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WWUS20 KWNS 232157

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SPC WW 232157

CTZ000-NJZ000-NYZ000-PAZ000-CWZ000-240500-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 525

NWS STORM PREDICTION CENTER NORMAN OK

555 PM EDT FRI JUL 23 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       SOUTHWEST CONNECTICUT

       NORTHERN NEW JERSEY

       SOUTHEAST NEW YORK

       FAR NORTHEAST PENNSYLVANIA

       COASTAL WATERS



EFFECTIVE THIS FRIDAY AFTERNOON AND SATURDAY MORNING FROM 555 PM

UNTIL 100 AM EDT.



TORNADOES...HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 45 STATUTE

MILES EITHER SIDE OF A LINE FROM 30 MILES NORTH NORTHWEST OF

WILKESBARRE PENNSYLVANIA TO 25 MILES EAST OF NEW YORK CITY NEW

YORK.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED

WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).



REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR

TORNADOES AND 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.



OTHER WATCH INFORMATION...CONTINUE...WW 521...WW 522...WW

523...WW 524...



DISCUSSION...CLUSTER OF TSTMS /INCLUDING SUPERCELLS/ OVER NERN PA IS

EXPECTED TO PROGRESS SEWD ALONG WARM FRONT RETREATING NWD THROUGH

NRN NJ INTO SERN NY.  AIR MASS ALONG AND S OF THIS BOUNDARY IS HOT

AND QUITE MOIST WITH MLCAPE OF 1000-2000 J/KG.  AREA VWPS INDICATE

MODERATELY STRONG LOW AND DEEP-LAYER SHEAR PRESENT INVOF OF THE WARM

FRONT...SUGGESTING THAT ENVIRONMENT WILL REMAIN SUPPORTIVE OF

ROTATING UPDRAFTS THROUGH THE REMAINDER OF THE EVENING.  WHILE

LOCALLY DAMAGING WIND GUSTS WILL BE THE PRIMARY HAZARD...THE

POTENTIAL FOR A FEW TORNADOES WILL EXIST WITH ANY STORMS THAT CAN

FAVORABLY INTERACT WITH THE LOW-LEVEL BAROCLINIC ZONE.



AVIATION...TORNADOES AND 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 30035.





...MEAD

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