Flash Flood Warning 11, NWS Twin Cities, MN

MNZALL-220100-
SPECIAL WEATHER STATEMENT...CORRECTED FOR CODING...
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
650 PM CDT SUN JUL 21 1991

...FLASH FLOOD WATCH FOR MUCH OF SOUTHERN MINNESOTA FOR TONIGHT...INCLUDING
THE TWIN CITIES METRO AREA...
...A LINE OF THUNDERSTORMS 40 MILES SOUTH OF THE TWIN CITIES WAS BEGINING TO
MOVE NORTHWARD AT 10 MPH AND AT THIS RATE WILL BE IN THE SOUTHERN TWIN CITIES
METRO AREA BETWEEN 730 AND 800 PM...

AT 640 PM...POWERFUL THUNDERSTORMS CONTINUE DEVELOP OVER SOUTH CENTRAL AND
SOUTHEAST MINNESOTA...SOUTH OF THE TWIN CITIES...AND MORE POWERFUL STORMS WERE
MOVING INTO WESTERN MINNESOTA FROM THE DAKOTAS. SOME OF THESE STORMS WERE
PRODUCING INTENSE FLOODING TYPE RAINFALLS...STRONG GUSTY WINDS OF 50 TO 60 MPH
AND POSSIBLY SOME HAIL. THE MOST INTENSE RAINFALL WAS IN SOUTHEAST MINNESOTA
NEAR THE MISSISSIPPI RIVER IN WINONA COUNTY BETWEEN ROCHESTER AND WINONA...NEAR
FEEMONT AND UTICA.

ANOTHER AREA OF STRONG THUNDERSTORMS WAS OVER SOUTH CENTRAL MINNESOTA...SOUTH
OF NEW ULM. AND FROM MANKATO AND EAST TO WASECA AND OWATONNA

THIS IS A DANGEROUS WEATHER SITUATION...BECAUSE THE POTENTIAL FOR FLOODING
AND SEVERE WEATHER IS VERY HIGH OVER SOUTHERN MINNE:SOTA...THIS EVENING.
BE PREPARED FOR THE WORST AND...BE PREPARED TO MOVE TP A PLACE OF SAFETY IF
SEVERE WEATHER APPROACHES OR IF FLOODING IS OCCURRING.

MNZALL-220230-
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
745 PM CDT SUN JUL 21 1991

...STRONG THUNDERSTORMS MOVING INTO THE SOUTHERN PORTIONS OF THE
TWIN CITIES METROPOLITIAN AREA...
...SEVERE THUNDERSTORM WATCH POSTED FOR SOUTHERN MINNESOTA UNTIL
MIDNIGHT...INCLUDNG THE TWIN CITIES...
...TORNADO WATCH CONTINUES FOR SOUTHWEST AND WEST CENTRAL MINNESOTA
TILL 11 PM CDT...

POWERFUL THUNDERSTORMS CONTINUE DEVELOP AND MOVE NORTHWARD FROM ACROSS
SOUTHERN MINNESOTA. THE LEADING EDGE OF THIS AREA WAS CROSSING INTO
THE SOUTHERN COUNTIES OF THE TWIN CITIES METROPOLITIAN AREA. THESE
STORMS HAVE THE POTIENTAL TO TORRENTIAL RAINS...LARGE HAIL...STONG
WINDS AND DANGEROUS LIGHTNING. THE STRONGEST OF THESE STORMS EXTENDED
FROM CENTRAL SIBLEY COUNTY EAST INTO WESTERN SCOTT COUNTY. THESE
STORMS WILL MOVE NORTHWARD INTO THE HEART OF THE METROPOLITIAN AREA
DURNG THE NEXT SEVERAL HOURS.

PERSONS OUT AND ABOUT SHOULD KEEP A WATCHFUL EYE ON THE SKY AND LISTEN
FOR FURTHER STATEMENTS OR WARNING CONCERNING THESE POTIENTALLY DANGEROUS
STORMS.

IN ADDITION A FLASH FLOOD WATCH ALSO REMAIN IN EFFECT FOR MUCH OF
SOUTHERN TONIGHT. BECAUSE THE POTENTIAL FOR FLOODING AND SEVERE WEATHER
IS VERY HIGH PERSONS IN THE WATCH AREA MUST BE PREPARED FOR THE WORST
AND...BE PREPARED TO MOVE TO A PLACE OF SAFETY IF SEVERE WEATHER
APPROACHES OR IF FLOODING IS OCCURRING.

OTHER SEVERE THUNDERSTORMS WERE DROPING SOUTHEAST ALONG THE MINNESOTA
RIVER WHERE WARNING HAVEBEEN POSTED FOR THE THREAT OF LARGE HAIL AND
STRONG WINDS. TO THE SOUTHEAST ALONG THE MISSISSIPPI RIVER FROM RED WING
TO NORTH OF CALADONIA POWERFUL THUNDERSTORMS ARE ALSO PRODUCING GOLFBALL
DIAMETER HAIL AND RAgIN IN THE 1-2 INCH RANGE.

ACROSS SOUTHERN MINNESOTA THESE THUNDERSTORMS WERE MOVING NORTH AT 10 TO
15 MPH WHILE THE STRONG ACTIVITY IN WEST CENTRAL MINNESOTA WAS DROPPING
SOUTHEAST AT 15 TO 20 MPH.
DOMBROWSKY

MNZ016-220400-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
854 PM CDT SUN JUL 21 1991

...SEVERE THUNDERSTORM WARNING FOR SOUTHERN HENNEPIN COUNTY IS CANCELLED
AS OF 850 PM CDT THIS EVENING...

