WATCHES: Tornado Watch Number 262

WWUS20 KWNS 051705
SEL2
SPC WW 051705
CTZ000-MAZ000-NYZ000-PAZ000-VTZ000-060000-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 262
NWS STORM PREDICTION CENTER NORMAN OK
100 PM EDT SAT JUN 5 2010

THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF

WESTERN CONNECTICUT
WESTERN MASSACHUSETTS
EASTERN NEW YORK
FAR NORTHEASTERN PENNSYLVANIA
VERMONT

EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 100 PM UNTIL
800 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 70 STATUTE
MILES EAST AND WEST OF A LINE FROM 35 MILES NORTH OF BURLINGTON
VERMONT TO 25 MILES WEST SOUTHWEST OF POUGHKEEPSIE 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.

DISCUSSION...DISCRETE STORMS ARE BEGINNING TO DEVELOP OVER THE
HIGHER TERRAIN OF NY. AIR MASS HAS BECOME MODERATELY UNSTABLE AND
SHOULD DESTABILIZE FURTHER WITH ADDITIONAL HEATING AND WEAK COOLING
ALOFT. UPPER LEVEL DIFFLUENCE SPREADING INTO THE AREA SHOULD HELP
INITIATE MORE STORMS THROUGH THE AFTERNOON AND THE DEEP LAYER SHEAR
IS SUPPORTIVE OF DISCRETE SUPERCELLS. THOUGH LARGE HAIL IS LIKELY TO
BE THE MAIN THREAT...THE COMBINATION OF STRONG SPEED SHEAR IN THE
LOWER 1 TO 2 KM AND A MOIST BOUNDARY LAYER INDICATES A SUPERCELL OR
TWO MAY PRODUCE 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
450. MEAN STORM MOTION VECTOR 28030.

...IMY

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