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Severe Thunderstorm Watch 317
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WW0317 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Low Low
Severe Wind 65 kt+ Wind
Moderate Low
Severe Hail 2"+ Hail
Low 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.
   SEL7

   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 317
   NWS STORM PREDICTION CENTER NORMAN OK
   220 PM EDT SAT JUN 20 2015

   THE NWS STORM PREDICTION CENTER HAS ISSUED A

   * SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
     DISTRICT OF COLUMBIA
     MARYLAND
     SOUTHERN PENNSYLVANIA
     NORTHERN VIRGINIA
     EASTERN AND NORTHERN WEST VIRGINIA
     COASTAL WATERS

   * EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 220 PM UNTIL
     1100 PM EDT.

   * PRIMARY THREATS INCLUDE...
     SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE
     ISOLATED LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE
     A TORNADO OR TWO POSSIBLE

   SUMMARY...TO THE EAST OF THE REMNANTS OF BILL...STRONG TO SEVERE
   THUNDERSTORMS ARE EXPECTED TO INCREASE THROUGH THE AFTERNOON/EARLY
   EVENING HOURS WITHIN AN ENVIRONMENT CHARACTERIZED BY MODERATE
   INSTABILITY AND INCREASING SHEAR. DAMAGING WINDS AND MARGINALLY
   SEVERE HAIL WILL BE POSSIBLE AND SOME TORNADO RISK WILL EXIST AS
   WELL.

   THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 55
   STATUTE MILES NORTH AND SOUTH OF A LINE FROM 45 MILES WEST OF
   ELKINS WEST VIRGINIA TO 20 MILES EAST NORTHEAST OF BALTIMORE
   MARYLAND.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
   ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU7).

   PRECAUTIONARY/PREPAREDNESS ACTIONS...

   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.

   &&

   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 26025.


   ...GUYER
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Page last modified: June 21, 2015
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