

765 

WWUS20 KWNS 022355

SEL5

SPC WW 022355

MNZ000-NDZ000-WIZ000-LSZ000-030600-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 455

NWS STORM PREDICTION CENTER NORMAN OK

655 PM CDT MON JUL 2 2012



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       NORTHERN MINNESOTA

       FAR EASTERN NORTH DAKOTA

       NORTHWEST WISCONSIN

       LAKE SUPERIOR



EFFECTIVE THIS MONDAY NIGHT AND TUESDAY MORNING FROM 655 PM UNTIL

100 AM CDT.



HAIL TO 3 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 85

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 25 MILES WEST OF

GRAND FORKS NORTH DAKOTA TO 25 MILES NORTH NORTHEAST OF KENNEDY

WISCONSIN.  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 454...



DISCUSSION...A LARGE CLUSTER OF THUNDERSTORMS IS INTENSIFYING OVER

NORTH CENTRAL MN...WHILE MORE ISOLATED CELLS FORM OVER NORTHEAST ND.

 THE STORMS OVER MN WILL LIKELY ACCELERATE EASTWARD TOWARD THE DLH

AREA OVER THE NEXT FEW HOURS AS ACTIVITY MOVES THROUGH AN EXTREMELY

MOIST AND UNSTABLE AIR MASS.  THE POTENTIAL EXISTS FOR A CORRIDOR OF

WIDESPREAD DAMAGING WINDS AND VERY LARGE HAIL ACROSS PORTIONS OF THE

WATCH AREA.



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

TO 3 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70

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

MOTION VECTOR 29035.





...HART

