WATCHES: Severe Thunderstorm Watch Number 533

WWUS20 KWNS 142357
SEL3
SPC WW 142357
MNZ000-WIZ000-LSZ000-150600-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 533
NWS STORM PREDICTION CENTER NORMAN OK
655 PM CDT SAT JUN 14 2008

THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

CENTRAL AND EASTERN MINNESOTA
WEST CENTRAL AND NORTHWEST WISCONSIN
LAKE SUPERIOR

EFFECTIVE THIS SATURDAY NIGHT AND SUNDAY MORNING FROM 655 PM
UNTIL 100 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 85
STATUTE MILES EAST AND WEST OF A LINE FROM 30 MILES SOUTH
SOUTHWEST OF MINNEAPOLIS MINNESOTA TO 35 MILES NORTHWEST OF ELY
MINNESOTA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU3).

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 528...WW 529...WW
530...WW 531...WW 532...

DISCUSSION...BOWING LINE OF SEVERE STORMS IS MOVING ESEWD AT 40-45
KT WITH CONTINUING THREAT OF DAMAGING WINDS AS IT MOVES INTO CENTRAL
MN. STORMS ARE ASSOCIATED WITH LEFT EXIT REGION OF STRONG MID/UPPER
LEVEL JET MAXIMUM EXTENDING INTO THE NRN PLAINS WHICH SHOULD PROVIDE
FAVORABLE DYNAMIC FORCING THROUGH THE EVENING HOURS. ALTHOUGH LOW
LEVEL MOISTURE IS MARGINAL WITH DEW POINTS IN THE 45-50F
RANGE...STEEP LAPSE RATES AND DRY SUBCLOUD LAYER WILL ENHANCE
DOWNDRAFT INTENSITY WITH COLD POOL FORCING CONTINUING TO GENERATE
NEW UPDRAFTS ON THE LEADING EDGE OF THE GUST FRONT.

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 450. MEAN STORM
MOTION VECTOR 28040.

...WEISS

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