Alert archive / Nebraska / Tornado Warnings in 1989

Tornado Warning 4, NWS Sioux Falls, SD

May 28, 1989Thurston County, Nebraska

NWS Sioux Falls, SD issued this tornado warning at May 28, 1989, 9:35 PM CDT for Thurston County, Nebraska. It was in force for 25 min.

The area

The counties it named.

The facts

Issued
May 28, 1989, 9:35 PM CDT (02:35 UTC)
Expired
May 28, 1989, 10:00 PM CDT
In force
25 min
Issued by
NWS Sioux Falls, SD
Area
Whole counties

County Thurston 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

Omaha, NE (KOAX), launched 00:00Z, 2.6 hours before the alert went out and 94 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 1989-05-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 1989-05-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 206 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
3613 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
206 m²/s²
0-3 km storm-relative helicity
259 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 KSUX 290235
TORSUX
NEC173-290300-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
TORNADO WARNING 
NATIONAL WEATHER SERVICE SIOUX CITY IA
935 PM CDT SUN MAY 28 1989

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING 
EFFECTIVE UNTIL 1000 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY

   IN THE NORTHEAST PART OF NEBRASKA
      THURSTON

AT 911 PM CDT RADAR INDICATED A TORNADO IN NORTHERN CUMING COUNTY
NEBRASKA MOVING NORTHEAST AT 10 MILES AN HOUR. THIS STORM WAS JUST
 SW OF PENDER OR ABOUT 25 MILES SOUTHWEST OF SIOUX CITY.
PERSONS IN THURSTON COUNTY AND PENDER SHOULD TAKE COVER
IMMEDIATELY.

THIS IS A DANGEROUS STORM. TAKE COVER IMMEDIATELY. IF YOU ARE IN A
STRONG BUILDING GO TO AN INTERIOR ROOM ON THE LOWEST FLOOR. AVOID
WINDOWS. ABANDON CARS AND MOBILE HOMES FOR A REINFORCED BUILDING OR
GET INTO A DITCH OR DEPRESSION...COVER YOUR HEAD WITH YOUR HANDS.

ASK THE NEAREST LAW ENFORCEMENT AGENCY TO RELAY YOUR REPORTS OFH
SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE.

KROPP

The office that day

Everything else NWS Sioux Falls, SD issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 28, 10:46 PM CDTSevere Thunderstorm WarningFSDDakota, Thurston59 min

Nearby

Tornado Warnings in Nebraska, 1989Every tornado warning in 1989Tornadoes in 1989

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.