Alert archive / Nebraska / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 64, NWS Cheyenne, WY

June 29, 1990Morrill County, Nebraska

NWS Cheyenne, WY issued this severe thunderstorm warning at Jun 29, 1990, 9:52 PM MDT for Morrill County, Nebraska. It was in force for 68 min.

The area

The counties it named.

The facts

Issued
Jun 29, 1990, 9:52 PM MDT (03:52 UTC)
Expired
Jun 29, 1990, 11:00 PM MDT
In force
68 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 00:00Z, 3.9 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 00:00Z on 1990-06-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 785 joules per kilogram.LCLEL10008507005003002001001 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, Denver, CO at 00:00Z on 1990-06-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -12 square meters per square second.193958Sfc1 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
785 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
3795 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
-12 m²/s²
0-3 km storm-relative helicity
-12 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 300352
SVRBFF
NEC123-300500-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING 
NATIONAL WEATHER SERVICE SCOTTSBLUFF NE
952 PM MDT FRI JUN 29 1990

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 1100 PM MDT FOR PEOPLE IN THE FOLLOWING 
COUNTY

   IN THE PANHANDLE OF NEBRASKA
      SOUTHERN MORRILL

AT 949 PM MDT...RADAR INDICATED A SEVERE THUNDERSTORM 15 MILES
SOUTHWEST OF BRIDGEPORT NEBRASKA...OR 30 MILES SOUTHEAST OF
SCOTTSBLUFF NEBRASKA IN THE SOUTHWEST CORNER OF MORRILL COUNTY.
THE STORM WAS MOVING NORTHEAST AT 10 MPH.

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.

IF THREATENING WEATHER APPROACHES...TAKE SHELTER INSIDE A REINFORCED
BUILDING.  STAY AWAY FROM WINDOWS.  A BASEMENT...INTERIOR HALLWAY...
OR A ROOM ON THE LOWEST FLOOR IS THE SAFEST PLACE IN MOST BUILDINGS.
MOTORISTS SHOULD AVOID LOW WATER CROSSINGS.

PEEK/PLISCHKE

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, Jun 29, 7:07 PM MDT, 2 hours 45 minutes before
NEZ011-290200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SCOTTSBLUFF NE
707 PM MDT FRI JUN 29 1990

...A STRONG THUNDERSTORM IS MOVING INTO THE NEBRASKA PANHANDLE...

AT 703 PM MDT...RADAR INDICATED A STRONG THUNDERSTORM 20 MILES
SOUTHEAST THROUGH 20 MILES SOUTH OF KIMBALL NEBRASKA...OR 20 MILES
TO 40 MILES SOUTHWEST OF SIDNEY NEBRASKA.  THE STORM EXTENDS FROM
EXTREME SOUTHERN KIMBALL AND EXTREME SOUTHWEST CHEYENNE COUNTIES OF THE
NEBRASKA PANHANDLE INTO NORTHEAST COLORADO.  THE STORM WAS MOVING
NORTHEAST AT 10 MPH.

BRIEF HEAVY RAIN...STRONG WIND AND HAIL ARE LIKELY WITH THIS STORM AS IT
MOVES ACROSS SOUTHEAST KIMBALL AND WESTERN CHEYENNE COUNTIES OF THE
NEBRASKA PANHANDLE UNTIL 800 PM MDT.
PLISCHKE
Special weather statement, Jun 29, 7:08 PM MDT, 2 hours 44 minutes before
NEZ011-300200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SCOTTSBLUFF NE
707 PM MDT FRI JUN 29 1990

...A STRONG THUNDERSTORM IS MOVING INTO THE NEBRASKA PANHANDLE...

AT 703 PM MDT...RADAR INDICATED A STRONG THUNDERSTORM 20 MILES
SOUTHEAST THROUGH 20 MILES SOUTH OF KIMBALL NEBRASKA...OR 20 MILES
TO 40 MILES SOUTHWEST OF SIDNEY NEBRASKA.  THE STORM EXTENDS FROM
EXTREME SOUTHERN KIMBALL AND EXTREME SOUTHWEST CHEYENNE COUNTIES OF THE
NEBRASKA PANHANDLE INTO NORTHEAST COLORADO.  THE STORM WAS MOVING
NORTHEAST AT 10 MPH.

BRIEF HEAVY RAIN...STRONG WIND AND HAIL ARE LIKELY WITH THIS STORM AS IT
MOVES ACROSS SOUTHEAST KIMBALL AND WESTERN CHEYENNE COUNTIES OF THE
NEBRASKA PANHANDLE UNTIL 800 PM MDT.
PLISCHKE
Special weather statement, Jun 29, 7:50 PM MDT, 2 hours 2 minutes before
WYZ017-300230-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
750 PM MDT FRI JUN 29 1990

...STRONG THUNDERSTORMS DEVELOP OVER EASTERN LARAMIE COUNTY...

AT 745 PM MDT WEATHER RADAR INDICATED A STRONG THUNDERSTORM ABOUT
20 MILES NORTHEAST OF CHEYENNE. THIS STORM WAS MOVING NORTHEAST AT
20 MILES AN HOUR.

THIS STORM WILL PRODUCE FREQUENT LIGHTNING AND GUSTY WINDS TO 40
MILES AN HOUR. THE STORM MAY ALSO PRODUCE SMALL HAIL AND IHEAVY
RAIN.

THUNDERSTORMS WILL CONTINUE ACROSS SOUTHEAST WYOMING UNTIL MIDNIGHT.
IF YOU OBSERVE A THUNDERSTORM...REMAIN INDOORS.

MENTZER
Special weather statement, Jun 29, 8:07 PM MDT, 1 hour 45 minutes before
NEZ011-300330-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SCOTTSBLUFF NE
805 PM MDT FRI JUN 29 1990

...STRONG THUNDERSTORMS ARE MOVING ACROSS THE SOUTHERN NEBRASKA
PANHANDLE...

AT 800 PM MDT...RADAR INDICATED THUNDERSTORMS IN THE NEBRASKA PANHANDLE.
THE STRONGEST STORM WAS LOCATED 18 MILES SOUTHEAST OF KIMBALL NEBRASKA
...OR 20 MILES WEST OF SIDNEY NEBRASKA IN THE SOUTHEAST CORNER OF
KIMBALL COUNTY AND THE SOUTHWEST CORNER OF CHEYENNE COUNTY.  THE
THUNDERSTORMS WERE MOVING NORTHEAST AT 10 MPH.

OTHER THUNDERSTORMS WERE ALSO IN SOUTHEAST WYOMING AND NORTHEAST
COLORADO.  A STORM IN SOUTHEAST WYOMING WAS LOCATED 30 MILES WEST
OF KIMBALL AND WAS MOVING EAST AT 10 MPH.  THIS STORM WI)LL ENTER WESTERN
KIMBALL COUNTY BETWEEN 830 PM AND 845 PM MDT.

BRIEF HEAVY RAIN...STRONG WIND AND HAIL ARE POSSIBLE WITH THE STORMS AS
THEY MOVE ACROSS KIMBALL AND CHEYENNE COUNTIES UNTIL 930 PM MDT.
PLISCHKE

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 29, 8:16 PM MDTSevere Thunderstorm WarningCYSCheyenne59 min
Jun 29, 9:36 PM MDTSevere Thunderstorm WarningCYSGarden69 min
Jun 29, 10:59 PM MDTSevere Thunderstorm WarningCYSGarden30 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.