

981 

WWUS20 KWNS 090819

SEL4

SPC WW 090819

NYZ000-LEZ000-LOZ000-091300-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 14

NWS STORM PREDICTION CENTER NORMAN OK

320 AM EST WED JAN 9 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       WESTERN NEW YORK

       LAKE ERIE

       LAKE ONTARIO



EFFECTIVE THIS WEDNESDAY MORNING FROM 320 AM UNTIL 800 AM EST.



HAIL TO 0.5 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 50

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

BUFFALO NEW YORK TO 20 MILES EAST SOUTHEAST OF JAMESTOWN NEW

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

WATCH OUTLINE UPDATE (WOUS64 KWNS WOU4).



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 13...



DISCUSSION...LINE OF CONVECTION ALONG SURFACE COLD FRONT IS RACING

EAST-NORTHEASTWARD ACROSS OH INTO WESTERN NY.  DESPITE VERY LIMITED

LIGHTNING ACTIVITY IN LINE...LEADING EDGE OF CONVECTION CONTINUES TO

POSE A RISK OF LOCALLY DAMAGING WIND GUSTS.  ACTIVITY IS EXPECTED TO

SLOWLY WEAKEN THROUGH THE EARLY MORNING AS LINE INGESTS COOLER AND

MORE STABLE AIR MASS.



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

TO 0.5 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 350. MEAN STORM

MOTION VECTOR 24040.





...HART

