First Tornado Watch

URGENT – IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 753
NWS STORM PREDICTION CENTER NORMAN OK
130 PM CST MON NOV 29 2010

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

SOUTHERN ARKANSAS
WESTERN AND CENTRAL LOUISIANA
WESTERN MISSISSIPPI
EASTERN TEXAS
COASTAL WATERS

EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 130 PM UNTIL 900
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 75 STATUTE
MILES EAST AND WEST OF A LINE FROM 20 MILES EAST OF PORT ARTHUR
TEXAS TO 10 MILES NORTH OF GREENVILLE MISSISSIPPI. 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…TSTMS WILL CONTINUE TO INCREASE IN COVERAGE AND
INTENSITY THIS AFTERNOON INTO EVENING ALONG PACIFIC FRONT AND SW-NE
ORIENTED CONFLUENCE BAND WHICH ARE SLOWLY PROGRESSING EWD THROUGH
ERN TX. 18Z SUPPLEMENTAL SOUNDINGS INDICATE THAT MOISTENING AND
WARMING OF THE BOUNDARY LAYER HAVE GREATLY REDUCED THE PRONOUNCED
CAP OBSERVED AT 12Z. GIVEN THE RELATIVELY STRONG LOW AND DEEP-LAYER
SHEAR IN PLACE…ENVIRONMENT WILL BE SUPPORTIVE OF SUPERCELLS
CAPABLE OF TORNADOES…DAMAGING WINDS AND SOME HAIL. THIS THREAT
SHOULD DEVELOP NEWD THROUGH THE REMAINDER OF THE AFTERNOON INTO
TONIGHT ALONG RETREATING WARM FRONT AND SECONDARY SURFACE LOW
DEVELOPING THROUGH ERN AR/WRN MS.

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
500. MEAN STORM MOTION VECTOR 23035.

…MEAD

Tags: tornado, watch

Category: Severe Weather