WWUS20 KWNS 161916
SEL3
SPC WW 161916
ILZ000-INZ000-MOZ000-170200-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 33
NWS STORM PREDICTION CENTER NORMAN OK
115 PM CST THU FEB 16 2006

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

       SOUTHERN AND CENTRAL ILLINOIS
       PART OF NORTHWEST INDIANA
       SOUTHERN AND EASTERN MISSOURI

EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 115 PM UNTIL
800 PM CST.

TORNADOES...HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 95 STATUTE MILES
NORTH AND SOUTH OF A LINE FROM 35 MILES NORTHEAST OF DANVILLE
ILLINOIS TO 30 MILES WEST NORTHWEST OF FLIPPIN ARKANSAS.  FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU3).

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND 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.

DISCUSSION...VERY STRONG SHEAR PROFILES ACROSS AREA AHEAD OF
VIGOROUS S/WV TROUGH.  SUFFICIENT INSTABILITY IN ADVANCE OF COLD
FRONT MOVING ACROSS NRN IL INTO SWRN MO TO SUPPORT SUPERCELLS AS
STORMS DEVELOP ALONG AND AHEAD OF FRONT. IN ADDITION TO INCREASING
DAMAGING WIND THREAT AS STORMS EVOLVE INTO BOWS AND SHORT
LINES...TORNADOES WILL BE POSSIBLE.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
450. MEAN STORM MOTION VECTOR 24045.


...HALES