

131 

WWUS20 KWNS 132041

SEL0

SPC WW 132041

ALZ000-TNZ000-140500-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 540

NWS STORM PREDICTION CENTER NORMAN OK

340 PM CDT MON OCT 13 2014



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* TORNADO WATCH FOR PORTIONS OF

  WESTERN...CENTRAL...AND NORTHERN ALABAMA

  MIDDLE TENNESSEE



* EFFECTIVE THIS MONDAY AFTERNOON FROM 340 PM UNTIL MIDNIGHT CDT.



* PRIMARY THREATS INCLUDE...

  A FEW TORNADOES LIKELY

  SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

  ISOLATED LARGE HAIL EVENTS TO 1 INCH IN DIAMETER POSSIBLE



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 70 STATUTE

MILES EAST AND WEST OF A LINE FROM 35 MILES NORTH OF NASHVILLE

TENNESSEE TO 25 MILES SOUTHWEST OF SELMA ALABAMA.  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.



&&



OTHER WATCH INFORMATION...CONTINUE...WW 535...WW 536...WW

537...WW 538...WW 539...



DISCUSSION...SVR WEATHER THREAT EXPECTED TO INCREASE IN WW AREA

THROUGH LATE EVE...BOTH FROM SLOWLY-PROGRESSIVE WRN TN/CNTRL MS

SQLN...AND FROM STORMS FORMING AHEAD OF LINE IN

WEAKLY-CAPPED...MOIST...CONFLUENT LOW-LVL FLOW. LARGE-SCALE ASCENT

AND SSWLY DEEP SHEAR BOTH WILL FURTHER INCREASE OVER THE REGION

AHEAD OF SRN PLNS UPR TROUGH...AND SLY LOW-LVL FLOW WILL CONTINUE.

THESE PROCESSES WILL SOMEWHAT OFFSET MITIGATING FACTORS POSED BY

SUNSET AND BY LOCALIZED STABILIZATION OCCURRING IN WAKE OF CURRENT

TSTMS IN CNTRL AL.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND

GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.

MEAN STORM MOTION VECTOR 21040.





...CORFIDI



840 

WWUS20 KWNS 132041

SEL0

SPC WW 132041

ALZ000-TNZ000-140500-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 540

NWS STORM PREDICTION CENTER NORMAN OK

340 PM CDT MON OCT 13 2014



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* TORNADO WATCH FOR PORTIONS OF

  WESTERN...CENTRAL...AND NORTHERN ALABAMA

  MIDDLE TENNESSEE



* EFFECTIVE THIS MONDAY AFTERNOON FROM 340 PM UNTIL MIDNIGHT CDT.



* PRIMARY THREATS INCLUDE...

  A FEW TORNADOES LIKELY

  SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

  ISOLATED LARGE HAIL EVENTS TO 1 INCH IN DIAMETER POSSIBLE



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 70 STATUTE

MILES EAST AND WEST OF A LINE FROM 35 MILES NORTH OF NASHVILLE

TENNESSEE TO 25 MILES SOUTHWEST OF SELMA ALABAMA.  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.



&&



OTHER WATCH INFORMATION...CONTINUE...WW 535...WW 536...WW

537...WW 538...WW 539...



DISCUSSION...SVR WEATHER THREAT EXPECTED TO INCREASE IN WW AREA

THROUGH LATE EVE...BOTH FROM SLOWLY-PROGRESSIVE WRN TN/CNTRL MS

SQLN...AND FROM STORMS FORMING AHEAD OF LINE IN

WEAKLY-CAPPED...MOIST...CONFLUENT LOW-LVL FLOW. LARGE-SCALE ASCENT

AND SSWLY DEEP SHEAR BOTH WILL FURTHER INCREASE OVER THE REGION

AHEAD OF SRN PLNS UPR TROUGH...AND SLY LOW-LVL FLOW WILL CONTINUE.

THESE PROCESSES WILL SOMEWHAT OFFSET MITIGATING FACTORS POSED BY

SUNSET AND BY LOCALIZED STABILIZATION OCCURRING IN WAKE OF CURRENT

TSTMS IN CNTRL AL.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND

GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.

MEAN STORM MOTION VECTOR 21040.





...CORFIDI

