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Severe Thunderstorm Watch 630
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WW0630 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Low Very Low
Severe Wind 65 kt+ Wind
Moderate Low
Severe Hail 2"+ Hail
Moderate Low

Note:  The expiration time in the watch graphic is amended if the watch is replaced, cancelled or extended.
Note: Click for Watch Status Reports.
   SEL0
   
   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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