWS Cheyenne, WY

May 24, 1990Cheyenne County, Morrill County, Nebraska

NWS Cheyenne, WY issued this severe thunderstorm warning at May 24, 1990, 7:20 PM MDT for Cheyenne County, Morrill County, Nebraska. It was in force for 25 min.

The area

The counties it named.

The facts

Issued
May 24, 1990, 7:20 PM MDT (01:20 UTC)
Expired
May 24, 1990, 7:45 PM MDT
In force
25 min
Issued by
NWS Cheyenne, WY
Area
Whole counties

Counties Cheyenne County, NE, 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 00:00Z, 1.3 hours before the alert went out and 179 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 00:00Z on 1990-05-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 263 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 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 00:00Z on 1990-05-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 80 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
263 J/kg
Mixed-layer CIN
-29 J/kg
Mixed-layer LCL
3537 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
80 m²/s²
0-3 km storm-relative helicity
60 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.9

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KBFF 250120
SVRBFF
NEC123-033-250215-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING 
NATIONAL WEATHER SERVICE SCOTTSBLUFF NE
720 PM MDT THU MAY 24 1990

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 815 PM MDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES

   IN THE PANHANDLE OF NEBRASKA
      SOUTHERN MORRILL...NORTHERN CHEYENNE

AT 716 PM MDT...RADAR INDICATED A SEVERE THUNDERSTORM 25 MILES
NORTHWEST OF SIDNEY NEBRASKA...ALONG THE MORRILL AND CHEYENNE
COUNTY LINE.

PREPARE FOR LARGE HAIL...DAMAGING WIND...HEAVY RAIN AND DANGEROUS
LIGHTNING BY TAKING COVER.  STAY AWAY FROM AREAS WHERE LOOSE ITEMS
CAN BECOME DANGEROUS FLYING DEBRIS.

A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA.  REMEMBER
THESE STORMS CAN AND OCCASIONALLY DO PRODUCE A TORNADO WITH LITTLE
OR NO ADVANCE WARNING.

WIRTH

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, May 24, 2:24 PM MDT, 4 hours 56 minutes before
NEZ001-005-242230

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SCOTTSBLUFF NE
225 PM MDT THU MAY 24 1990

...TORNADO WATCH UNTIL 700 PM MDT FOR PARTS OF THE CENTRAL AND NORTH
NEBRASKA PANHANDLE...

AT 225 PM MDT...ONLY A FEW ISOLATED RAINSHOWERS WERE OCCURRING OVER THE
NORTHEAST NEBRASKA PANHANDLE SOUTHEAST OF GORDON NEBRASKA.  THERE
HAVE BEEN NO REPORTS OF SEVERE WEATHER IN THE NEBRASKA PANHANDLE UP
UNTIL 225 PM MDT.

STRONG THUNDERSTORMS WERE HOWEVER OVER SOUTHEAST WYOMING...NEAR
WHEATLAND AND 30 MILES NORTH OF CHEYENNE WYOMING.  THESE STORMS
DO NOT POSE A THREAT TO THE PANHANDLE OF NEBRASKA AT THIS TIME.

A TORNADO WATCH DOES REMAIN IN EFFECT OVER PARTS OF THE NEBRASKA
PANHANDL4E UNTIL 700 PM MDT...AND YOU SHOULD CONTINUE TO MONITOR RADIO
AND TELEVISION FOR LATER STATEMENTS OR WARNINGS.
WIRTH
Special weather statement, May 24, 2:31 PM MDT, 4 hours 49 minutes before
NEZ002-242130-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE VALENTINE NE
ISSUED BY SCOTTSBLUFF NE
230 PM MDT WED MAY 24 1990

...STRONG THUNDERSTORM BUILDING OVER NORTHCENTRAL NEBRASKA...

AT 225 PM MDT...AN ISOLATED STRONG THUNDERSTORM HAD DEVELOPED OVER
SOUTHWEST CHERRY COUNTY IN NORTHCENTRAL NEBRASKA.  THE STORM WAS
LOCATED 55 MILES NORTHEAST OF ALLIANCE NEBRASKA...OR 70 MILES SOUTHWEST
OF VALENTINE NEBRASKA.  THE STORM WAS MOVING NORTHEAAST AT 30 MILES AN
HOUR.

BRIEF HEAVY RAIN AND SMALL HAIL CAN BE EXPECTED WITH THIS STORM UNTIL
330 PM MDT.

WIRTH
Special weather statement, May 24, 4:10 PM MDT, 3 hours 10 minutes before
NEZ001-005-011-242300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SCOTTSBLUFF NE
410 PM MDT THU MAY 24 1990

...TORNADO WATCH 308 FOR PARTS OF THE CENTRAL AND NORTH NEBRASKA
PANHANDLE UNTIL 700 PM MDT...
...TORNADO WATCH 309 FOR THE SOUTH NEBRASKA PANHANDLE UNTIL 800 PM MDT...

AT 405 PM MDT...SCATTERED THUNDERSTORMS WERE DEVELOPING OVER THE WEST
NEBRASKA PANHANDLE FROM 30 MILES SOUTHWEST OF SCOTTSBLUFF NEBRASKA TO
50 MILES WEST OF CHADRON NEBRASKA.  THE STRONGEST STORM WAS LOCATED
OVER THE EXTREME NORTHWEST CORNER OF THE PANHANDLE...OR 50 MILES WEST OF
CHADRON NEBRASKA.  THE STORMS WERE MOVING NORTHEAST AT 25 MILES AN HOUR.

BRIEF HEAVY RAIN...GUSTY WINDS AND HAIL CAN BE EXPECTED WITH THE STORM
OVER THE WEST OF CHADRON UNTIL 500 PM MDT.

