WWUS20 KWNS 071257
SEL3
SPC WW 071257
DCZ000-DEZ000-MDZ000-NJZ000-NYZ000-PAZ000-VAZ000-CWZ000-072100-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 543
NWS STORM PREDICTION CENTER NORMAN OK
900 AM EDT MON OCT 7 2013

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* TORNADO WATCH FOR PORTIONS OF 
  DISTRICT OF COLUMBIA
  DELAWARE
  CENTRAL AND NORTHERN MARYLAND
  NEW JERSEY
  CENTRAL AND EASTERN NEW YORK
  CENTRAL AND EASTERN PENNSYLVANIA
  NORTHERN VIRGINIA
  COASTAL WATERS

* EFFECTIVE THIS MONDAY MORNING AND AFTERNOON FROM 900 AM UNTIL
  500 PM EDT.

* PRIMARY THREATS INCLUDE...
  SEVERAL TORNADOES POSSIBLE
  SEVERAL DAMAGING WIND GUSTS WITH A FEW SIGNIFICANT GUSTS TO 75
    MPH POSSIBLE

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 100 STATUTE
MILES EAST AND WEST OF A LINE FROM 30 MILES SOUTHEAST OF
WASHINGTON DISTRICT OF COLUM TO 30 MILES NORTH NORTHEAST OF UTICA
NEW YORK.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU3).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND 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.

&&

DISCUSSION...GRADUAL INCREASE IN SVR POTENTIAL IS FCST THROUGH
REMAINDER MORNING AND INTO AFTN.  PRIMARY RISK WILL BE DAMAGING
WIND...ALTHOUGH A FEW TORNADOES MAY OCCUR WITH EITHER QLCS/BOW
CIRCULATIONS OR ANY SUPERCELLS THAT CAN DEVELOP AHEAD OF PRIMARY
CONVECTIVE BANDS.  MRGL BUOYANCY...RICH LOW-LEVEL MOISTURE...AND STG
DEEP/SPEED SHEAR WILL CHARACTERIZE AIR MASS IN PROSPECTIVE
CONVECTIVE INFLOW.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 0.5 INCH. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 65 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
450. MEAN STORM MOTION VECTOR 22035.


...EDWARDS