Severe Thunderstorm Warning 180, NWS Des Moines, IA

IAZ011-290450-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
1120 PM CDT TUE AUG 28 1990

THUNDERSTORMS WITH INTENSE RAIN AND LIGHTNING HAVE ERUPTED IN A VERY
SHORT PERIOD OF TIME OVER EASTERN IOWA.  THE STORMS EXTENDED FROM THE
MUSCATINE AREA...50 MILES SOUTHEAST OF CEDAR RAPIDS...WEST THROUGH
PARTS OF WASHINGTON...KEOKUK AND SOUTHERN IOWA COUNTIES.

MOST INTENSE OF THESE STORMS WERE JUST NORTHWEST OF MUSCATINE AND JUST
NORTH OF KEOTA...WHICH IS 35 MILES NORTHEAST OF OTTUMWA.

THESE STORMS WILL LAY DOWN INTENSE RAIN...DANGEROUS LIGHTNING AND
MARBLE-SIZED HAIL WITH WIND GUSTS OF 40 TO 50 MILES AN HOUR.  THE
STORMS WERE MOVING EAST SOUTHEAST AT 15 MILES AN HOUR...AS MOREm
STORMS BUILT BACK WESTWARD.

MYERS

IAZALL-290530-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE DES MOINES IA
1143 PM CDT TUE AUG 28 1990

AT 1135 PM...A 30 MILE WIDE BAND OF SCATTERED SHOWERS AND INTENSE
THUNDERSTORMS HAD DEVELOPED RAPIDLY FROM 30 MILE SOUTHEAST OF
DES MOINES NEAR PELLA EAST TO ABOUT 5 MILES SOUTHWEST OF THE
QUAD CITIES.

THE STRONGEST STORMS WERE LOCATED 35 MILES SOUTHWEST OF THE QUAD CITIES
...NEAR WAPELLO AND 30 MILES NORTHEAST OF OTTUMWA...NEAR WASHINGTON.

THESE STORMS WILL PRODUCE MARBLE SIZED HAIL...VERY HEAVY RAIN AND NEARLY
CONTINUOUS DEADLY LIGHTNING.

EXACT MOVEMENT OF THE STORMS HAD NOT YET BEEN DETERMINED.

BARLOW