WATCHES: Severe Thunderstorm Watch Number 655

WWUS20 KWNS 131740
SEL5
SPC WW 131740
CTZ000-MAZ000-NJZ000-NYZ000-PAZ000-140000-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 655
NWS STORM PREDICTION CENTER NORMAN OK
140 PM EDT MON SEP 13 2010

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

WESTERN CONNECTICUT
WESTERN MASSACHUSETTS
NORTHERN NEW JERSEY
SOUTHEAST NEW YORK
NORTHEAST PENNSYLVANIA

EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 140 PM UNTIL 800
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 25 MILES SOUTH
SOUTHWEST OF ITHACA NEW YORK TO 35 MILES SOUTH OF WESTFIELD
MASSACHUSETTS. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).

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 CURRENTLY DEVELOPING NEAR BGM ARE EXPECTED TO
INCREASE IN COVERAGE AND INTENSITY THIS AFTERNOON IN ADVANCE OF
SHORT WAVE TROUGH AND ASSOCIATED 50-70 KT MIDLEVEL JET STREAK.
WHILE BOUNDARY LAYER IS NOT OVERLY HOT OR MOIST...THE PRESENCE OF
STEEP LOW TO MID-TROPOSPHERIC LAPSE RATES ARE CONTRIBUTING TO SBCAPE
APPROACHING 1000 J/KG. WHEN COUPLED WITH THE STRENGTHENING DEEP
NWLY SHEAR...SETUP WILL FAVOR THE DEVELOPMENT OF ORGANIZED STORM
MODES INCLUDING SUPERCELLS AND BOWS WITH A RISK FOR DAMAGING WINDS
AND HAIL.

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 29035.

...MEAD

+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
To unsubscribe from WX-STORM send e-mail to LISTSERV@LISTSERV.ILLINOIS.EDU with
"unsub wx-storm" in the body of your message. For more information write cnovy@cox.net.