Tornado Watch #68

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 68...RESENT
NWS STORM PREDICTION CENTER NORMAN OK
110 AM CST SUN MAR 12 2006

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

NORTHERN ARKANSAS
SOUTHERN ILLINOIS
SOUTHEASTERN INDIANA
WESTERN KENTUCKY
SOUTHERN MISSOURI

EFFECTIVE THIS SUNDAY MORNING FROM 110 AM UNTIL 800 AM CST.

TORNADOES...HAIL TO 2.5 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 70 STATUTE MILES
NORTH AND SOUTH OF A LINE FROM 30 MILES WEST NORTHWEST OF
FAYETTEVILLE ARKANSAS TO 35 MILES EAST NORTHEAST OF OWENSBORO
KENTUCKY. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU8).

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.

OTHER WATCH INFORMATION...THIS TORNADO WATCH REPLACES TORNADO
WATCH NUMBER 64 TORNADO WATCH NUMBER 65...TORNADO WATCH NUMBER
66...TORNADO WATCH NUMBER 67. WATCH NUMBER 64 65 66 67 WILL NOT BE
IN EFFECT AFTER 110 AM CST.

DISCUSSION...SUPERCELLS CONTINUE TO FOCUS ALONG AND JUST NORTH OF
CONFLUENT SURFACE OUTFLOW BOUNDARY EXTENDING FROM THE OZARK REGION
NEWD INTO THE OH RIVER VALLEY. AIR MASS REMAINS MARGINALLY TO
MODERATELY UNSTABLE AND SIGNIFICANT SHEAR WILL PERSIST OVERNIGHT.
EXPECT CONTINUED THREAT OF SUPERCELLS WITH LARGE HAIL AND TORNADOES
BEING PRIMARY SEVERE THREATS AS STORMS MOVE E-NEWD THROUGH THE
NIGHT.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 25040.


...EVANS