WATCHES: Tornado Watch Number 676

WWUS20 KWNS 111857
SEL6
SPC WW 111857
ARZ000-LAZ000-OKZ000-TXZ000-120100-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 676
NWS STORM PREDICTION CENTER NORMAN OK
1255 PM CST SUN NOV 11 2012

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

SOUTHWEST ARKANSAS
NORTHWEST LOUISIANA
EXTREME SOUTHEAST OKLAHOMA
NORTHEAST TEXAS

EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 1255 PM UNTIL
700 PM CST.

TORNADOES...HAIL TO 1.5 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 EAST AND WEST OF A LINE FROM 55 MILES SOUTH OF TYLER TEXAS
TO 25 MILES NORTHWEST OF HOT SPRINGS ARKANSAS. FOR A COMPLETE
DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE
(WOUS64 KWNS WOU6).

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...PRE-FRONTAL BAND OF STORMS OVER NERN TX INTO EXTREME
SWRN AR IS EXPECTED TO SPREAD NEWD THIS AFTERNOON...WITH NEW STORM
DEVELOPMENT CONTINUING ON THE SRN END OF THE BAND. ADDITIONAL
STORMS MAY FORM ALONG THE ADVANCING COLD FRONT AS IT MOVES ACROSS
NRN TX AND EXTREME SERN OK/SWRN AR. STRONG LOW LEVEL AND DEEP LAYER
SHEAR COUPLED WITH SUFFICIENT INSTABILITY...ESPECIALLY OVER NERN TX
WHERE CAPE IS NEAR 1000 J/KG...WILL PROMOTE INTENSIFICATION OF
CONVECTION THIS AFTERNOON WITH A FEW SEVERE STORMS
EXPECTED...INCLUDING A THREAT FOR SEVERAL TORNADIC SUPERCELLS.

AVIATION...TORNADOES AND 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
450. MEAN STORM MOTION VECTOR 22040.


...WEISS

+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
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.