New Tornado Watch

It is in Mississippi so most of that state is now under a Tornado Watch. The watch extents eastward to the Alabama border, but no part of Alabama is included so far.

URGENT – IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 91
NWS STORM PREDICTION CENTER NORMAN OK
1055 AM CDT MON APR 4 2011

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

EXTREME SOUTHEAST ARKANSAS
SOUTHERN LOUISIANA
CENTRAL MISSISSIPPI
EXTREME SOUTHEAST TEXAS
COASTAL WATERS

EFFECTIVE THIS MONDAY MORNING AND EVENING FROM 1055 AM UNTIL 600
PM CDT.

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 125 STATUTE
MILES EAST AND WEST OF A LINE FROM 50 MILES WEST NORTHWEST OF
COLUMBUS MISSISSIPPI TO 35 MILES SOUTH SOUTHWEST OF LAKE CHARLES
LOUISIANA. 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.

OTHER WATCH INFORMATION…CONTINUE…WW 87…WW 88…WW 89…WW
90…

DISCUSSION…WELL-DEVELOPED SQUALL ALONG THE COLD FRONT WILL
PROGRESS EWD AND PERSIST THROUGH THE AFTERNOON. A CONTINUED FEED OF
66-72 F DEWPOINTS AND MODEST SURFACE HEATING WILL RESULT IN MODERATE
INSTABILITY AHEAD OF THE LINE…WHILE DEEP-LAYER SWLY FLOW WILL
PROVIDE SUFFICIENT VERTICAL SHEAR FOR ORGANIZED/EMBEDDED BOWS AND
POSSIBLY SOME SUPERCELL STRUCTURES. DAMAGING WINDS WILL BE THE MAIN
THREAT…THOUGH A FEW TORNADOES WILL ALSO BE POSSIBLE WITH
CIRCULATIONS EMBEDDED IN THE LINE.

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 26040.

…THOMPSON

Category: Severe Weather