

627 

WWUS20 KWNS 141645

SEL3

SPC WW 141645

IAZ000-MIZ000-MNZ000-WIZ000-LMZ000-150000-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 473

NWS STORM PREDICTION CENTER NORMAN OK

1145 AM CDT WED JUL 14 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       FAR NORTHEAST IOWA

       WESTERN MICHIGAN UPPER PENINSULA

       FAR SOUTHEAST MINNESOTA

       SOUTHWEST...CENTRAL AND NORTHEAST WISCONSIN

       LAKE MICHIGAN



EFFECTIVE THIS WEDNESDAY MORNING AND EVENING FROM 1145 AM UNTIL

700 PM CDT.



TORNADOES...HAIL TO 2.5 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 75 STATUTE

MILES EAST AND WEST OF A LINE FROM 65 MILES SOUTH SOUTHWEST OF LA

CROSSE WISCONSIN TO 25 MILES EAST NORTHEAST OF MARQUETTE

MICHIGAN.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU3).



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 472...



DISCUSSION...BOW ECHO OVER N-CNTRL WI IS EXPECTED TO CONTINUE EWD

TODAY WITH MORE DISCRETE...SUPERCELLULAR MODES ANTICIPATED ALONG THE

SRN/SWRN FLANK OF MATURE MCS.  WHILE DAMAGING WINDS WILL REMAIN THE

PRIMARY HAZARD WITH THE BOWING SYSTEM...A MORE SUBSTANTIAL LARGE

HAIL AND TORNADO THREAT IS EXPECTED TO DEVELOP THIS AFTERNOON ACROSS

SRN PORTION OF WW AREA WHERE MODERATE/STRONG INSTABILITY WILL

COINCIDE WITH STRONG LOW AND DEEP-LAYER SHEAR.



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

SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE

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

550. MEAN STORM MOTION VECTOR 27035.





...MEAD

