Severe Thunderstorm Warning 174, NWS Des Moines, IA

IAZALL-261030-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE DES MOINES IA
445 AM CDT SUN AUG 26 1990

AN ISOLATED STRONG THUNDERSTORM WAS OVER NORTHWEST IOWA.  AT 428 AM...
THE THUNDERSTORM WAS 45 MILES SOUTHWEST OF FORT DODGE...OR JUST SOUTH-
WEST OF LAKE VIEW.  THIS STORM IS LIKELY PRODUCING EXTREMELY HEAVY
RAINS...PEA TO MARBLE SIZE HAIL AND WIND GUSTS OF 30 TO 40 MILES AN
HOUR.  THE STORM WAS MOVING NORTHEAST AT 20 MILES AN HOUR.   THE STORM
WILL BE MOVING THROUGH THE LAKE VIEW AREA TO AROUND ROCKWELL CITY BY
530 AM.

THIS STORM WAS PART OF A CLUSTER OF THUNDERSTORMS THAT WAS LOCATED
BETWEEN IDA GROVE AND JEFFERSON.  OTHER ISOLATED SHOWERS AND THUNDER-
STORMS WERE OVER WEST CENTRAL IOWA NEAR DENISON AND IN THE NORTHWEST
JUST SOUTHEAST OF SIOUX FALLS SOUTH DAKOTA.  THESE SHOWERS AND STORMS
WERE ALSO MOVING NORTHEAST AT 20 MILES AN HOUR.

THUNDERSTORMS WERE ALSO OCCURRING OVER SOUTHERN MINNISOTA...JUST NORTH
THE BORDER...NORTH OF MASON CITY.

DLF

IAZALL-261130-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE DES MOINES IA
545 AM CDT SUN AUG 26 1990

A CLUSTER OF STRONG THUNDERSTORMS WAS OVER NORTH CENTRAL AND NORTHWEST
IOWA.  AT 530 AM...THE THUNDERSTORMS WERE LOCATED FROM 10 MILES SOUTH OF
FORT DODGE TO ROCKWELL CITY...25 MILES SOUTHWEST OF FORT DODGE.  THE
CALHOUN COUNTY SHERIFFS OFFICE REPORTED THAT BRIEF HEAVY RAINS AND
WINDS UP TO 40 MILES AN HOUR OCCURRED WITH THE STORMS AS THE PASSED
OVER ROCKWELL CITY.

THE STORMS WERE MOVING NORTHEAST AT 20 MILES AN HOUR.   THE STORMS WILL
BE PASSING THROUGH MANSON AND FORT DODGE TO JUST SOUTH OF HUMBOLT AND
EAGLE GROVE BY 630 AM.  IN ADDITION TO THE HEAVY RAINS AND GUSTY WINDS
...SOME SMALL HAIL IS POSSIBLE FROM THESE STORMS.

ISOLATED THUNDERSTORMS WERE ALSO OVER SOUTHWEST IOWA...EAST OF COUNCIL
BLUFFS NEAR AVOCA AND IN NORTHWEST IOWA...SOUTHEAST OF SIOUX FALLS
SOUTH DAKOTA...NEAR SIBLEY.  THESE STORMS WERE AL+SO MOVING NORTHEAST
AT 20 MILES AN HOUR.

DLF

IAZALL-262300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
600 AM CDT SUN AUG 26 1990

...HOT TEMPERATURES AND UNPLEASANT HUMIDITY WILL OCCUR ACROSS IOWA...

TYPICAL AUGUST WEATHER IS EXPECTED OVER THE STATE FROM MIDDAY INTO THE
EVENING HOURS AS TEMPERATURES CLIMB INTO THE UPPER 80S TO MIDDLE 90S.
THE COMBINATION OF HEAT AND HUMIDITY WILL PRODUCE HEAT INDICES IN THE
UPPER 90S IN EXTREME NORTHEAST IOWA TO AROUND 107 DEGREES IN THE
SOUTHWEST QUARTER.

PEOPLE WORKING OUT-OF-DOORS...THOSE LIVING IN UN-AIRCONDITIONED SPACES
...THE ELDERLY...AND PEOPLE IN POOR HEALTH SHOULD TAKE PRECAUTIONS.
PROLONGED EXPOSURE TO THESE CONDITIONS OR STRENUOUS PHYSICAL ACTIVITY
CAN LEAD TO HEAT EXHAUSTION OR POSSIBLE HEAT STROKE.

PEOPLE ATTENDING OUTDOOR EVENTS SUCH AS THE IOWA STATE FAIR SHOULD
WEAR LIGHT-COLORED...LOOSE-FITTING CLOTHING...HAVE PROTECTION FROM THE
SUN AND DRINK PLENTY OF NON-ALCOHOLIC LIQUIDS.

SLIGHTLY HIGHER HEA;T INDICES ARE EXPECTED MONDAY.

MYERS

IAZALL-261230-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE DES MOINES IA
645 AM CDT SUN AUG 26 1990

AN ISOLATED INTENSE THUNDERSTOM WAS OVER NORTH CENTRAL IOWA.  AT 535 AM
...THE STORM WAS LOCATED NORTH OF FORT DODGE...JUST SOUTH OF HUMBOLT.
HAIL...WINDS UPTO 40 MILES AN HOUR AND EXTREMELY HEAVY RAINS WILL
OCCUR WITH THIS STORM AS IT MOVES NORTHEAST AT 30 MILES AN HOUR.  BY
730 AM THE STORM WILL BE LOCATED SOUTH OF MASON CITY NEAR BELMOND.

OTHER ISOLATED THUNDERSTORMS WITH VERY HEAVY RAINS WERE LOCATED IN
NORTH CENTRAL IOWA...SOUTHWEST OF MASON CITY NEAR BRITT AND JUST SOUTH-
WEST OF FORT DODGE.   IN WEST CENTRAL IOWA...AN ISOLATED THUNDERSTORM
WITH VERY HEAVY RAIdNS WAS LOCATED 70 MILES WEST OF DES MOINES NEAR
AUDUBON.

THESE STORMS WERE ALSO MOVING NORTHEAST AT 30 MILES AN HOUR.

DLF