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Severe Thunderstorm Watch 356
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WW0356 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Low Very Low
Severe Wind 65 kt+ Wind
Moderate Moderate
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.
   SEL6
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 356
   NWS STORM PREDICTION CENTER NORMAN OK
   1240 PM EDT SUN JUN 20 2010
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          MUCH OF EASTERN MASSACHUSETTS
          MUCH OF MAINE
          MUCH OF NEW HAMPSHIRE
          COASTAL WATERS
   
   EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 1240 PM UNTIL
   700 PM 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 85
   STATUTE MILES NORTH AND SOUTH OF A LINE FROM 40 MILES SOUTH
   SOUTHEAST OF HOULTON MAINE TO 45 MILES NORTH NORTHWEST OF
   WORCESTER MASSACHUSETTS.  FOR A COMPLETE DEPICTION OF THE WATCH
   SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU6).
   
   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.
   
   DISCUSSION...THUNDERSTORMS ARE INCREASING IN NUMBER AND INTENSITY
   OVER THE MOUNTAINS OF NEW ENGLAND.  WITH STRONG HEATING ACROSS LOWER
   ELEVATIONS...MLCAPES ARE AOA 1000 J/KG.  COUPLED WITH 30-35 KT OF
   SHEAR...A FEW OF THE THUNDERSTORMS WILL BECOME SEVERE AS THEY
   DEVELOP/MOVE EWD ACROSS THE WATCH.
   
   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 500. MEAN STORM
   MOTION VECTOR 27025.
   
   
   ...HALES
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