

000 

WWUS20 KWNS 231835

SEL8

SPC WW 231835

CTZ000-DEZ000-MAZ000-MDZ000-NJZ000-NYZ000-PAZ000-RIZ000-CWZ000-24020

0-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 738

NWS STORM PREDICTION CENTER NORMAN OK

235 PM EDT WED JUL 23 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       CONNECTICUT

       DELAWARE

       PARTS OF WESTERN MASSACHUSETTS

       PARTS OF EASTERN MARYLAND

       NEW JERSEY

       PARTS OF SOUTHEAST NEW YORK

       SMALL PART OF SOUTHEAST PENNSYLVANIA

       RHODE ISLAND

       COASTAL WATERS



EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 235 PM UNTIL

1000 PM EDT.



HAIL TO 1.5 INCHES 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 75

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

NORTHEAST OF WESTFIELD MASSACHUSETTS TO 50 MILES SOUTH SOUTHEAST

OF DOVER DELAWARE.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU8).



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 735...WW 736...WW 737...



DISCUSSION...THUNDERSTORMS WILL INCREASE IN NUMBER AND INTENSITY

ACROSS WATCH AREA WHERE AIR MASS IS NOW UNSTABLE AND FAVORABLY

SHEARED.  WITH 30-40KT OF DEEP LAYER SHEAR AND MLCAPES AOA 2000

J/KG...MULTICELLULAR AND SUPERCELLS WILL BE POSSIBLE.  PRIMARY

THREAT WILL BE WIND DAMAGE AND MARGINALLY SEVERE HAIL ALONG WITH

POSSIBLE ISOLATED BRIEF TORNADOES ASSOCIATED WITH ANY SUPERCELL THAT

IS ABLE TO DEVELOP.



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 22030.





...HALES

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