

363 

WWUS20 KWNS 231539

SEL0

SPC WW 231539

ALZ000-LAZ000-MSZ000-TXZ000-CWZ000-240000-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 560

NWS STORM PREDICTION CENTER NORMAN OK

930 AM CST TUE DEC 23 2014



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* TORNADO WATCH FOR PORTIONS OF

  SOUTHWEST ALABAMA

  LOUISIANA

  SOUTHERN AND CENTRAL MISSISSIPPI

  FAR SOUTHEAST TEXAS

  COASTAL WATERS



* EFFECTIVE THIS TUESDAY MORNING AND EVENING FROM 930 AM UNTIL

  600 PM CST.



* PRIMARY THREATS INCLUDE...

  A FEW TORNADOES POSSIBLE

  SCATTERED DAMAGING WIND GUSTS TO 70 MPH LIKELY

  ISOLATED VERY LARGE HAIL EVENTS TO 2 INCHES IN DIAMETER POSSIBLE



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 100 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 65 MILES NORTH NORTHEAST OF

MOBILE ALABAMA TO 30 MILES WEST OF LAKE CHARLES LOUISIANA.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU0).



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.



&&



DISCUSSION...TSTMS EXPECTED TO GRADUALLY INCREASE IN

COVERAGE/STRENGTH OVER WW AREA THROUGH LATER TODAY AS REGION OF

LOW-LVL MOISTENING IS GLANCED BY LEAD IMPULSE /NOW IN CNTRL TX/

ASSOCIATED WITH BROAD...CNTRL U.S. UPR TROUGH. LOW-LVL FORCING WILL

REMAIN WEAK/FRAGMENTED...PRIMARILY ALONG NUMEROUS SSW-NNE CONFLUENCE

AXES. AT THE SAME TIME...LARGE-SCALE FORCING FOR ASCENT WILL BE

MODEST.  BUT COUPLED WITH FAIRLY EXPANSIVE AREA OF RETURNING

MOISTURE BENEATH A BROAD EML AND WITH AMPLE SWLY DEEP SHEAR FOR

SUPERCELLS...OVERALL SETUP YIELDS A SIZABLE AREA WITH A

COMPARATIVELY UNFOCUSED...BUT APPRECIABLE...RISK FOR OCCASIONAL

TORNADOES...SVR HAIL...AND LOCALLY DMGG WIND.



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

500. MEAN STORM MOTION VECTOR 23035.





...CORFIDI



285 

WWUS20 KWNS 231539

SEL0

SPC WW 231539

ALZ000-LAZ000-MSZ000-TXZ000-CWZ000-240000-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 560

NWS STORM PREDICTION CENTER NORMAN OK

930 AM CST TUE DEC 23 2014



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* TORNADO WATCH FOR PORTIONS OF

  SOUTHWEST ALABAMA

  LOUISIANA

  SOUTHERN AND CENTRAL MISSISSIPPI

  FAR SOUTHEAST TEXAS

  COASTAL WATERS



* EFFECTIVE THIS TUESDAY MORNING AND EVENING FROM 930 AM UNTIL

  600 PM CST.



* PRIMARY THREATS INCLUDE...

  A FEW TORNADOES POSSIBLE

  SCATTERED DAMAGING WIND GUSTS TO 70 MPH LIKELY

  ISOLATED VERY LARGE HAIL EVENTS TO 2 INCHES IN DIAMETER POSSIBLE



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 100 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 65 MILES NORTH NORTHEAST OF

MOBILE ALABAMA TO 30 MILES WEST OF LAKE CHARLES LOUISIANA.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU0).



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.



&&



DISCUSSION...TSTMS EXPECTED TO GRADUALLY INCREASE IN

COVERAGE/STRENGTH OVER WW AREA THROUGH LATER TODAY AS REGION OF

LOW-LVL MOISTENING IS GLANCED BY LEAD IMPULSE /NOW IN CNTRL TX/

ASSOCIATED WITH BROAD...CNTRL U.S. UPR TROUGH. LOW-LVL FORCING WILL

REMAIN WEAK/FRAGMENTED...PRIMARILY ALONG NUMEROUS SSW-NNE CONFLUENCE

AXES. AT THE SAME TIME...LARGE-SCALE FORCING FOR ASCENT WILL BE

MODEST.  BUT COUPLED WITH FAIRLY EXPANSIVE AREA OF RETURNING

MOISTURE BENEATH A BROAD EML AND WITH AMPLE SWLY DEEP SHEAR FOR

SUPERCELLS...OVERALL SETUP YIELDS A SIZABLE AREA WITH A

COMPARATIVELY UNFOCUSED...BUT APPRECIABLE...RISK FOR OCCASIONAL

TORNADOES...SVR HAIL...AND LOCALLY DMGG WIND.



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

500. MEAN STORM MOTION VECTOR 23035.





...CORFIDI

