Severe Thunderstorm Warning 18, NWS Des Moines, IA

IAZALL-132130-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE DES MOINES IA
330 PM CST TUE MAR 13 1990

...TORNADO WATCH FOR WESTERN HALF UNTIL 6PM...SEVERE THUNDERSTORM
WATCH FOR EASTERN HALF UNTIL 8PM...
...FLASH FLOOD WATCH FOR THE SOUTH HALF OF IOWA TODAY...

AT 310 PM...INTENSE THUNDERSTORMS WERE LOCATED IN NORTHWEST AND
NORTH CENTRAL IOWA...IN THE FORT DODGE...HUMBOLDT AND LUVERNE AREA
OR 40 TO 50 MILES SOUTHWEST OF MASON CITY.

ALSO IN NORTHEAST IOWA IN THE MANCHESTER AREA OR 40 MILES WEST OF
DUBUQUE.

ANOTHER INTENSE THUNDERSTORMS WAS IN SOUTHEAST IOWA IN SOUTHERN DAVIS
COUNTY...10 MILES SOUTHWEST OF BLOOMFIELD.

LARGE HAIL...EXTREMELY HEAVY RAIN AND WINDS OF 30 TO 40 MILES AN HOUR
CAN BE EXPECTED WITH THESE STORMS.

NO SEVERE WEATHER HAVE BEEN REPORTED WITH STORMS AS OF 315 PM CST.

THE INTENSE THUNDERSTORMS ARE PART OF A LARGE AREA OF SHOWERS AND
THUNDERSTORMS OVER THE NORTHEAST HALF OF IOWA.

THE SHOWERS AND STORMS WERE MOVING NORTH NORTHEAST AT 45 MILES AN HOUR.

MG/KS

IAZ002-132200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
335 PM CST TUE MAR 13 1990

...STRONG THUNDERSTORM OCCURRING OVER KOSSUTH COUNTY...

AT 332 PM...WEATHER RADAR IN DES MOINES INDICATED A STRONG THUNDERSTORM
OVER SOUTHERN KOSSUTH COUNTY NEAR ALGONA...OR ABOUT 50 MILES WEST OF
MASON CITY.

THIS STORM WILL PRODUCE VERY HEAVY RAINS IN A SHORT PERIOD OF
TIME...ALONG WITH SOME SMALL HAIL AND WINDS OF 30 TO 40 MILES AN
HOUR...AS IT MOVES NORTHEAST AT 45 MILES AN HOUR...INTO THE NORTHERN
PART OF KOSSUTH COUNTY.

REMEMBER...A TORNADO WATCH REMAINS IN EFFECT FOR NORTH CENTRAL IOWA
UNTIL 6 PM.

KS/TRUETT

IA007-132215

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WATERLOO IA
345 PM CST TUE MAR 13 1990

   ...STRONG THUNDERSTORM MOVING INTO SOUTHERN BLACK HAWK COUNTY...

AT 240 PM CST WEATHER RADAR SHOWED A STRONG THUNDERSTORM AT HUDSON IOWA...
15 MILES SOUTH OF THE CITY OF WATERLOO.
THIS THUNDERSTORM WAS MOVING NORTH AT 40 MILES AN HOUR AND WILL
PRODUCE VERY HEAVY RAIN AND POSSIBLY SMALL HAIL AS IT PASSES THROUGH
BLACK HAWK COUNTY.

THE THU!NDERSTORM SHOULD BE EXIT BLACK HAWK COUNTY BY 415 PM THIS
AFTERNOON.

IAZALL-132130-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE DES MOINES IA
355 PM CST TUE MAR 13 1990

...TORNADO WATCH FOR WESTERN HALF UNTIL 6PM...SEVERE THUNDERSTORM
WATCH FOR EASTERN HALF UNTIL 8PM...
...FLASH FLOOD WATCH FOR THE SOUTH HALF OF IOWA TODAY...

AT 333 PM...AN VERY INTENSE THUNDERSTORM WAS JUST EAST OF BLOOMFIELD
IN DAVIS COUNTY OF SOUTHEAST IOWA.

ANOTHER VERY INTENSE THUNDERSTORM WAS NEAR ALGONA IN SOUTHERN KOSSUTH
COUNTY OF NORTH CENTRAL IOWA.

OTHER STRONG THUNDERSTORMS WERE 30 TO 40 MILES WEST OF CEDAR RAPIDS OF
EAST CENTRAL IOWA...AND STRONG THUNDERSTORMS WERE 20 MILES SOUTHWEST
AND ALSO 35 MILES NORTH OF WATERLOO OF NORTHEAST IOWA.

THESE STORMS MAY PRODUCE LARGE HAIL...STRONG GUSTY WINDS AND VERY HEAVY
RAINS.

