Severe Thunderstorm Warning 169, NWS Des Moines, IA

IAZALL-231830-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE DES MOINES IA
1240 PM CDT FRI AUG 24 1990

AT 1230 PM...SCATTERED SHOWERS AND WIDELY SCATTERED VERY STRONG
THUNDERSTORMS WERE INDICATED IN PARTS OF SOUTHWEST...WEST CENTRAL
...NORTHWEST AND NORTH CENTRAL IOWA.  THE AREA WAS WEST OF A LINE
FROM 30 MILES NORTHWEST OF MASON CITY...TO 55 MILES WEST OF DES
MOINES...TO THE SOUTHWEST CORNER OF THE STATE.  THE STRONGEST STORM
AND HEAVIEST RAIN WAS IN SOUTHWEST POCAHONTAS COUNTY...ABOUT 80 MILES
SOUTHWEST OF MASON CITY.  BRIEF...VERY HEAVY RAIN...DANGEROUS CLOUD
TO GROUND LIGHTNING AND GUSTY WIND TO 35 MILES AN HOUR WILL BE IN
THE VICINITY OF POCAHONTAS BY 1PM.

OTHER STRONG STORMS WERE FROM NEAR MANNING TO SOUTHWEST OF ATLANTIC
OR ABOUT 65 TO 70 MILES WEST OF DES MOINES.

THE SHOWERS AND THUNDERSTORMS WERE MOVING NORTHEAST AT 30 MILES AN
HOUR.

HUTTON

IAZALL-242100-

SPECIAL WEATHER STATEMENT AND WEATHER UPDATE FOR IOWA
NATIONAL WEATHER SERVICE DES MOINES IA
315 PM CDT FRI AUG 24 1990

A LINE OF STRONG THUNDERSTORMS EXTENDED FROM NORTH CENTRAL INTO CENTRAL
IOWA.  THIS LINE WAS 10 MILES WIDE AND STRETCHED FROM BELMOND THROUGH
STORY CITY...AMES AND DALLAS CENTER TO GREENFIELD.  ALONG WITH THE HEAVY
RAINS...GUSTY WINDS OF 30 TO 40 MILES AN HOUR ARE LIKELY.  MOVEMENT WAS
EAST AT 15 TO 20 MILES AN HOUR.

BY 430 PM...THE LINE OF STORMS WILL EXTEND FROM ACKELY THROUGH ELDORA...
SAYLORVILLE LAKE AND DES MOINES TO WINTERSET.

THOSE PEOPLE ENJOYING THE STATE FAIR AND THE RECREATIONAL FACILITIES AT
SAYLORVILLE LAKE SHOULD BE PREPARED TO SEEK SHELTEcR.

KS

IAZ010-242200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
425 PM CDT FRI AUG 24 1990

...STRONG THUNDERSTORMS OVER CENTRAL IOWA...

AT 425 PM...WEATHER RADAR INDICATED A STRONG THUNDERSTORM OVER NORTHWEST
POLK COUNTY AT SAYLORVILLE LAKE...ABOUT 15 MILES NORTHWEST OF DES
MOINES.

AT THIS TIME...THE STORM DID NOT APPEAR TO BE SEVERE...BUT IT WAS
PRODUCING EXTREMELY HEAVY RAINS...DANGEROUS LIGHTNING...AND SOME SMALL
HAIL.

THE STORM WAS MOVING NORTHEAST...AND WILL MOVE INTO SOUTHERN STORY
COUNTY BETWEEN 430 AND 445 PM.  PEOPLE OVER NORTHWEST POLK AND SOUTHERN
STORY COUNTIES SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER
CONDITIONS.  REMEMBER...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR
CENTRAL IOWA UNTIL 10 PM.

