Severe Thunderstorm Warning 149, NWS Des Moines, IA

IAZALL-122015-

SPECIAL WEATHER STATEMENT AND WEATHER UPDATE FOR IOWA
NATIONAL WEATHER SERVICE DES MOINES IA
215 PM CDT THU SEP 12 1991

AT 205 PM CDT...A 10-MILE WIDE BAND OF STRONG THUNDERSTORMS WAS FROM 45
MILES NORTHWEST OF DES MOINES NEAR COON RAPIDS TO 10 MILES SOUTHEAST OF
FORT DODGE NEAR LEHIGH.  VERY HEAVY RAIN AND STRONG GUSTY WINDS CAN BE
EXPECTED WITH THE PASSAGE OF THESE STORMS.  0.90 INCH OF RAIN WAS
RECEIVED IN 30 MINUTES AT DENISON AS A STORM PASSED THROUGH THERE.

ALSO...SCATTERED THUNDERSTORMS AND SHOWERS WERE OVER NORTHWEST IOWA...
GENERALLY NORTHWEST OF A LINE FROM GUTHRIE CENTER TO IOWA FALLS.

MOVEMENT WAS EAST AT 35 MILES AN HOUR.

THE ONE TO TWO HOUR OUTLOOK IS FOR CONTINUED SCATTERED THUNDERSTORMS AND
SHOWERS OVER NORTHWEST IOWA SPREADING INTO NORTH CENTRAL IOWA.

BURKE/MILLER

IAZALL-122045-

SPECIAL WEATER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE DES MOINES IA
248 PM CDT THU SEP 12 1991

...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 9 PM CDT FOR MUCH OF
CENTRAL AND EASTERN IOWA.

AT 232 PM...AN INTENSE THUNDERSTORM 10 MILES IN DIAMETER WAS 35 MILES
NORTH OF DES MOINES JUST NORTHEAST OF BOONE.  TORRENTIAL RAIN AND STRONG
WINDS CAN BE EXPECTED NEAR THIS STORM.  WINDS GUSTING TO 40 MPH WERE
REPORTED AT BOONE AT 230 PM.

THIS STORM WAS WITH A 10 MILE-WIDE BAND OF STRONG STORMS FROM 30 MILES
NORTHWEST OF DES MOINES TO JUST SOUTHEAST OF STORY CITY.  OTHER SHOWERS
WERE SCATTERED IN AN AREA 60 MILES WIDE NORTHWEST OF A LINE FROM NEAR
REDFIELD TO ELDORA.

MOVEMENT WAS EAST AT 35 MILES AN HOUR.
/
BURKE

IAZALL-122015-

SPECIAL WEATHER STATEMENT AND WEATHER UPDATE FOR IOWA
NATIONAL WEATHER SERVICE DES MOINES IA
315 PM CDT THU SEP 12 1991

...A SEVERE THUNDERSTORM WATCH FOR MUCH OF CENTRAL AND EASTERN IOWA
UNTIL 9PM...

AT 305 PM CDT...INTENSE THUNDERSTORMS WERE LOCATED OVER CENTRAL IOWA.
THE FIRST STORM WAS LOCATED 35 MILES NORTH NORTHEAST OF DES MOINES...
NEAR NEVADA. THIS STORM COULD PRODUCE EXTREMELY HEAVY RAIN...DAMAGING
THUNDERSTORMS WINDS AND FREQUENT DEADLY LIGHTNING. THE SECOND INTENSE
STORM WAS LOCATED IN THE NORTHWEST SUBURBS OF DES MOINES. THIS STORM
COULD ALSO PRODUCE EXTREMELY HEAVY RAINS AND DAMAGING THUNDERSTORM
WINDS ALONG WITH DEADLY LIGHTNING.

THESE STORMS WERE PART OF AN EXPANDING AREA OF SHOWERS AND STORMS
THAT EXTENDED FROM DES MOINES NORTH TO MASON CITY. THE LEADING EDGE OF
THIS AREA EXTENDED FROM DES MOINES NORTHEAST TO CHARLES CITY.

THE SHOWERS AND STORMS WERE MOVING EAST AT 30 TO 35 MILES AN HOUR.

