Severe Thunderstorm Warning 185, NWS Des Moines, IA

IAZALL-072050-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE DES MOINES IA
245 PM CDT FRI SEP 7 1990

...TORNADO WATCH IN EFFECT FOR NORTHWEST AND NORTH CENTRAL IOWA UNTIL
8 PM CDT THIS FRIDAY EVENING...

AT 235 PM...WIDELY SCATTERED LIGHT SHOWERS WERE OCCURRING OVER SOUTHWEST
AND SOUTH CENTRAL IOWA.  MOST OF THE SHOWERS EXTENDED FROM THE CORNING
AREA...45 MILES SOUTHWEST OF DES MOINES...TO THE MELCHER AREA...30 MILES
SOUTHEAST OF DES MOINES.  THERE WERE ALSO SOME LIGHT SHOWERS FROM
GUTHRIE CENTER TO NEAR PERRY...30 TO 40 MILES NORTHWEST OF DES MOINES.

THE SHOWERS WERE MOVING SOUTHEAST AT 25 MILES AN HOUR.

ALTHOUGH NO TORNADOES OR SEVERE WEATHER HAD BEEN OBSERVED IN OR NEAR
THE WATCH AREA...PERSONS IN THESE AREAS SHOULD BE ALERT TO CHANGING
WEATHER CONDITIONS AND PREPARE TO TAKE NECCESSAR PRECAUTIONS.
/
DM

IAZ010-072030-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
300 PM CDT FRI SEP 7 1990

...THUNDERSTORMS APPROACHING NORTHWEST IOWA...

AT 255 PM...THUNDERSTORMS WERE APPROACHING NORTHWEST IOWA FROM
SOUTHWEST MINNESOTA.  THE STORMS WERE IN A NARROW AREA FROM 20 MILES
NORTHWEST OF SPIRIT LAKE TO ABOUT 30 MILES NORTHEAST OF ESTHERVILLE.

THE STORMS WERE DROPPING SOUTHEAST AT 20 TO 30 MILES AN HOUR...AND
SHOULD BE ENTERING DICKINSON AND EMMET COUNTIES BETWEEN 215 AND 230
PM THIS AFTERNOON.

AS OF 255 PM...WEATHER RADARS DID NOT INDICATE ANY SEVERE WEATHER WITH
THESE STORMS...AND ONLY SMALL HAIL HAS BEEN REPORTED.  HOWEVER...
CONDITIONS ARE FAVORABLE FOR FURTHER INTENSIFICATION OF THESE STORMS...
AND RESIDENTS OF NORTHWEST IOWA SHOULD REMAIN ALERT.

REMEMBER...A TORNADO WATCH IS IN EFFECT FOR NORTHWEST AND NORTH
CENTRAL IOWA UNTIL 8 PM.

TRUETT

IAZ010-072030-

SPECIAL WEATHER STATEMENT...CORRECTION TO TIMES IN 2ND PARAGRAPH..
NATIONAL WEATHER SERVICE DES MOINES IA
300 PM CDT FRI SEP 7 1990

...THUNDERSTORMS APPROACHING NORTHWEST IOWA...

AT 255 PM...THUNDERSTORMS WERE APPROACHING NORTHWEST IOWA FROM
SOUTHWEST MINNESOTA.  THE STORMS WERE IN A NARROW AREA FROM 20 MILES
NORTHWEST OF SPIRIT LAKE TO ABOUT 30 MILES NORTHEAST OF ESTHERVILLE.

THE STORMS WERE DROPPING SOUTHEAST AT 20 TO 30 MILES AN HOUR...AND
SHOULD BE ENTERING DICKINSON AND EMMET COUNTIES BETWEEN 315 AND 330
PM THIS AFTERNOON.

AS OF 255 PM...WEATHER RADARS DID NOT INDICATE ANY SEVERE WEATHER WITH
THESE STORMS...AND ONLY SMALL HAIL HAS BEEN REPORTED.  HOWEVER...
CONDITIONS ARE FAVORABLE FOR FURTHER INTENSIFICATION OF THESE STORMS...
AND RESIDENTS OF NORTHWEST IOWA SHOULD REMAIN ALERT.

REMEMBER...A TORNADO WATCH IS IN EFFECT FOR NORTHWEST AND NORTH
CENTRAL IOWA UNTIL 8 PM.

TRUETT

IAZ002-003-007-072100-

SPECIAL WEATHER STATEMENT AND WEATHER UPDATE FOR NORTHEAST IOWA
NATIONAL WEATHER SERVICE WATERLOO IA
305 PM CDT FRI SEP 7 1990

...TORNADO WATCH FOR NORTH CENTRAL IOWA UNTIL 800 PM CDT...

