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WWUS20 KWNS 261818

SEL2

SPC WW 261818

NYZ000-PAZ000-270200-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 382

NWS STORM PREDICTION CENTER NORMAN OK

220 PM EDT THU MAY 26 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       CENTRAL AND EASTERN NEW YORK

       NORTHEAST PENNSYLVANIA



EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 220 PM UNTIL

1000 PM EDT.



TORNADOES...HAIL TO 2 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 85 STATUTE

MILES EAST AND WEST OF A LINE FROM 40 MILES NORTHWEST OF GLENS

FALLS NEW YORK TO 20 MILES SOUTH OF BINGHAMTON NEW YORK.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU2).



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 379...WW 380...WW 381...



DISCUSSION...TSTMS ARE EXPECTED TO INCREASE IN COVERAGE AND

INTENSITY THIS AFTERNOON ACROSS WATCH AREA WITHIN AN AIR MASS

CHARACTERIZED BY BOUNDARY LAYER DEWPOINTS IN THE MID/UPPER 60S AND

MLCAPE VALUES OF 1500-2500 J/KG.  THIS INSTABILITY COUPLED WITH

EFFECTIVE BULK SHEAR OF 40-50 KT AND A CORRIDOR OF ENHANCED

LOW-LEVEL SHEAR /NAMELY OVER THE HUDSON VALLEY/...WILL FAVOR THE

DEVELOPMENT OF SUPERCELLS CAPABLE OF VERY LARGE HAIL...DAMAGING

WINDS AND TORNADOES.



AVIATION...TORNADOES AND 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 24030.





...MEAD

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