

012 

WWUS20 KWNS 261953

SEL6

SPC WW 261953

CTZ000-MAZ000-NHZ000-NJZ000-NYZ000-PAZ000-RIZ000-CWZ000-270300-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 626

NWS STORM PREDICTION CENTER NORMAN OK

350 PM EDT SUN JUL 26 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       CONNECTICUT

       MASSACHUSETTS

       SOUTHERN NEW HAMPSHIRE

       NORTHERN NEW JERSEY

       SOUTHERN NEW YORK

       EASTERN PENNSYLVANIA

       RHODE ISLAND

       COASTAL WATERS



EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 350 PM UNTIL

1100 PM EDT.



HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80

MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 80

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

WILMINGTON DELAWARE TO 35 MILES NORTH NORTHWEST OF WORCESTER

MASSACHUSETTS.  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 625...



DISCUSSION...AS UPPER IMPULSE APPROACHES FROM THE WEST...CONVECTION

IS EXPECTED TO BECOME MORE WIDESPREAD AND INTENSIFY ACROSS THE WATCH

AREA. DEEP LAYER SHEAR WILL BE SUFFICIENTLY STRONG FOR SUPERCELLS

WITH LARGE HAIL AND DAMAGING WINDS THE PRIMARY THREATS. AS COLD

FRONT MOVES IN FROM THE WEST THIS EVENING...STORMS MAY DEVELOP INTO

LINE SEGMENTS/BOWS...WHICH WOULD INCREASE THE POTENTIAL FOR WIND

DAMAGE.



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

TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. MEAN STORM

MOTION VECTOR 25030.





...IMY

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