Severe Storm Outlook Narrative (AC)
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509
ACUS11 KWNS 300537
SWOMCD
SPC MCD 300537
ALZ000-MSZ000-LAZ000-300730-

MESOSCALE DISCUSSION 1851
NWS STORM PREDICTION CENTER NORMAN OK
1137 PM CST TUE NOV 29 2016

AREAS AFFECTED...PORTIONS OF MS...LA...WESTERN AL

CONCERNING...TORNADO WATCH 508

VALID 300537Z - 300730Z

THE SEVERE WEATHER THREAT FOR TORNADO WATCH 508 CONTINUES.

SUMMARY...THE RISK FOR SEVERE THUNDERSTORMS AND TORNADOES CONTINUES
ACROSS TORNADO WATCH 508.

DISCUSSION...A SEMI-CONTINUOUS SQUALL LINE IS ORGANIZING FROM
WEST-CENTRAL MS TO SOUTHWEST LA...WITH MORE ISOLATED CELLS/SUPERCELLS
EVOLVING WITHIN A WEAK WARM-ADVECTION PATTERN EAST OF THE LINE
ACROSS PARTS OF CENTRAL/EAST-CENTRAL MS. INFLOW FOR ALL OF THIS
ACTIVITY REMAINS MOIST AND UNSTABLE...AS MIDDLE 60S TO LOWER 70S
SURFACE DEWPOINTS EXIST ACROSS THE AREA. WITH THE DGX VAD WIND
PROFILE INDICATING AROUND 300 M2/S2 OF 0-1-KM SRH AND AMPLE DEEP
SHEAR...TORNADOES WILL REMAIN A CONCERN AS CONVECTION SPREADS
EASTWARD/EAST-NORTHEASTWARD ACROSS THE AREA. SUSTAINED SUPERCELL
STRUCTURES WILL SUPPORT THE GREATEST TORNADO RISK...WITH THE
POTENTIAL FOR SIGNIFICANT TORNADOES CONTINUING THROUGH THE OVERNIGHT
HOURS. THE SEVERE RISK WILL DECREASE IN THE WAKE OF THE SQUALL LINE.

..COHEN.. 11/30/2016

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...BMX...MEG...JAN...LIX...LCH...SHV...

LAT...LON   29989330 34029004 34008724 29989062 29989330




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