Severe Thunderstorm Warning 39, NWS Des Moines, IA

Issued

Apr 27, 1989, 11:05 PM CDT (04:05 UTC)

Expired

Apr 27, 1989, 11:45 PM CDT

In force

40 min

Issued by

NWS Des Moines, IA

Area

Whole counties

Counties Dallas County, IA, Polk County, IA, Warren County, IA

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

000 
TTAA00 KDSM 280405
SVRDSM
IAC153-181-049-280445-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
1105 PM CDT THU APR 27 1989

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 1145 PM CDT FOR PEOPLE IN THE FOLLOWING
COUNTIES

   IN THE CENTRAL PART OF IOWA
      POLK...DALLAS...

   IN THE SOUTH CENTRAL PART OF IOWA
      WARREN...

AT 1105 PM...A CLUSTER OF SEVERE THUNDERSTORMS WAS INDICATED
ON RADAR FROM CENTRAL DALLAS COUNTY NEAR DALLAS CENTER...
ABOUT 20 MILES WEST OF DES MOINES...TO CENTRAL MADISON COUNTY NEAR
WINTERSET...30 MILES SOUTHWEST OF DES MOINES.

THE CLUSTER OF STORMS WAS MOVING EAST AT 20 TO 30 MILES AN HOUR..
AND WILL BE AFFECTING THE CITIES OF DES MOINES...DALLAS CENTER...
LAKEWOOD...NORWALK...CARLISLE...AND INDIANOLA.

REMEMBER...SEVERE THUNDERSTORMS PRODUCE WINDS IN EXCESS OF 60 MILES
AN HOUR...LARGE HAIL...DANGEROUS LIGHTNING...AND VERY HEAVY RAINS.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOU HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT
DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

IN ADDITION...THESE STORMS CAN AND OCCASIONAtLLY DO PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCED WARNING SO BE ON THE LOOKOUT.

STAFF/WSFO DSM

In the hours before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
815 PM CDT THU APR 27 1989

...STRONG THUNDERSTORMS MOVING INTO CRAWFORD COUNTY IN WEST CENTRAL
   IOWA...

AT 815 PM...SEVERAL STRONG THUNDERSTORMS WERE MOVING THROUGH CRAWFORD
COUNTY.  ONE STORM WAS OVER SOUTHEAST CRAWFORD COUNTY...WHILE ANOTHER
CLUSTER OF STORMS WAS OVER NORTHWEST SHELBY AND EASTERN HARRISON
COUNTIES.  THESE AREAS ARE SOME 40 TO 60 MILES NORTHEAST OF COUNCIL
BLUFFS.

SO FAR...THESE STORMS HAVE PRODUCED LOTS OF PEA TO MARBLE SIZED
HAIL...AND WINDS OF 30 TO 40 MILES AN HOUR.

ALTHOUGH NO SEVERE WEATHER IS INDICATED AT THIS TIME...PEOPLE IN
CRAWFORD COUNTY SHOULD REMAIN ALERT.  REMEMBER...A TORNADO- WATCH IS
IN EFFECT UNTIL 1 AM.
<
TRUETT

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE DES MOINES IA
945 PM CDT THU APR 27 1989

...A TORNADO WATCH REMAINS IN EFFECT FOR MUCH OF WESTERN IOWA THIS
THURSDAY EVENING AND EARLY FRIDAY MORNING...

NO SEVERE WEATHER WAS REPORTED IN IOWA BETWEEN 830PM AND 930 PM.

AT 932 PM CDT...NUMEROUS SHOWERS AND STRONG THUNDERSTORMS CONTINUED
OVER ABOUT THE WEST ONE HALF OF IOWA.

THE LEADING...OR EAST EDGE OF THE PRECIPITATION IN IOWA...EXTENDED
FROM THE IOWA/MISSOURI BORDER 25 MILES WEST OF LAMONI...OR 75 MILES
SOUTHWEST OF DES MOINES....TO 10 MILES WEST OF DES MOINES...TO THE
IOWA/MINNESOTA BORDER NEAR ESTHERVILLE...OR 100 MILES NORTHEAST OF
SIOUX CITY.

THE SHOWERS AND THUNDERSTORMS WERE MOVING NORTHEAST AT 30 MILES AN
HOUR...WHILE THE ENTIRE AREA OF RAINFALL WAS SHIFTING SOUTHEAST AT
15 MILES AN HOUR.

THE LARGE AMOUNTS OF RAINFALL FROM SOME OF THESE THUNDERSTORMS COULD
CAUSE SOME STREET AN3D LOW LYING AREA FLOODING.

BARLOW/MARTIN

Severe Thunderstorm Warnings in Iowa, 1989Every severe thunderstorm warning in 1989

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.