

535 

WWUS20 KWNS 131805

SEL7

SPC WW 131805

ARZ000-LAZ000-MOZ000-MSZ000-TNZ000-140200-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 537

NWS STORM PREDICTION CENTER NORMAN OK

1255 PM CDT MON OCT 13 2014



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* TORNADO WATCH FOR PORTIONS OF

  EASTERN ARKANSAS

  NORTHEAST LOUISIANA

  THE MISSOURI BOOTHEEL

  MISSISSIPPI

  WEST TENNESSEE



* EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 1255 PM UNTIL

  900 PM CDT.



* PRIMARY THREATS INCLUDE...

  SEVERAL TORNADOES LIKELY WITH A COUPLE INTENSE TORNADOES

    POSSIBLE

  SCATTERED DAMAGING WINDS AND ISOLATED SIGNIFICANT GUSTS TO 75

    MPH POSSIBLE

  ISOLATED LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 70 STATUTE

MILES EAST AND WEST OF A LINE FROM 50 MILES NORTHEAST OF

DYERSBURG TENNESSEE TO 55 MILES EAST SOUTHEAST OF NATCHEZ

MISSISSIPPI.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU7).



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 534...WW 535...WW 536...



DISCUSSION...EXTENSIVE...BROKEN SSW-NNE SQLN NOW EXTENDING FROM NE

LA TO SE MO SHOULD CONTINUE SLOWLY EWD...ROUGHLY WITH THE SPEED OF

SUPPORTING SRN PLNS SHORTWAVE TROUGH. THE LINE LIKELY WILL CONTAIN

ADDITIONAL LONG-LIVED LEWPS/SUB-SYNOPTIC LOWS AS INFLUENCE OF UPR

TROUGH INCREASES...YIELDING STRENGTHENING SSWLY DEEP SHEAR OVER WW

REGION. COUPLED WITH FURTHER HEATING OF VERY

MOIST...WEAKLY-CAPPED...CONFLUENT LOW-LVL ENVIRONMENT E/SE OF THE

LINE...SETUP COULD SUPPORT A FEW LONGER-LIVED SUPERCELLS WITH

TORNADOES...BOTH WITHIN AND AHEAD OF THE LINE. DESPITE MODEST

MID-LVL LAPSE RATES...A COUPLE OF THE TORNADOES COULD BE STRONG

GIVEN LOW LCLS...SIZABLE LOW-LVL DIRECTIONAL SHEAR AND 60+ KT 700 MB

FLOW.



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

SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 65 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

500. MEAN STORM MOTION VECTOR 23040.





...CORFIDI



187 

WWUS20 KWNS 131805

SEL7

SPC WW 131805

ARZ000-LAZ000-MOZ000-MSZ000-TNZ000-140200-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 537

NWS STORM PREDICTION CENTER NORMAN OK

1255 PM CDT MON OCT 13 2014



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* TORNADO WATCH FOR PORTIONS OF

  EASTERN ARKANSAS

  NORTHEAST LOUISIANA

  THE MISSOURI BOOTHEEL

  MISSISSIPPI

  WEST TENNESSEE



* EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 1255 PM UNTIL

  900 PM CDT.



* PRIMARY THREATS INCLUDE...

  SEVERAL TORNADOES LIKELY WITH A COUPLE INTENSE TORNADOES

    POSSIBLE

  SCATTERED DAMAGING WINDS AND ISOLATED SIGNIFICANT GUSTS TO 75

    MPH POSSIBLE

  ISOLATED LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 70 STATUTE

MILES EAST AND WEST OF A LINE FROM 50 MILES NORTHEAST OF

DYERSBURG TENNESSEE TO 55 MILES EAST SOUTHEAST OF NATCHEZ

MISSISSIPPI.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU7).



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 534...WW 535...WW 536...



DISCUSSION...EXTENSIVE...BROKEN SSW-NNE SQLN NOW EXTENDING FROM NE

LA TO SE MO SHOULD CONTINUE SLOWLY EWD...ROUGHLY WITH THE SPEED OF

SUPPORTING SRN PLNS SHORTWAVE TROUGH. THE LINE LIKELY WILL CONTAIN

ADDITIONAL LONG-LIVED LEWPS/SUB-SYNOPTIC LOWS AS INFLUENCE OF UPR

TROUGH INCREASES...YIELDING STRENGTHENING SSWLY DEEP SHEAR OVER WW

REGION. COUPLED WITH FURTHER HEATING OF VERY

MOIST...WEAKLY-CAPPED...CONFLUENT LOW-LVL ENVIRONMENT E/SE OF THE

LINE...SETUP COULD SUPPORT A FEW LONGER-LIVED SUPERCELLS WITH

TORNADOES...BOTH WITHIN AND AHEAD OF THE LINE. DESPITE MODEST

MID-LVL LAPSE RATES...A COUPLE OF THE TORNADOES COULD BE STRONG

GIVEN LOW LCLS...SIZABLE LOW-LVL DIRECTIONAL SHEAR AND 60+ KT 700 MB

FLOW.



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

SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 65 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

500. MEAN STORM MOTION VECTOR 23040.





...CORFIDI

