

191 

WWUS20 KWNS 102209

SEL4

SPC WW 102209

MDZ000-VAZ000-CWZ000-110300-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 54

NWS STORM PREDICTION CENTER NORMAN OK

610 PM EDT FRI APR 10 2015



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  MARYLAND EASTERN SHORE

  SOUTHEAST VIRGINIA

  COASTAL WATERS



* EFFECTIVE THIS FRIDAY EVENING FROM 610 PM UNTIL 1100 PM EDT.



* PRIMARY THREATS INCLUDE...

  SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

  ISOLATED VERY LARGE HAIL EVENTS TO 2 INCHES IN DIAMETER POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 65

STATUTE MILES EAST AND WEST OF A LINE FROM 15 MILES WEST

NORTHWEST OF SALISBURY MARYLAND TO 35 MILES SOUTHWEST OF NORFOLK

VIRGINIA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU4).



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.



&&



DISCUSSION...THUNDERSTORMS ARE INCREASING OVER SOUTHEAST VA IN A

REGION OF SUFFICIENT INSTABILITY AND FAVORABLE EFFECTIVE SHEAR.

MULTICELL OR OCCASIONAL SUPERCELL STORM STRUCTURES ARE EXPECTED WITH

DAMAGING WINDS THE MAIN THREAT.  HAIL WILL ALSO BE POSSIBLE IN THE

STRONGEST CELLS.



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

TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

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

MOTION VECTOR 26030.





...HART



949 

WWUS20 KWNS 102209

SEL4

SPC WW 102209

MDZ000-VAZ000-CWZ000-110300-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 54

NWS STORM PREDICTION CENTER NORMAN OK

610 PM EDT FRI APR 10 2015



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  MARYLAND EASTERN SHORE

  SOUTHEAST VIRGINIA

  COASTAL WATERS



* EFFECTIVE THIS FRIDAY EVENING FROM 610 PM UNTIL 1100 PM EDT.



* PRIMARY THREATS INCLUDE...

  SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

  ISOLATED VERY LARGE HAIL EVENTS TO 2 INCHES IN DIAMETER POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 65

STATUTE MILES EAST AND WEST OF A LINE FROM 15 MILES WEST

NORTHWEST OF SALISBURY MARYLAND TO 35 MILES SOUTHWEST OF NORFOLK

VIRGINIA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU4).



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.



&&



DISCUSSION...THUNDERSTORMS ARE INCREASING OVER SOUTHEAST VA IN A

REGION OF SUFFICIENT INSTABILITY AND FAVORABLE EFFECTIVE SHEAR.

MULTICELL OR OCCASIONAL SUPERCELL STORM STRUCTURES ARE EXPECTED WITH

DAMAGING WINDS THE MAIN THREAT.  HAIL WILL ALSO BE POSSIBLE IN THE

STRONGEST CELLS.



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

TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

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

MOTION VECTOR 26030.





...HART

