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000 

WWUS20 KWNS 112315

SEL5

SPC WW 112315

MNZ000-WIZ000-LSZ000-120600-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 685

NWS STORM PREDICTION CENTER NORMAN OK

615 PM CDT FRI JUL 11 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       PARTS OF EASTERN MINNESOTA

       PARTS OF NORTHWESTERN WISCONSIN

       LAKE SUPERIOR



EFFECTIVE THIS FRIDAY NIGHT AND SATURDAY MORNING FROM 615 PM

UNTIL 100 AM CDT.



HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80

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



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 65

STATUTE MILES EAST AND WEST OF A LINE FROM 55 MILES NORTHEAST OF

ELY MINNESOTA TO 25 MILES SOUTHEAST OF MINNEAPOLIS MINNESOTA.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU5).



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 683...WW 684...



DISCUSSION...SEVERE THUNDERSTORMS HAVE DEVELOPED OVER CENTRAL MN

AHEAD OF THE STRONG UPPER TROUGH AND COLD FRONT.  WITH VERY UNSTABLE

AIR AVAILABLE EWD ACROSS THE WATCH AREA ALONG WITH 40 KT OF DEEP

LAYER SHEAR...POTENTIAL FOR NOT ONLY SUPERCELLS BUT BOWING LINE

SEGMENTS FOR AN ENHANCED WIND DAMAGE THREAT.  STORMS WILL CONTINUE

EWD INTO ARROWHEAD AND NWRN WI BY THIS EVENING.



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

TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM

MOTION VECTOR 24035.





...HALES

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