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URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 322

NWS STORM PREDICTION CENTER NORMAN OK

1210 PM CDT SUN MAY 22 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       NORTHEAST IOWA

       SOUTHEAST MINNESOTA

       WESTERN WISCONSIN



EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 1210 PM UNTIL

800 PM CDT.



TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 80 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 55 MILES NORTHWEST OF

MANKATO MINNESOTA TO 45 MILES EAST OF LA CROSSE WISCONSIN.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU2).



REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR

TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH

AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR

THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS

AND POSSIBLE WARNINGS.



OTHER WATCH INFORMATION...CONTINUE...WW 321...



DISCUSSION...SRN FRINGE OF ELEVATED TSTMS ONGOING ACROSS SERN MN/WRN

WI MAY BECOME PROGRESSIVELY SURFACE BASED THIS AFTERNOON OWING TO

THE RAPID NWD FLUX OF 60+ F DEWPOINTS ALONG AND S OF WARM FRONT.

ADDITIONAL STORM DEVELOPMENT WILL BE POSSIBLE ALONG WARM AND COLD

FRONTS ASSOCIATED WITH SURFACE LOW MOVING FROM E-CNTRL SD TOWARD

CNTRL MN.  ENHANCED LOW-LEVEL SHEAR AHEAD OF SURFACE LOW COUPLED

WITH THE MOISTENING/DESTABILIZING AIR MASS WILL SUPPORT SUPERCELLS

CAPABLE OF LARGE HAIL AND TORNADOES.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

500. MEAN STORM MOTION VECTOR 23030.





...MEAD

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