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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
   205 PM EDT TUE JUN 9 2009
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          DISTRICT OF COLUMBIA
          EXTREME NORTHEAST KENTUCKY
          MUCH OF MARYLAND
          SOUTHEAST OHIO
          NORTHERN VIRGINIA
          NORTHERN AND CENTRAL WEST VIRGINIA
          COASTAL WATERS
   
   EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 205 PM UNTIL
   900 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 50
   STATUTE MILES NORTH AND SOUTH OF A LINE FROM 40 MILES SOUTH
   SOUTHWEST OF ATHENS OHIO TO 25 MILES SOUTHEAST OF BALTIMORE
   MARYLAND.  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.
   
   OTHER WATCH INFORMATION...CONTINUE...WW 354...WW 355...
   
   DISCUSSION...SCATTERED THUNDERSTORMS WILL PERSIST THROUGH THE
   AFTERNOON ALONG AND SE OF A SLOW-MOVING COLD FRONT ACROSS SE OH AND
   CENTRAL PA.  THOUGH DEEP LAYER FLOW AND VERTICAL SHEAR IS WEAKER
   THAN AREAS FARTHER N...MODERATE TO STRONG INSTABILITY WITH DAYTIME
   HEATING AND STEEP MID LEVEL LAPSE RATES WILL SUPPORT A THREAT FOR
   DAMAGING DOWNBURST WINDS AND LARGE HAIL WITH MULTICELL CLUSTERS. 
   ACTIVITY IS EXPECTED TO SPREAD SLOWLY SEWD THROUGH THE AFTERNOON
   ACROSS WV AND NRN VA.
   
   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 29020.
   
   
   ...THOMPSON
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