TRUETT

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SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE DES MOINES IA
445 PM CDT FRI AUG 24 1990

AT 433 PM...VERY STRONG THUNDERSTORMS WERE INDICATED IN PARTS OF CENTRAL
AND SOUTHEAST IOWA.  THE VERY STRONG STORMS WERE 15 MILES NORTHWEST OF
DES MOINES...JUST EAST OF KNOXVILLE AND JUST SOUTH OF MONTEZUMA.  VERY
HEAVY RAIN...SMALL HAIL AND WIND TO 50 MILES AN HOUR ARE POSSIBLE WITH
THE STRONGER STORMS.  A STRONG THUNDERSTORM PRODUCED 1.27 INCHES OF RAIN
IN 15 MINUTES IN ADEL...ABOUT 20 MILES WEST OF DES MOINES...SHORTLY
AFTER 4PM.

OTHER SCATTERED SHOWERS AND THUNDERSTORMS WERE NORTH OF A LINE FROM 10
MILES SOUTH OF SIOUX CITY...THROUGH DES MOINES TO OTTUMWA.  THE AREA OF
PRECIPITATION WAS WEST OF A LINE FROM OTTUMWA...THROUGH WATERLOO TO THE
IOWA BORDER NORTH OF WATERLOO.

THE SHOWERS AND THUNDERSTORMS WERE MOVING NORTHEAST AT 25 TO 30 MILES
AN HOUR.

HUTTON

IAZALL-242230-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE DES MOINES IA
445 PM CDT FRI AUG 24 1990

...SEVERE THUNDERSTORM WATCH SOUTH HALF OF IOWA UNTIL 10PM...

AT 433 PM...VERY STRONG THUNDERSTORMS WERE INDICATED IN PARTS OF CENTRAL
AND SOUTHEAST IOWA.  THE VERY STRONG STORMS WERE 15 MILES NORTHWEST OF
DES MOINES...JUST EAST OF KNOXVILLE AND JUST SOUTH OF MONTEZUMA.  VERY
HEAVY RAIN...SMALL HAIL AND WIND TO 50 MILES AN HOUR ARE POSSIBLE WITH
THE STRONGER STORMS.  A STRONG THUNDERSTORM PRODUCED 1.27 INCHES OF RAIN
IN 15 MINUTES IN ADEL...ABOUT 20 MILES WEST OF DES MOINES...SHORTLY
AFTER 4PM.

OTHER SCATTERED SHOWERS AND THUNDERSTORMS WERE NORTH OF A LINE FROM 10
MILES SOUTH OF SIOUX CITY...THROUGH DES MOINES TO OTTUMWA.  THE AREA OF
PRECIPITATION WAS WEST OF A LINE FROM OTTUMWA...THROUGH WATERLOO TO THE
IOWA BORDER NORTH OF WATERLOO.

THE SHOWERS AND THUNDESTORMS WERE MOVING NORTHEAST AT 25 TO 30 MILES
AN HOUR.

HUTTON

IAZALL-242300-

SPECIAL WEATHER STATEMENT AND WEATHER UPDATE FOR IOWA
NATIONAL WEATHER SERVICE DES MOINES IA
511 PM CDT FRI AUG 24 1990

...SEVERE THUNDERSTORM WATCH SOUTH HALF OF IOWA UNTIL 10PM...

AT 510 PM...VERY STRONG THUNDERSTORMS WERE INDICATED IN PARTS OF CENTRAL
AND SOUTHEAST IOWA.  THE STORMS WERE JUST NORTHEAST OF NEWTON...JUST
NORTHEAST OF MONTEZUMA AND 5 TO 10 MILES NORTH OF OTTUMWA.  VERY HEAVY
RAIN...SMALL HAIL...GUSTY WIND TO 50 MILES AN HOUR ALONG WITH DANGEROUS
CLOUD TO GROUND LIGHTNING CAN BE EXPECTED.  IN ADDITION...STREET FLOODING
AND FLOODING OF LOW AREAS IS LIKELY.

OTHER SCATTERED SHOWERS AND THUNDERSTORMS WERE IN PART OF NORTHWEST...
NORTHEAST AND EAST CENTRAL IOWA....MAINLY FROM 15 MILES NORTHEAST OF DES
MOINES TO OTTUMWA...AND FROM 30 MILES SOUTHWEST TO 20 MILES NORTH OF
WATERLOO.

THE SHOWERS AND THUNDERSTORMS WERE MOVING NORTHEAST AT 25 MILES AN HOUR.

HUTTON