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633 

WWUS20 KWNS 292059

SEL8

SPC WW 292059

ALZ000-TNZ000-300300-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 118

NWS STORM PREDICTION CENTER NORMAN OK

355 PM CDT TUE APR 29 2014



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* TORNADO WATCH FOR PORTIONS OF

  CENTRAL AND NORTHERN ALABAMA

  A SMALL PART OF SOUTHERN MIDDLE TENNESSEE



* EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 355 PM UNTIL

  1000 PM CDT.



* PRIMARY THREATS INCLUDE...

  A COUPLE TORNADOES POSSIBLE

  ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

  ISOLATED LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 75 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 40 MILES WEST NORTHWEST OF

TUSCALOOSA ALABAMA TO 30 MILES NORTHEAST OF GADSDEN ALABAMA.  FOR

A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU8).



PRECAUTIONARY/PREPAREDNESS ACTIONS...



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 116...WW 117...



DISCUSSION...SCATTERED THUNDERSTORMS HAVE DEVELOPED ALONG THE WIND

SHIFT ACROSS CENTRAL/NRN MS...IN CONJUNCTION WITH AN EJECTING

MID-UPPER JET STREAK.  RECOVERY FROM THE MORNING MCS HAS BEEN SLOWED

BY CONTINUED STORM DEVELOPMENT ALONG THE GULF COAST...AND LAPSE

RATES ALOFT REMAIN RELATIVELY POOR PER 18Z BMX AND 20Z UAH

SOUNDINGS.  ADDITIONALLY...THE WIND PROFILES ARE CHARACTERIZED BY

MODEST LOW-LEVEL SHEAR AND VERY STRONG SPEED SHEAR ALOFT...IN THE

ZONE OF POOR LAPSE RATES.  THERE ARE A FEW CONCERNS REGARDING ANY

HIGHER-END SEVERE WEATHER THREAT...BUT STILL SOME POTENTIAL FOR

SUPERCELLS AND/OR EVOLUTION OF STORMS INTO A CLUSTER LATER.  A

COUPLE OF TORNADOES ARE STILL POSSIBLE...ALONG WITH LARGE HAIL AND

DAMAGING WINDS.



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

450. MEAN STORM MOTION VECTOR 25035.





...THOMPSON

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