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947 

WWUS20 KWNS 160943

SEL8

SPC WW 160943

NYZ000-LOZ000-161700-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 618

NWS STORM PREDICTION CENTER NORMAN OK

545 AM EDT MON AUG 16 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       CENTRAL AND EASTERN NEW YORK

       LAKE ONTARIO



EFFECTIVE THIS MONDAY MORNING AND AFTERNOON FROM 545 AM UNTIL 100

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 60

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 30 MILES NORTH

NORTHEAST OF GLENS FALLS NEW YORK TO 40 MILES SOUTHWEST OF

ROCHESTER NEW YORK.  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.



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

FROM W TO E ACROSS WW REGION THROUGH LATER THIS MORNING AS

APPROACHING SHORTWAVE TROUGH /NOW NEARING LK ERIE/ ENHANCES ASCENT

WITHIN LOW LVL MOIST AXIS.  MODERATE TO SEASONABLY STRONG

UNIDIRECTIONAL WSW FLOW...COUPLED WITH HIGH PW...MAY YIELD SMALL

BOWING SEGMENTS WITH LOCALLY DMGG WIND AND MARGINALLY SVR

HAIL...DESPITE TIME OF DAY.



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 26035.





...CORFIDI

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