Tornado Watch 207

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 207
NWS STORM PREDICTION CENTER NORMAN OK
345 PM CDT FRI APR 18 2008
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
SOUTHEASTERN LOUISIANA
PARTS OF CENTRAL AND SOUTHERN MISSISSIPPI
COASTAL WATERS
EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 345 PM UNTIL
1000 PM CDT.
TORNADOES...HAIL TO 2 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 60 STATUTE
MILES EAST AND WEST OF A LINE FROM 40 MILES NORTH NORTHWEST OF
MERIDIAN MISSISSIPPI TO 30 MILES SOUTHEAST OF HOUMA LOUISIANA.
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU7).
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...THUNDERSTORMS DEVELOPING IN AREA OF UNSTABLE AIR MASS
AHEAD OF APPROACHING S/WV TROUGH. SHEAR PROFILES ARE FAVORABLE FOR
SUPERCELLS AND WITH MLCAPES TO 1000 J/KG WIND DAMAGE AND TORNADOES
WILL BE POSSIBLE WITH SUPERCELLS. ACTIVITY WILL DEVELOP EWD ACROSS
WATCH THRU THE EVENING.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 24030.
...HALES