Tornado Watch in Effect in Mississippi, Louisiana & Alabama


URGENT – IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 140
NWS STORM PREDICTION CENTER NORMAN OK
735 AM CDT FRI APR 15 2011

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

WESTERN AND NORTHERN ALABAMA
CENTRAL AND EASTERN LOUISIANA
CENTRAL AND SOUTHERN MISSISSIPPI

EFFECTIVE THIS FRIDAY MORNING AND AFTERNOON FROM 735 AM UNTIL 300
PM CDT.

TORNADOES…HAIL TO 2 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 95 STATUTE
MILES EAST AND WEST OF A LINE FROM 25 MILES NORTHEAST OF MUSCLE
SHOALS ALABAMA TO 45 MILES SOUTH OF NATCHEZ MISSISSIPPI. FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU0).

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 139…

DISCUSSION…NE-SW MS/LA SQLN EXPECTED TO CONTINUE GENERALLY EWD
THROUGH EARLY AFTERNOON. SYSTEM MAY BREAK INTO MORE SEMI-DISCRETE
STORMS/LINE SEGMENTS…AND ADDITIONAL STORMS MAY FORM IN
CONFLUENT/MOISTENING LOW-LVL FLOW AHEAD OF LINE…AS SFC HEATING
FURTHER DESTABILIZES REGION. 12Z KJAN SOUNDING AND UPSTREAM WIND
PROFILES SUGGEST WW AREA WILL HAVE THERMODYNAMIC AND WIND
ENVIRONMENT SUPPORTIVE OF SUSTAINED SUPERCELLS AND LEWPS. THESE MAY
YIELD A COUPLE STRONG TORNADOES…IN ADDITION TO DMGG WIND AND HAIL.
STORMS IN NRN AL MAY REMAIN SLIGHTLY ELEVATED…BUT WILL STILL HAVE
THE POTENTIAL TO PRODUCE LOCALLY DMGG WIND AND PERHAPS ISOLD
TORNADOES.

AVIATION…TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
550. MEAN STORM MOTION VECTOR 25040.

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s