Alert archive / Kansas / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 21, NWS Topeka, KS

May 18, 1989Atchison County, Kansas

NWS Topeka, KS issued this severe thunderstorm warning at May 18, 1989, 1:03 PM CDT for Atchison County, Kansas. It was in force for 42 min.

The area

The counties it named.

The facts

Issued
May 18, 1989, 1:03 PM CDT (18:03 UTC)
Expired
May 18, 1989, 1:45 PM CDT
In force
42 min
Issued by
NWS Topeka, KS
Area
Whole counties

County Atchison County, KS

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

Topeka, KS (KTOP), launched 12:00Z, 6.1 hours before the alert went out and 66 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, Topeka, KS at 12:00Z on 1989-05-18Temperature 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, Topeka, KS at 12:00Z on 1989-05-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 49 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
862 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
49 m²/s²
0-3 km storm-relative helicity
64 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 KTOP 181805
SVRTOP
KSC005-181845-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TOPEKA KS
103 PM CDT THU MAY 18 1989
 
THE NATIONAL WEATHER SERVICE IN TOPEKA HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  145 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN NORTHEAST KANSAS
          ...WESTERN ATCHISON
 
AT 100 PM THE JEFFERSON COUNTY SHERIFF REPORTED GOLF BALL SIZED HAIL 6
MILES WEST OF VALLEY FALLS OR ABOUT 20 MILES WEST-SOUTHWEST OF
ATCHISON KANSAS. THE STORM WAS MOVING NORTHEAST AT 35 MPH AND WILL BE
MOVING THROUGH EFFINGHAM AND MUSCOTAH BY 130 PM CDT.
 
 
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM DANGEROUS WEATHER
IN A STRONG BUILDING.  DAMAGING WIND...LARGE HAIL...VERY HEAVY
RAIN... AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE
THUNDERSTORMS. STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS
PASSED.

The office that day

Everything else NWS Topeka, KS issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 18, 2:40 PM CDTTornado WarningTOPClay, Washington50 min

Nearby

Severe Thunderstorm Warnings in Kansas, 1989Every severe thunderstorm warning 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.