Severe Thunderstorm Watch In Effect

For a large majority of the Northern Mid Atlantic. Just to our north, Tornado Watches are out. A potentially severe afternoon is shaping up across the entire Mid Atlantic and North East. Numerous tornadoes reported today from Buffalo to NYC. This will continue as a powerful cold front pushes eastward. Here is the latest for our area:

SEL6
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 636
   NWS STORM PREDICTION CENTER NORMAN OK
   1215 PM EDT SAT SEP 8 2012
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          DISTRICT OF COLUMBIA
          DELAWARE
          MUCH OF MARYLAND
          NEW JERSEY
          EASTERN PENNSYLVANIA
          NORTHERN VIRGINIA
          THE EASTERN PANHANDLE OF WEST VIRGINIA
          COASTAL WATERS
   
   EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 1215 PM UNTIL
   1000 PM EDT.
   
   HAIL TO 1 INCH 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 100
   STATUTE MILES EAST AND WEST OF A LINE FROM 50 MILES NORTH
   NORTHWEST OF ALLENTOWN PENNSYLVANIA TO 55 MILES SOUTHWEST OF
   WASHINGTON DISTRICT OF COLUM.  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 634...WW 635...
   
   DISCUSSION...FRONTAL SQUALL LINE IS EXPECTED TO INTENSIFY THIS
   AFTERNOON AS IT ENCOUNTERS THE AREA OF GREATER SURFACE
   HEATING/INSTABILITY ACROSS ERN PA/MD/VA.  INCREASING LOW-MIDLEVEL
   FLOW WITH AN EJECTING SHORTWAVE TROUGH WILL LIKEWISE CONTRIBUTE TO
   AN INCREASING RISK FOR WIDESPREAD DAMAGING WINDS THIS AFTERNOON THIS
   AFTERNOON/EVENING.
   
   AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
   TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS.
   A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. MEAN STORM MOTION
   VECTOR 26040.
   
   
   ...THOMPSON