

730 

WWUS20 KWNS 082321

SEL9

SPC WW 082321

DCZ000-MDZ000-VAZ000-CWZ000-090400-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 279

NWS STORM PREDICTION CENTER NORMAN OK

720 PM EDT MON JUN 8 2015



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  DISTRICT OF COLUMBIA

  CENTRAL AND NORTHERN MARYLAND

  NORTHERN VIRGINIA

  COASTAL WATERS



* EFFECTIVE THIS MONDAY NIGHT FROM 720 PM UNTIL MIDNIGHT EDT.



* PRIMARY THREATS INCLUDE...

  SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

  ISOLATED LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE



SUMMARY...SEVERE-THUNDERSTORM THREAT WILL EXTEND BEYOND ORIGINAL

EXPIRATION TIME OF SPC WATCH 276 ACROSS THIS AREA...AND HAS EVOLVED

TO BE MAINLY A DAMAGING-WIND RISK.  AS SUCH...AFFECTED COUNTIES WILL

BE MOVED TO THIS NEW WATCH...PER COORDINATION WITH WFO STERLING VA.

REF SPC MESOSCALE DISCUSSION 950 FOR MORE DETAILS.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 35

STATUTE MILES EAST AND WEST OF A LINE FROM 60 MILES SOUTHWEST OF

WASHINGTON DISTRICT OF COLUM TO 35 MILES NORTH NORTHEAST OF

BALTIMORE MARYLAND.  FOR A COMPLETE DEPICTION OF THE WATCH SEE

THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU9).



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.



&&



OTHER WATCH INFORMATION...CONTINUE...WW 274...WW 275...WW

276...WW 277...WW 278...



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 26030.





...EDWARDS



670 

WWUS20 KWNS 082321

SEL9

SPC WW 082321

DCZ000-MDZ000-VAZ000-CWZ000-090400-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 279

NWS STORM PREDICTION CENTER NORMAN OK

720 PM EDT MON JUN 8 2015



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  DISTRICT OF COLUMBIA

  CENTRAL AND NORTHERN MARYLAND

  NORTHERN VIRGINIA

  COASTAL WATERS



* EFFECTIVE THIS MONDAY NIGHT FROM 720 PM UNTIL MIDNIGHT EDT.



* PRIMARY THREATS INCLUDE...

  SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

  ISOLATED LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE



SUMMARY...SEVERE-THUNDERSTORM THREAT WILL EXTEND BEYOND ORIGINAL

EXPIRATION TIME OF SPC WATCH 276 ACROSS THIS AREA...AND HAS EVOLVED

TO BE MAINLY A DAMAGING-WIND RISK.  AS SUCH...AFFECTED COUNTIES WILL

BE MOVED TO THIS NEW WATCH...PER COORDINATION WITH WFO STERLING VA.

REF SPC MESOSCALE DISCUSSION 950 FOR MORE DETAILS.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 35

STATUTE MILES EAST AND WEST OF A LINE FROM 60 MILES SOUTHWEST OF

WASHINGTON DISTRICT OF COLUM TO 35 MILES NORTH NORTHEAST OF

BALTIMORE MARYLAND.  FOR A COMPLETE DEPICTION OF THE WATCH SEE

THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU9).



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.



&&



OTHER WATCH INFORMATION...CONTINUE...WW 274...WW 275...WW

276...WW 277...WW 278...



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 26030.





...EDWARDS