TORNADO WATCHES REMAIN IN EFFECT UNTIL 700 PM MDT OVER ALL BUT GARDEN
AND SHERIDAN COUNTIES OF THE CENTRAL AND NORTH NEBRASKA PANHANDLE...
AND OVER THE SOUTHERN BORDER COUNTIES OF THE PANHANDLE UNTIL 800 PM MDT.

WIRTH
Special weather statement, May 24, 5:01 PM MDT, 2 hours 19 minutes before
NEZ001-005-011-250000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SCOTTSBLUFF NE
500 PM MDT THU MAY 24 1990

...TORNADO WATCH 308 FOR PARTS OF THE CENTRAL AND NORTH NEBRASKA
PANHANDLE UNTIL 700 PM MDT...
...TORNADO WATCH 309 FOR THE SOUTH NEBRASKA PANHANDLE UNTIL 800 PM MDT...

AT 455 PM MDT...A LINE OF THUNDERSTORMS CONTINUED TO GAIN STRENGTH OVER
THE NORTHWEST NEBRASKA PANHANDLE FROM NEAR SCOTTSBLUFF NEBRASKA TO 40
MILES NORTHWEST OF CHADRON NEBRASKA.   THE STRONGEST OF THE STORMS WERE
INDICATED BY RADAR OVER NORTHERN SCOTTS BLUFF AND SOUTHEAST SIOUX
SIOUX COUNTIES...OR FROM 40 MILES NORTHWEST OF ALLIANCE TO NEAR
SCOTTSBLUFF.  THE STORMS WERE MOVING NORTHEAST AT 25 MILES AN HOUR.

AT 450 PM MDT...ONE QUARTER INCH HAIL AND HEAVY RAIN WAS REPORTED 5
5 MILES SOUTHWEST OF THE SCOTTSBLUFF AIRPORT.

BRIEF HEAVY RAIN...AND HAIL IS LIKELY WITH THE APPROACH OF THESE STORMSA
AS THEY ENTER INTO WESTERN BOX BUTTE COUNTY OF THE PANHANDLE BY 530 PM
MDT.
WIRTH
Special weather statement, May 24, 5:14 PM MDT, 2 hours 6 minutes before
NEZ001-005-011-250000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SCOTTSBLUFF NE
500 PM MDT THU MAY 24 1990

...TORNADO WATCH 308 FOR PARTS OF THE CENTRAL AND NORTH NEBRASKA
PANHANDLE UNTIL 700 PM MDT...
...TORNADO WATCH 309 FOR THE SOUTH NEBRASKA PANHANDLE UNTIL 800 PM MDT...

AT 455 PM MDT...A LINE OF THUNDERSTORMS CONTINUED TO GAIN STRENGTH OVER
THE NORTHWEST NEBRASKA PANHANDLE FROM NEAR SCOTTSBLUFF NEBRASKA TO 40
MILES NORTHWEST OF CHADRON NEBRASKA.   THE STRONGEST OF THE STORMS WERE
INDICATED BY RADAR OVER NORTHERN SCOTTS BLUFF AND SOUTHEAST SIOUX
SIOUX COUNTIES...OR FROM 40 MILES NORTHWEST OF ALLIANCE TO NEAR
SCOTTSBLUFF.  THE STORMS WERE MOVING NORTHEAST AT 25 MILES AN HOUR.

AT 450 PM MDT...ONE QUARTER INCH HAIL AND HEAVY RAIN WAS REPORTED 5
MILES SOUTHWEST OF THE SCOTTSBLUFF AIRPORT.

BRIEF HEAVY RAIN...AND HAIL IS LIKELY WITH THE APPROACH OF THESE STORMS
AS THEY ENTER INTO WESTERN BOX BUTTE COUNTY OF THE PANHANDLE BY 530 PM
MDT.

WIRTH
Special weather statement, May 24, 5:56 PM MDT, 1 hour 24 minutes before
NEZ001-005-011-250030-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SCOTTSBLUFF NE
555 PM MDT THU MAY 24 1990

...TORNADO WATCH 308 FOR PARTS OF THE CENTRAL AND NORTH NEBRASKA
PANHANDLE UNTIL 700 PM MDT...
...TORNADO WATCH 309 FOR THE SOUTH NEBRASKA PANHANDLE UNTIL 800 PM MDT...

A LINE OF THUNDERSTORMS CONTINUED TO MOVE EAST ACROSS THE NORTH AND
CENTRAL NEBRASKA PANHANDLE AT 545 PM MDT.   THE LINE OF STORMS EXTENDED
FROM 10 MILES NORTHWEST OF CHADRON NEBRASKA TO 10 MILES EAST OF
SCOTTSBLUFF NEBRASKA AND WAS MOVING EAST AT 25 MILES AN HOUR.

RADAR INDICATED THE STRONGEST OF THE STORMS JUST TO THE SOUTHWEST OF
ALLIANCE NEBRASKA.

BRIEF HEAVY RAIN...AND HAIL IS LIKELY WITH THE APPROA$CH OF THESE STORMS
AS THEY MOVE ACROSS EASTERN DAWES...EASTERN BOX BUTTE AND NORTHERN
MORRILL COUNTIES OF THE NEBRASKA PANHANDLE UNTIL 630 PM MDT.
WIRTH

The office that day

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

IssuedProductOfficeCountiesLasted
May 24, 6:12 PM MDTSevere Thunderstorm WarningCYSBanner, Kimball63 min
May 24, 6:31 PM MDTSevere Thunderstorm WarningCYSBox Butte, Sheridan59 min
May 24, 6:46 PM MDTTornado WarningCYSBanner, Kimball29 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 1990Every severe thunderstorm warning 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.