Alert archive / Nebraska / Tornado Warnings in 1990

Tornado Warning 4, NWS North Platte, NE

April 25, 1990Red Willow County, Nebraska

NWS North Platte, NE issued this tornado warning at Apr 25, 1990, 8:04 PM CDT for Red Willow County, Nebraska. It was in force for 26 min.

The area

The counties it named.

The facts

Issued
Apr 25, 1990, 8:04 PM CDT (01:04 UTC)
Expired
Apr 25, 1990, 8:30 PM CDT
In force
26 min
Issued by
NWS North Platte, NE
Area
Whole counties

County Red Willow 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 00:00Z, 1.1 hours before the alert went out and 107 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 00:00Z on 1990-04-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 609 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 00:00Z on 1990-04-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 31 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
609 J/kg
Mixed-layer CIN
-17 J/kg
Mixed-layer LCL
1162 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
31 m²/s²
0-3 km storm-relative helicity
55 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KLBF 260104
TORLBF
NEC145-260130-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
TORNADO WARNING 
NATIONAL WEATHER SERVICE NORTH PLATTE NE
804 PM CDT WED APR 25 1990

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING 
EFFECTIVE UNTIL 830 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES

   IN THE SOUTHWEST PART OF NEBRASKA
      THE CITY OF MCCOOK...RED-WILLOW

AT (8 PM CDT)  A  (TORNADO    ) WAS REPORTED 18 MILES SOUTHWEST
OF MCCOOK NEBRASKA. MOVEMENT SHOULD BE NORTH AT 25 MPH. TOWNS
INCLUDED ARE DANBURY AND INDIANOLA.

IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE TO BE IS IN
A BASEMENT.  GET UNDER A WORKBENCH OR PIECE OF STURDY FURNITURE.
IF NO BASEMENT IS AVAILABLE.
..FIND SHELTER IN AN INTERIOR ROOM
SUCH AS A CLOSET ON THE LOWEST FLOOR.  USE BLANKETS...PILLOWS...
OR CUSHIONS TO COVER YOUR BODY.  AVOID WINDOWS.

Nearby

Tornado Warnings in Nebraska, 1990Every tornado warning in 1990Tornadoes 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.