THE O`UTLOOK THROUGH 4PM...THE AREA OF SHOWERS AND STORMS WILL CONTINUE
AN EASTWARD MOVEMENT...HOWEVER SOUTHWARD DEVELOPMENT ON THIS AREA OF
THUNDERSTORMS.

BARLOW/MILLER

IAZ002-003-007-122100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WATERLOO IA
310 PM CDT THU SEP 12 1991

...SEVERE THUNDERSTORM WATCH FOR PARTS OF NORTHEAST IOWA UNTIL
900 PM CDT...

AT 305 PM THUNDERSTORMS WERE LOCATED IN NORTH CENTRAL AND NORTHEAST
IOWA GENERALLY WEST OF A LINE FROM NEW HAMPTON...ABOUT 30 MILES NORTH
OF WATERLOO...TO REINBECK...15 MILES SOUTHWEST OF WATERLOO. THE
STRONGEST STORM WAS LOCATED ABOUT 15 MILES NORTHWEST OF WATERLOO. THE
THUNDERSTORMS WERE MOVING EAST AT 35 MILES AN HOUR.

OTHER INTENSE THUNDERSTORMS WERE LOCATED IN CENTRAL IOWA.

THE THUNDERSTORMS WILL MOVE INTO THE WAVERLY AREA BY 330 PM AND INTO
THE WATERLOO/CEDAR FALLS AREA BY 400 PM. YOU SHOULD BE ALERT TO VERY
HEAVY RAIN...SMALL HAIL AND STRONG GUSTY WINDS AS THESE STORMS MOVE
INTO YOUR AREA.

IAZ002-003-007-122200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WATERLOO IA
420 PM CDT THU SEP 12 1991

...SEVERE THUNDERSTORM WATCH FOR PARTS OF NORTHEAST IOWA UNTIL
900 PM CDT...

AT 415 PM INTENSE THUNDERSTORMS WERE LOCATED IN NORTHEAST IOWA FROM
NEAR WAVERLY...10 MILES NORTH OF WATERLOO TO NEAR LA PORTE CITY...
ABOUT 10 MILES SOUTHEAST OF WATERLOO. THESE THUNDERSTORMS WERE MOVING
EAST AT 40 MILES AN HOUR.

THESE THUNDERSTORM WILL BE MOVING INTO BUCHANAN COUNTY BY 500 PM.
PEOPLE IN EASTERN BLACKHAWK AND SOUTHEAST BREMER COUNTY SHOULD BE ALERT
FOR LARGE HAIL...STRONG DAMAGING WINDS AND BRIEF HWAVY RAIN AS THESE
STORMS MOVE THROUGH THEIR AREA.

OTHER SCATTERED SHOWERS AND THUNDERSTORMS CONTINUED IN NORTHEAST IOWA
GENERALLY WEST OF A LINE FROM LA PORTE CITY TO FAYETTE.

IAZALL-122135-

SPECIAL WEATER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE DES MOINES IA
436 PM CDT THU SEP 12 1991

...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 9 PM CDT FOR MUCH OF
CENTRAL AND EASTERN IOWA.

AT 430 PM...20 MILE WIDE BAND OF INTENSE THUNDERSTORMS EXTENDED FROM
10 MILES SOUTHEAST OF WATERLOO SOUTH INTO SOUTH CENTRAL BENTON COUNTY
THEN SOUTHWEST TO NEAR GRINNELL. THIS BAND OF VERY POWERFULL STORMS
WAS MOVING EAST AT 60 MILES AN HOUR. PEOPLE IN THE PATH OF THIS CLUSTER
OF STORMS SHOULD MOVE TO A PLACE OF SHELTER AS THIS BAND APPROACHES.

THESE THUNDERSTORMS WERE PART OF A 60 MILE WIDE BAND OF SHOWERS AND
STORMS THAT EXTENDED FROM NEW HAMPTON...IN NORTHEAST IOWA...SOUTHWEST
TO 5 MILES NORTHEAST OF PELLA.

A SMALL CLUSTER OF SHOWERS AND ISOLATED THUNDERSTORMS WAS LOCATED OVER
NORTHWEST IOWA AROUND CHEROKEE...STORM LAKE...POCOHONTAS AND GILMORE
CITY. THESE SHOWERS AND STORMS WERE MOVING EAST AT 30 MILES AN MHOUR.

BARLOW/MARTIN