

207 

WWUS20 KWNS 131927

SEL0

SPC WW 131927

WIZ000-LMZ000-140200-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 610

NWS STORM PREDICTION CENTER NORMAN OK

225 PM CDT FRI AUG 13 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       SOUTHERN WISCONSIN WISCONSIN

       LAKE MICHIGAN



EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 225 PM UNTIL 900

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 25 STATUTE

MILES EITHER SIDE OF A LINE FROM 25 MILES SOUTH OF LONEROCK

WISCONSIN TO 5 MILES EAST OF MILWAUKEE WISCONSIN.  FOR A COMPLETE

DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE

(WOUS64 KWNS WOU0).



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 609...



DISCUSSION...AS THE NORTHERN FLANK OF AN EVOLVING SQUALL LINE

INTERACTS WITH A STALLING/STALLED OUTFLOW BOUNDARY ACROSS SOUTHERN

WISCONSIN... ENHANCED CONVERGENCE...LOW-LEVEL SHEAR AND HIGH

BOUNDARY LAYER HUMIDITIES MAY SUPPORT THE RISK FOR ISOLATED

TORNADOES.  OTHERWISE ...LOCALLY DAMAGING WIND GUSTS ARE POSSIBLE AS

CONVECTION OVERSPREADS THE REGION LATE THIS AFTERNOON.



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 26030.





...KERR

