

669 

WWUS20 KWNS 230735

SEL2

SPC WW 230735

IAZ000-MIZ000-MNZ000-WIZ000-LSZ000-231500-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 392

NWS STORM PREDICTION CENTER NORMAN OK

235 AM CDT WED JUN 23 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       FAR NORTHEAST IOWA

       A SMALL PART OF UPPER MICHIGAN

       MUCH OF SOUTHERN AND EASTERN MINNESOTA

       MUCH OF WESTERN AND NORTHERN WISCONSIN

       LAKE SUPERIOR



EFFECTIVE THIS WEDNESDAY MORNING FROM 235 AM UNTIL 1000 AM CDT.



HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70

MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 140

STATUTE MILES EAST AND WEST OF A LINE FROM 70 MILES NORTH

NORTHWEST OF RHINELANDER WISCONSIN TO 50 MILES SOUTHWEST OF

ROCHESTER MINNESOTA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE

THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).



REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE

FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY

DO PRODUCE TORNADOES.



OTHER WATCH INFORMATION...CONTINUE...WW 387...WW 388...WW

389...WW 390...WW 391...



DISCUSSION...SLIGHTLY ELEVATED TSTMS EXPECTED TO INCREASE IN

COVERAGE/INTENSITY THROUGH LATER THIS MORNING AS WAA/ASCENT INCREASE

DOWNSTREAM FROM NEB/SD SHORTWAVE TROUGH.  MODERATE CLOUD LAYER

SHEAR...HIGH PW...AND LIKELIHOOD FOR COMPLEX STORM MODES/STORM

INTERACTIONS SUGGEST MAIN SVR THREATS WILL BE HAIL AND LOCALLY DMGG

WIND.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM

MOTION VECTOR 25030.





...CORFIDI