THESE INTENSE AND STRONG THUNDERSTORMS WERE PART OF A LARGER AREA
OF SHOWERS AND THUNDERSTORMS OVER THE NORTHEAST HALF OF THE STATE
...FROM THE NOTHWEST CORNER OF IOWA TO THAE IOWA/MISSOURI BORDER
SOUTH OF OTTUMWA.

THE SHOWERS AND STORMS WERE MOVING NORTH NORTHEAST AT 45 MILES AN HOUR.

MG/KS

IAZALL-132300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
420 PM CST TUE MAR 13 1990

...TORNADO WATCH FOR WESTERN HALF UNTIL 6PM...SEVERE THUNDERSTORM
WATCH FOR EASTERN HALF UNTIL 8PM...
...FLASH FLOOD WATCH FOR ALL BUT FAR NORTHWEST IOWA TONIGHT...

AT 405 PM...INTENSE THUNDERSTORMS WERE LOCATED OVER SOUTHEAST...EAST
CENTRAL...NORTHEAST AND SOUTHWEST IOWA. THE FIRST STORM WAS LOCATED
OVER SOUTHEAST IOWA 15 MILES EAST OF OTTUMWA...OR 3 MILES WEST OF
FAIRFIELD. THE NEXT STORM WAS LOCATED ABOUT 10 MILES NORTH OF CEDAR
RAPIDS...STILL ANOTHER STORM WAS LOCATED 15 MILES NORTH OF WATERLOO
APPROACHING SUMNER. THE LAST STORM WAS LOCATED OVER SOUTHWEST IOWA
35 MILES SOUTHEAST OF OMAHA/COUNCIL BLUFFS...OR 5 MILES NORTHEAST
OF RED OAK.

THESE STORMS WILL PRODUCE EXTREMELY HEAVY RAIN AND MARBLE SIZED HAIL.

THESE STORMS WERE PART OF TWO LARGE AREAS OF SHOWERS AND STORMS. THE
FIRST AREA BLANKETED THE NORTHEAST HALF OF IOWA...NORTHEAST OF A LINE
FROM SPENCER SOUTHEAST TO BLOOMFIELD...OR 20 MILES SOUTH OF OTTUMWA.
THE SECOND AREA WAS OVER WEST CENTRAL AND SOUTHWEST IOWA...WEST OF
A LINE FROM CARROLL...65 MILES WEST NORTHWEST OF DES MOINES SOUTH
TO CLARINDA...80 MILEfS SOUTHWEST OF DES MOINES.

THE SHOWERS AND STORMS WERE MOVING NORTH NORTHEAST AT 40 TO 45 MILES
AN HOUR.

BARLOW

IAZALL-132330-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
452 PM CST TUE MAR 13 1990

...TORNADO WATCH FOR WESTERN HALF UNTIL 6PM...SEVERE THUNDERSTORM
WATCH FOR EASTERN HALF UNTIL 8PM...
...FLASH FLOOD WATCH FOR ALL BUT FAR NORTHWEST IOWA TONIGHT...

AT 435 PM...ISOLATED INTENSE THUNDERSTORMS WERE LOCATED OVER THE
EASTERN THIRD OF IOWAS COUNTIES AS WELL AS OVER PARTS OF SOUTHWEST
IOWA. THE STRONGEST OF THESE STORMS WERE LOCATED 35 MILES NORTHEAST
OF OTTUMWA...NEAR WASHINGTON...25 MILES NORTHEAST OF CEDAR RAPIDS
...NEAR CENTRAL CITY AND 45 MILES NORTH NORTHEAST OF WATERLOO...NEAR
CRESCO. IN SOUTHWEST IOWA STORMS WERE LOCATED NEAR VILLISCA...70 MILES
SOUTHWEST OF DES MOINES AND 50 MILES WEST OF DES MOINES NEAR ADAIR.

VERY HEAVY RAIN...HAIL AND WINDS OF 35 TO 45 MILES AN HOUR ARE POSSIBLE
WITH THESE STORMS.

THESE STORMS WERE PART OF TWO LARGE AREAS...THE FIRST AREA WAS
LOCATED FROM ALGONA...35 MILES WEST OF MASON CITY SOUTHEAST TO
FAIRFIELD 25 MILES EAST OF OTTUMWA. THE SECOND AREA EXTENDED
FROM NEAR STORM LAKE...30 MILES SOUTH OF SEPNCER SOUTH TO BEDFORD
70 MILES SOUTHWEST OF DES MOINES.

THE SHOWERS AND STORMS WERE MOVING NORTH NORTHEAST AT 40 TO 45
MILES AN HOUR.

CAB/MG