THUNDERSTORM ACTIVITY HAS MOVED NORTHWARD OUT OF SOUTHERN HENNIPEN AND
NO LONGER CONSTITUTES A SEVERE WEATHER THREAT TO THE SOUTH METRO.

MNZALL-220400-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
1055 PM CDT SUN JUL 21 1991

...SEVERE THUNDERSTORM WATCH POSTED FOR SOUTHERN MINNESOTA UNTIL MIDNIGHT...
INCLUDNG THE TWIN CITIES...
...SEVERE THUNDERSTORM WATCH FOR WESTERN MINNESOTA UNTIL 5 AM...TWIN CITY METRO
NOT INCLUDED...
AT 1045 PM..THUNDERSTORMS WITH VERY HEAVY TO INTENSE RAINSHOWERS WERE SCATTERED
ACROSS PARTS OF SOUTHEAST AND CENTRAL MINNESOTA...TO THE SOUTH AND WEST OF THE
TWIN CITIES.

THE THUNDERSTORMS WITH THE HEAVIEST SHOWERS WERE LOCATED BETWEEN REDWOOD FALLS
AND OLIVIA IN CENTRAL MINNESOTA AND BETWEEN ROCHESTER AND WINONA THE SOUTHEAST.

THESE THUNDERSTORMS WERE PART OF A LARGE AREA OF STEADY RAIN OBSERVED OVER THE
SOUTH HALF OF MINNESOTA. THE RAIN AREA WAS 210 MILES WIDE AND IT WAS RAINING
SOUTH OF A LINE FROM DULUTH TO BRAINERD AND ALEXANDRIA OUT ORTONVILLE IN FAR
WESTERN MINNESOTA. THE RAIN OVER WESTERN MINNESOTA WAS MOVING TO THE SOUTHEAST
AT 20 MPH.

RAIN HAS SPREAD OUT OF SOUTHEAST MINNESOTA ACROSS MOST OF WEST AND WEST CENTRAL
WISCONSIN ALSO. THE RAIN OVER WESTERN WISCONSIN AND SOUTHEAST MINNESOTA WAS
MOVING TO THE NORTHEAST AT 20 MPH.

MNZALL-220530-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
1150 PM CDT SUN JUL 21 1991

...SEVERE THUNDERSTORM WATCH FOR MUCH OF WESTERN MINNESOTA UNTIL 5 AM...

...SEVERE THUNDERSTORM WATCH FOR SOUTH CENTRAL AND SOUTHEAST MINNESOTA UNTIL
5 AM..

AT 1140 PM THUNDERSTORMS WITH VERY HEAVY RAINFALL WERE SCATTERED ACROSS
SOUTH CENTRAL AND SOUTHEAST MINNESOTA. MORE STRONG THUNDERSTORMS WERE
ENTERING WESTERN MINNESOTA. THE STRONGEST THUNDERSTORMS WITH VERY HEAVY
RAIN WERE LOCATED NEAR MANKATO AND NEAR ROCHESTER AND WERE MOVING NORTHEAST
AT 25 MILES AN HOUR. THIS MEANS THE STORMS WILL BE MOVING OVER ALREADY
SATURATED GROUND AND COULD CAUSE MORE FLOODING OVER SOUTHEAST MINNESOTA.

THIS ACTIVITY WAS PART OF A MUCH LARGER AREA OF SHOWERS AND THUNDERSTORMS
THAT COVERED MUCH OF CENTRAL AND SOUTHERN MINNESOTA AND EXTENDED INTO
WESTERN WISCONSIN. THE THREAT FOR HEAVY RAINFALL AND SEVERE WEATHER WILL
CONTINUE INTO THE EARLY MORNING HOURS.

PERSONS IN FLOOD PRONE AREAS SHOULD STAY ABREAST OF THE LATEST STATEMENTS
AND BE PREPARED TO MOVE TO HIGHER GROUND IF A FLASH FLOOD WARNING IS
ISSUED OR FLOODING IS OBSERVED.

PHILLIPS

MNZ014-013-220545-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST CLOUD MINNESOTA
1148 PM CDT SUN JUL 21 1991

AT 1145 PM THUNDERSTORMS CONTINUE TO BE WIDESPREAD ACROSS MUCH OF
MINNESOTA AND THE EASTERN THIRD OF THE DAKOTAS. STRONGER STORMS
WERE DEVELOPING BETWEEN FARGO AND WATERTOWN AND WILL MOVE INTO
WEST CENTRAL MINNESOTA BETWEEN MIDNIGHT AND 2 AM CDT MONDAY.

NO SEVERE WEATHER HAS BEEN REPORTED IN WEST CENTRAL MINNESOTA
SINCE 11 PM HOWEVER CONDITIONS REMAIN FAVORABLE FOR SEVERE WEATHER
TO REOCCUR.

IN THE ST CLOUD AREA SHOWERS AND THUNDERSTORMS BEGAN AROUND 10 PM
AND WILL CONTINUE UNTIL AROUND 1 AM. THESE STORMS HAVE NOT
APPROACHED THE SEVERE STAGE. ADDITIONAL THUNDERSTORMS CAN BE
EXPECTED TO MOVE INTO THE ST CLOUD AREA LATER TONIGHT.

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