WATCHES: Severe Thunderstorm Watch Number 630

WWUS20 KWNS 112102
SEL0
SPC WW 112102
MEZ000-120400-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 630
NWS STORM PREDICTION CENTER NORMAN OK
505 PM EDT MON JUL 11 2011

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

NORTHERN AND CENTRAL MAINE

EFFECTIVE THIS MONDAY AFTERNOON FROM 505 PM UNTIL MIDNIGHT EDT.

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 90
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 15 MILES NORTHEAST
OF HOULTON MAINE TO 95 MILES NORTHWEST OF BANGOR MAINE. FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU0).

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 627...WW 628...WW 629...

DISCUSSION...STORMS ARE INCREASING OVER PARTS OF NRN ME AS WELL AS
TO THE WEST OVER SRN QUEBEC. SUFFICIENT INSTABILITY WITH MLCAPE OF
1000-1500 J/KG COUPLED WITH 40 KT WLY FLOW AND ASSOCIATED STRONG
DEEP LAYER SHEAR WILL SUPPORT THREAT FOR SEVERE STORMS THROUGH THE
EVENING HOURS.

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 26030.

...WEISS

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