ABC 33/40 EWARN: Severe Weather Watch Notice

From ABC 33/40 E-Warn :

WWUS20 KWNS 271131
SEL1
SPC WW 271131
ALZ000-LAZ000-MSZ000-CWZ000-271700-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 841
NWS STORM PREDICTION CENTER NORMAN OK
630 AM CDT FRI OCT 27 2006

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

SOUTHWEST ALABAMA
SOUTHEAST LOUISIANA
SOUTHERN MISSISSIPPI
COASTAL WATERS

EFFECTIVE THIS FRIDAY MORNING FROM 630 AM UNTIL NOON CDT.

TORNADOES...HAIL TO 0.5 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 50 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 15 MILES NORTHWEST OF HOUMA
LOUISIANA TO 45 MILES NORTHEAST OF MOBILE ALABAMA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU1).

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...LINE OF THUNDERSTORMS EXTENDS FROM SOUTH CENTRAL LA
INTO SOUTHERN MS. THESE STORMS ARE MOVING THROUGH A MOIST AND
MARGINALLY UNSTABLE AIRMASS WITH DEWPOINTS NEAR 70F AND CAPE VALUES
AROUND 500 J/KG. DESPITE WEAK THERMODYNAMIC PARAMETERS...VERY
STRONG WIND FIELDS AND DYNAMIC FORCING ARE PROVIDING THE POTENTIAL
FOR ISOLATED SUPERCELLS AND CAPABLE OF TORNADOES AND DAMAGING WINDS.
ACTIVITY MAY PERSIST THROUGH THE MORNING AND SPREAD EASTWARD INTO
SOUTHWEST AL.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 0.5 INCH. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
450. MEAN STORM MOTION VECTOR 26035.

...HART

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