

099 

WWUS20 KWNS 232243

SEL8

SPC WW 232243

PAZ000-240400-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 398

NWS STORM PREDICTION CENTER NORMAN OK

645 PM EDT WED JUN 23 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       CENTRAL PENNSYLVANIA



EFFECTIVE THIS WEDNESDAY NIGHT FROM 645 PM UNTIL MIDNIGHT EDT.



HAIL TO 1 INCH 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 35

STATUTE MILES EAST AND WEST OF A LINE FROM 35 MILES EAST

NORTHEAST OF DUBOIS PENNSYLVANIA TO 65 MILES SOUTHWEST OF ALTOONA

PENNSYLVANIA.  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 395...WW 396...WW 397...



DISCUSSION...A LARGE MCS CONTINUES TO TRACK EASTWARD ACROSS WESTERN

PA PRODUCING GUSTY WINDS AND OCCASIONAL WIND DAMAGE.  THESE STORMS

ARE EXPECTED TO DECREASE IN INTENSITY THROUGH THE EVENING...BUT MAY

REMAIN LOCALLY SEVERE FOR ANOTHER FEW HOURS.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS.

A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. MEAN STORM MOTION

VECTOR 29030.





...HART

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