A 305 PM CDT SCATTERED SHOWERS HAD DEVELOPED OVER PARTS OF NORTHEAST
IOWA...MAINLY NORTH OF DECORAH AND ALONG THE IOWA/MINNESOTA BORDER
NORTH OF MASON CITY.  THE SHOWERS WERE MOVING SOUTHEAST AT 25 MILES
AN HOUR.  THE REST OF NORTHEAST IOWA HAD MOSTLY SUNNY SKIES.  THE
TEMPERATURES WERE IN THE UPPER 70S TO LOWER 80S.  THE WINDS WERE EAST
TO SOUTHEAST AT 5 TO 15 MILES AN HOUR.

AT 400 PM CDT THE SKY OVER NORTHEAST IOWA SHOULD BE PARTLY CLOUDY WITH
SHOWERS AND THUNDERSTORMS POSSIBLE ABOUT ANYWHERE. TEMPERATURES SHOULD
REMAIN STEADY WITH VARIABLE WINDS 5 TO 15 MILES AN HOUR.  NO SEVERE
WEATHER HAS BEEN REPORTED IN THE TORNADO WATCH AREA. PEOPLE IN AND NEAR
THE WATCH AREA SHOULD REMAIN ALERT FOR RAPID CHANGES IN THE WEATHER
CONDITIONS. BE PREPARED TO TAKE PROTECTIVE ACTION IF SEVERE WEATHER
STARTS TO OCCUR.

IAZALL-072120-

SPECIAL WEATHER STATEMENT AND WEATHER UPDATE FOR IOWA
NATIONAL WEATHER SERVICE DES MOINES IA
315 PM CDT FRI SEP 7 1990

...TORNADO WATCH IN EFFECT FOR NORTHWEST AND NORTH CENTRAL IOWA UNTIL
8 PM CDT THIS FRIDAY EVENING...

AT 310 PM...WIDELY SCATTERED LIGHT SHOWERS WERE OCCURRING OVER SOUTHWEST
AND SOUTH CENTRAL IOWA.  MOST OF THE SHOWERS WERE ALONG AND SOUTH OF A
COUNCIL BLUFFS TO DES MOINES LINE.  MOST OF THE SHOWERS STRETCHED FROM
REDFIELD...25 MILES WEST OF DES MOINES...TO THE ATLANTIC AREA...65 MILES
SOUTHWEST OF DES MOINES...AND NEAR AFTON...40 MILES SOUTHWEST OF DES
MOINES.  THESE SHOWERS WERE MOVING SOUTHEAST AT 25 MILES AN HOUR.

ALSO...INTENSE THUNDERSTORMS WERE APPROACHING THE IOWA BORDER NORTH OF
THE IOWA GREAT LAKES...80 MILES NORTHEAST OF SIOUX CITY.  THESE STORMS
WERE MOVING SOUTHEAST AT 25 MILES AN HOUR.

THE ONE TO TWO HOUR OUTLOOK IS FOR THE STORMS APPROACHING THE NORTHWEST
IOWA BORDER TO MOVE INTO THE IOWA GREAT LAKES AREA AND ADJACENT AREAS
OF NORTH CENTRAL IOWA.  ALSO...THE SHOWERS OVER SOUTHERN IOWA WILL
CONTINUE TO BUILD...PRODUCING OCCASIONAL THUNDERSHOWERS.

DM

IAZALL-072130-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE DES MOINES IA
342 PM CDT FRI SEP 7 1990

...TORNADO WATCH IN EFFECT FOR NORTHWEST AND NORTH CENTRAL IOWA UNTIL
8 PM CDT THIS FRIDAY EVENING...

AT 335 PM...SCATTERED SHOWERS AND ISOLATED STRONG THUNDERSTORMS WERE
MOVING INTO THE NORTHERN TIER OF IOWAS COUNTIES. THE STRONGEST STORMS
WERE STILL LOCATED IN SOUTHERN MINNESOTA...HOWEVER STRONG STORMS WERE
APPROACHING THE SPIRIT LAKE AREA SOME 25 MILES NORTH OF SPENCER. PEOPLE
ON SPIRIT LAKE SHOULD BE PREPARED TO MOVE TO A PLACE OF SAFE HARBOR AS
THESE STORMS APPROACH. THE SHOWERS AND STORMS OVER NORTHERN IOWA WERE
LOCATED NORTH OF A LINE FROM SPIRIT LAKE EAST TO DECORAH.

SCATTERED LIGHT SHOWERS WERE OCCURRING FROM SOUTHWEST INTO CENTRAL IOWA.
THESE SHOWERS WERE ALONG AND 20 MILES EITHER SIDE OF A LINE FROM 10
SOUTHEAST OF OMAHA/CONCIL BLUFFS EAST TO WINTERSET OR 20 MILES SOUTHWEST
OF DES MOINES.

THE S4HOWERS AND STORMS WERE MOVING SOUTH SOUTHEAST AT 25 MILES AN HOUR.

BARLOW/MILLER