WATCHES: Severe Thunderstorm Watch Number 119

WWUS20 KWNS 301953
SEL9
SPC WW 301953
ILZ000-INZ000-310300-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 119
NWS STORM PREDICTION CENTER NORMAN OK
255 PM CDT FRI MAR 30 2012

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

SOUTHERN ILLINOIS
FAR SOUTHWEST INDIANA

EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 255 PM UNTIL
1000 PM CDT.

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 50
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 55 MILES SOUTHEAST
OF MATTOON ILLINOIS TO 25 MILES WEST SOUTHWEST OF SCOTT AFB
ILLINOIS. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU9).

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 118...

DISCUSSION...TSTMS DEVELOPING ALONG COLD FRONT SHOULD CONTINUE TO
INTENSIFY THIS AFTERNOON WHILE INTERACTING WITH A MOIST AND
MODERATELY UNSTABLE WARM SECTOR WHERE SBCAPE HAS RISEN TO 1500-2500
J/KG. LARGE-SCALE FORCING FOR ASCENT AND VERTICAL SHEAR MAY TEND TO
DIMINISH WITH TIME OWING TO THE EWD PROGRESSION OF MIDLEVEL IMPULSE
AWAY FROM THE REGION. NONETHELESS...THE STEEP LOW TO MIDLEVEL LAPSE
RATES AND MODERATE INSTABILITY WILL SUPPORT A RISK FOR SEVERE HAIL
AND DAMAGING WINDS WITH THE STRONGEST STORMS.

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 25025.

...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.