Alert archive / Nebraska / Severe Thunderstorm Warnings in 1991

Severe Thunderstorm Warning 21, NWS North Platte, NE

May 26, 1991Boone County, Wheeler County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at May 26, 1991, 11:58 PM CDT for Boone County, Wheeler County, Nebraska. It was in force for 62 min.

The area

The counties it named.

The facts

Issued
May 26, 1991, 11:58 PM CDT (04:58 UTC)
Expired
May 27, 1991, 1:00 AM CDT
In force
62 min
Issued by
NWS North Platte, NE
Area
Whole counties

Counties Boone County, NE, Wheeler County, NE

The nearest sounding before it

Omaha, NE (KOVN), launched 00:00Z, 5.0 hours before the alert went out and 169 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, Omaha, NE at 00:00Z on 1991-05-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 562 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, Omaha, NE at 00:00Z on 1991-05-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 71 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
562 J/kg
Mixed-layer CIN
-87 J/kg
Mixed-layer LCL
1608 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
71 m²/s²
0-3 km storm-relative helicity
127 m²/s²
Significant tornado parameter
0.1
Supercell composite
2.2

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KOFK 270458
SVROFK
NEC183-011-270600-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING 
NATIONAL WEATHER SERVICE NORFOLK NE
1158 PM CDT SUN MAY 26 1991

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 100 AM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES

   IN THE NORTH CENTRAL PART OF NEBRASKA
      SOUTHEAST WHEELER...

   IN THE NORTHEAST PART OF NEBRASKA
      NORTHERN BOONE...

AT 1154 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM ABOUT 60
MILES WEST SOUTHWEST OF NORFOLK IN SOUTHEAST WHEELER COUNTY OF
NORTHCENTRAL NEBRASKA JUST SOUTH OF BARTLETT.  THIS STRORM WAS
MOVING TO THE EAST NORTHEAST AT AROUND 35 TO 40 MILES AN HOUR.

PEOPLE IN THE PATH OF THIS SHOULD TAKE SHELTER IMMEDIATELY.
PREPARE FOR DAMAGING WINDS...LARGE HAIL...DEADLY LIGHTNING AND
VERY HEAVY RAIN THAT CAN QUICKLY FLOOD A LOW LYING AREA.
REMEMBER SEVERE THUNDERSTORMS CAN ALSO PRODUCE A TORNADO WITH
LITTLE OR NO WARNING.d

 NO WATCHES ARE IN EFFECT FOR THE AREA.

 VA0457Z

Nearby

Severe Thunderstorm Warnings in Nebraska, 1991Every severe thunderstorm warning in 1991

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.