Alert archive / Nebraska / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 21, NWS Cheyenne, WY

June 1, 1990Garden County, Nebraska

NWS Cheyenne, WY issued this severe thunderstorm warning at Jun 1, 1990, 3:18 PM MDT for Garden County, Nebraska. It was in force for 22 min.

The area

The counties it named.

The facts

Issued
Jun 1, 1990, 3:18 PM MDT (21:18 UTC)
Expired
Jun 1, 1990, 3:40 PM MDT
In force
22 min
Issued by
NWS Cheyenne, WY
Area
Whole counties

County Garden 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

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 9.3 hours before the alert went out and 155 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, N. Platte/Lee Bi, NE at 12:00Z on 1990-06-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1619 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, N. Platte/Lee Bi, NE at 12:00Z on 1990-06-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 183 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
1619 J/kg
Mixed-layer CIN
-53 J/kg
Mixed-layer LCL
612 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
183 m²/s²
0-3 km storm-relative helicity
164 m²/s²
Significant tornado parameter
1.0
Supercell composite
5.2

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KBFF 012118
SVRBFF
NEC069-012215-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING 
NATIONAL WEATHER SERVICE SCOTTSBLUFF NE
318 PM MDT FRI JUN 1 1990

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 415 PM MDT FOR PEOPLE IN THE FOLLOWING 
COUNTY

   IN THE PANHANDLE OF NEBRASKA
      NORTHEAST GARDEN

AT 315PM MDT...A SEVERE THUNDERSTORM WAS 30 MILES SOUTHEAST OF
ALLIANCE NEBRASKA IN NORTHEAST GARDEN COUNTY.  THE STORM WAS MOVING
NORTH AROUND 15 MILES AN HOUR.

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.

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

PFEIFFER

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 1, 1:06 PM MDTSevere Thunderstorm WarningCYSSheridan69 min
Jun 1, 2:17 PM MDTSevere Thunderstorm WarningCYSGarden58 min
Jun 1, 2:18 PM MDTSevere Thunderstorm WarningCYSSheridan32 min
Jun 1, 3:15 PM MDTSevere Thunderstorm WarningCYSSheridan60 min
Jun 1, 4:16 PM MDTSevere Thunderstorm WarningCYSSheridan59 min
Jun 1, 4:51 PM MDTSevere Thunderstorm WarningCYSBox Butte, Sheridan54 min
Jun 1, 5:33 PM MDTSevere Thunderstorm WarningCYSMorrill57 min
Jun 1, 5:48 PM MDTTornado WarningCYSMorrill27 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.