WATCHES: Tornado Watch Number 147

WWUS20 KWNS 151210
SEL7
SPC WW 151210
NCZ000-SCZ000-CWZ000-151900-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 147
NWS STORM PREDICTION CENTER NORMAN OK
810 AM EDT SUN APR 15 2007

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

EASTERN NORTH CAROLINA
EASTERN SOUTH CAROLINA
COASTAL WATERS

EFFECTIVE THIS SUNDAY MORNING AND AFTERNOON FROM 810 AM UNTIL 300
PM EDT.

TORNADOES...HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 75 STATUTE
MILES EAST AND WEST OF A LINE FROM 70 MILES SOUTH SOUTHWEST OF
ORANGEBURG SOUTH CAROLINA TO 55 MILES NORTH OF NEW BERN NORTH
CAROLINA. 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.

OTHER WATCH INFORMATION...CONTINUE...WW 145...WW 146...

DISCUSSION...BROKEN PRE-FRONTAL BAND OF THUNDERSTORMS WILL CONTINUE
TO SPREAD EWD/NEWD ACROSS SC/NC THROUGH MIDDAY AS A SURFACE LOW
DEEPENS AND MOVES NEWD FROM THE PIEDMONT...AND A COLD FRONT SWEEPS
EWD ACROSS GA/SC. THOUGH INSTABILITY REMAINS RATHER WEAK IN THE
WARM SECTOR...BOUNDARY LAYER DEWPOINTS IN THE MID-UPPER 60S AND
STRONG VERTICAL SHEAR PROFILES WILL BE FAVORABLE FOR SUPERCELLS AND
AN ASSOCIATED TORNADO THREAT WITHIN THE LARGER CONVECTIVE BAND.
INITIALLY...THE TORNADO THREAT WILL BE FOCUSED IN SC...WITH AN
INCREASING THREAT EXPECTED BY MID-LATE MORNING ACROSS ERN NC.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450.
MEAN STORM MOTION VECTOR 24045.

..THOMPSON

+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
To unsubscribe from WX-STORM send e-mail to LISTSERV@PO.UIUC.EDU with
"unsub wx-storm" in the body of your message. For more information write chris@lib.siu.edu.