SEVERE THUNDERSTORM WATCH FOR PORTIONS OF NORTHERN MINNESOTA FAR EASTERN NORTH DAKOTA NORTHWEST WISCONSIN LAKE SUPERIOR

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.