Severe Thunderstorm Warning 116, NWS Des Moines, IA

IAZALL-071440-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE DES MOINES IA
846 AM CDT SUN JUL 7 1991

...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR PART OF NORTHWEST
IOWA UNTIL 1PM...

AT 835 AM...SCATTERED THUNDERSTORMS WERE MOVING INTO THE EXTREME
NORTHWEST CORNER OF IOWA. THESE THUNDERSTORMS WERE SOME 40 TO 60
MILES NORTH OF SIOUX CITY...NEAR ROCK RAPIDS...ROCK VALLEY AND HULL.

IT APPEARS THAT MUCH STRONGER THUNDERSTORMS WILL BE ENTERING EXTREME
NORTHWEST IOWA FROM SOUTHEAST SOUTH DAKOTA BY ABOUT 930 AM.

THE PRECIPITATION OVER NORTHWEST IOWA WAS MOVING EAST SOUTHEAST AT 35
MILES AN HOUR.

THERE WERE ISOLATED SHOWERS AND THUNDERSTORMS OVER SOUTH CENTRAL IOWAQ.
THESE SHOWERS AND STORMS WERE LOCATED SOME 35 TO 55 MILES SOUTH OF
DES MOINES...NEAR OSCEOLA...LAMONI...LEAON AND ALLERTON. THESE SHOWERS
AND STORMS WERE MOVING EAST AT 30 MILES AN HOUR.

BARLOW

IAZALL-071440-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY...CORRECTED LAST PARA.
NATIONAL WEATHER SERVICE DES MOINES IA
846 AM CDT SUN JUL 7 1991

...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR PART OF NORTHWEST
IOWA UNTIL 1PM...

AT 835 AM...SCATTERED THUNDERSTORMS WERE MOVING INTO THE EXTREME
NORTHWEST CORNER OF IOWA. THESE THUNDERSTORMS WERE SOME 40 TO 60
MILES NORTH OF SIOUX CITY...NEAR ROCK RAPIDS...ROCK VALLEY AND HULL.

IT APPEARS THAT MUCH STRONGER THUNDERSTORMS WILL BE ENTERING EXTREME
NORTHWEST IOWA FROM SOUTHEAST SOUTH DAKOTA BY ABOUT 930 AM.

THE PRECIPITATION OVER NORTHWEST IOWA WAS MOVING EAST SOUTHEAST AT 35
MILES AN HOUR.

THERE WERE ISOLATED SHOWERS AND THUNDERSTO]RMS OVER SOUTH CENTRAL IOWA.
THESE SHOWERS AND STORMS WERE LOCATED SOME 35 TO 55 MILES SOUTH OF
DES MOINES...NEAR OSCEOLA...LAMONI...LEON AND ALLERTON. THESE SHOWERS
AND STORMS WERE MOVING EAST AT 30 MILES AN HOUR.

BARLOW

IAZALL-071515-

SPECIAL WEATHER STATEMENT AND WEATHER UPDATE FOR IOWA
NATIONAL WEATHER SERVICE DES MOINES IA
915 AM CDT SUN JUL 7 1991

AT 910 AM...A LINE OF INTENSE THUNDERSTORMS WAS MOVING INTO THE EXTREME
NORTHWEST CORNER OF IOWA. THIS LINE WAS LOCATED SOME 20 TO 60 MILES
NORTH OF SIOUX CITY...NEAR AKRON...HAWARDEN...ROCK VALLEY AND LESTER.

THESE STORMS ARE CAPABLE OF PRODUCING EXTREMELY HEAVY RAIN...LARGE
HAIL...DAMAGING THUNDERSTORM WINDS IN EXCESS OF 50 TO 60 MILES AN
HOUR ALONG WITH FREQUENT DEADLY LIGHTNING.

THIS LINE OF STORMS WAS MOVING EAST SOUTHEAST AT 50 TO 55 MILES AN HOUR.

ISOLATED SHOWERS AND THUNDERSTORMS WERE LOCATED OVER THE SOUTHERN TIER
OF IOWAS COUNTIES FROM 70 MILES SOUTHWEST OF DES MOINES...NEAR BEDFORD
EAST TO NEAR BLOOMFIELD OR 20 MILES SOUTH OF OTTUMWA.

THESE SHOWERS AND STORMS WERE MOVING EAST AT 30 MILES AN HOUR.

THE OUTLOOK THROUGH 10 AM...SHOWERS AND THUNDERSTORMS WILL CONTINUE TO
SPREAD OVER FAR NORTHWEST IOWA...WITH ISOLATED SHOWERS AND STORMS OVER
THE SOUTHERN TIER OF IOWAS COUNTIES.

BARLOW

IAZALL-071540-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE DES MOINES IA
950 AM CDT SUN JUL 7 1991

...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR PART OF NORTHWEST
IOWA UNTIL 1PM...

AT 935 AM...A LINE OF INTENSE THUNDERSTORMS WAS LOCATED OVER FAR
NORTHWEST IOWA. THIS LINE OF STORMS EXTENDED FROM 25 MILES NORTH OF
SIOUX CITY...NEAR LE MARS TO 60 MILES NORTH OF SIOUX CITY...NEAR
ROCK RAPIDS.

THESE STORMS WILL PRODUCE BRIEF EXTREMELY HEAVY RAIN...LARGE HAIL...
WINDS IN EXCESS OF 70 MILES AN HOUR AND FREQUENT DEADLY LIGHTNING.

THESE STORMS WERE PART OF A LARGER AREA OF SHOWERS AND STORMS. THE
LEADING EDGE OF THIS COMPLEX EXTENDED FROM 20 MILES NORTHWEST OF
SPENCER SOUTHEAST TO STORM LAKE OR ABOUT 50 MILES NORTHEAST OF
SIOUX CITY.

THESE SHOWERS AND STORMS WERE MOVING EAST SOUTHEAST AT 45 TO 50 MILES
AN HOUR.

ISOLATED SHOWERS AND STORMS PERSISTED OVER THE SOUTHERN TIER OF IOWAS
COUNTIES FROM MOUNT AYR...55 MILES SOUTHWEST OF DES MOINES EAST TO
MOULTON OR 30 MILES SOUTHWEST OF OTTUMWA.

THESE SHOWERS AND STORMS WERE MOVING EAST AT 30 MILES AN HOUR.

BARLOW

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