

000 

WWUS20 KWNS 090030

SEL3

SPC WW 090030

MDZ000-NJZ000-NYZ000-PAZ000-VTZ000-090300-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 373

NWS STORM PREDICTION CENTER NORMAN OK

830 PM EDT FRI JUN 8 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       EXTREME NORTHEAST MARYLAND

       WESTERN NEW JERSEY

       EASTERN NEW YORK

       EASTERN PENNSYLVANIA

       WESTERN AND NORTHERN VERMONT



EFFECTIVE THIS FRIDAY EVENING FROM 830 PM UNTIL 1100 PM 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 55

STATUTE MILES EAST AND WEST OF A LINE FROM 45 MILES NORTH

NORTHEAST OF SARANAC LAKE NEW YORK TO 45 MILES SOUTH SOUTHWEST OF

ALLENTOWN PENNSYLVANIA.  FOR A COMPLETE DEPICTION OF THE WATCH

SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU3).



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 370...WW 371...WW 372...



DISCUSSION...EXISTING SQLN...BACKED BY DEEP LAYER OF 40 KT WSW

FLOW...SHOULD CONTINUE E INTO THE REMAINDER OF UPSTATE NY AND NE

PA...WHERE NARROW AXIS OF STEEP LOW LEVEL LAPSE RATES PERSISTS.

ADDITIONAL ISOLATED STRONG TO LOCALLY SVR STORMS MAY CONTINUE TO

FORM AHEAD OF THE LINE AS CONVERGENCE/UVV ARE ENHANCED BY GLANCING

PASSAGE OF SRN ONTARIO SHORTWAVE TROUGH.  ACTIVITY SHOULD WEAKEN

WITH LOSS OF DIURNAL HEATING AND AS AREA OF ASCENT MOVES INTO

MARINE-INFLUENCED AIR MASS FARTHER E LATER THIS EVENING.



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 500. MEAN STORM MOTION

VECTOR 27025.





...CORFIDI

