Monday, April 13, 2009

Tornado Watch, North Alabama


   SEL1

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 151
NWS STORM PREDICTION CENTER NORMAN OK
100 PM CDT MON APR 13 2009

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

NORTHERN ALABAMA
SOUTHERN INDIANA
CENTRAL KENTUCKY
MIDDLE TENNESSEE

EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 100 PM UNTIL 800
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 70 STATUTE
MILES EAST AND WEST OF A LINE FROM 35 MILES SOUTHWEST OF
HUNTSVILLE ALABAMA TO 20 MILES NORTHWEST OF LOUISVILLE KENTUCKY.
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 149...WW 150...

DISCUSSION...BROKEN LINES OF THUNDERSTORMS WILL CONTINUE
DEVELOPING/INTENSIFYING ACROSS WW THIS AFTERNOON AHEAD OF SURFACE
COLD FRONT AND STRONG UPPER LOW. SHEAR REMAINS SUFFICIENT FOR
SUPERCELLS...AND ISOLATED TORNADO THREAT WITH MORE DISCRETE STORMS.
OTHERWISE...LARGE HAIL AND ISOLATED DAMAGING WINDS WILL ACCOMPANY
MORE INTENSE CORES THROUGH THE EVENING.

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
400. MEAN STORM MOTION VECTOR 20025.


...EVANS

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