

851 

WWUS20 KWNS 050036

SEL2

SPC WW 050036

DEZ000-MDZ000-VAZ000-CWZ000-050500-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 572

NWS STORM PREDICTION CENTER NORMAN OK

835 PM EDT WED AUG 4 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       DELAWARE

       EASTERN MARYLAND

       EASTERN VIRGINIA

       COASTAL WATERS



EFFECTIVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 835 PM

UNTIL 100 AM EDT.



HAIL TO 0.5 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 65

STATUTE MILES EAST AND WEST OF A LINE FROM 20 MILES NORTH

NORTHEAST OF DOVER DELAWARE TO 20 MILES EAST SOUTHEAST OF SOUTH

HILL VIRGINIA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).



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 567...WW 568...WW

569...WW 570...WW 571...



DISCUSSION...NRN PART OF FORWARD-PROPAGATING MCS IN CNTRL MD/VA

EXPECTED TO MOVE MAINLY ESE...WITH DEVELOPMENT NEAR BALTIMORE

AUGMENTING EWD MOTION TOWARD THE UPR CHESAPEAKE BAY/NRN DELMARVA

PENINSULA.  MARITIME AIR MASS SHOULD LIMIT SVR THREAT EWD INTO NJ.

FARTHER S...EXPECTED STORM MERGERS NEAR LYNCHBURG VA MAY SUPPORT

SE-PROPAGATING SEGMENTS WITH A THREAT FOR LOCALLY DMGG WIND SE

TOWARD THE VA TIDEWATER THROUGH MID EVE.  WIND THREAT SHOULD

DIMINISH IN RESPONSE TO LOSS OF SFC HEATING LATE LATER TONIGHT.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 0.5 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM

MOTION VECTOR 29030.





...CORFIDI

