[BNAWX] Severe Storm Outlook Narrative

[EMWIN Server]

ACUS11 KWNS 242248
SWOMCD
SPC MCD 242248
NCZ000-TNZ000-GAZ000-KYZ000-FLZ000-ALZ000-INZ000-ILZ000-MSZ000-MOZ000-242345-

MESOSCALE DISCUSSION 0382
NWS STORM PREDICTION CENTER NORMAN OK
0548 PM CDT SAT APR 24 2010

AREAS AFFECTED...ERN MS/AL/WRN GA/WRN FL PANHANDLE/WRN-MIDDLE
TN/WRN-CENTRAL KY

CONCERNING...TORNADO WATCH 94...95...96...

VALID 242248Z - 242345Z

THE SEVERE WEATHER THREAT FOR TORNADO WATCH
94...95...96...CONTINUES.

NEW TORNADO WATCH WILL LIKELY BE COORDINATED AND ISSUED FOR PARTS OF
WRN-NWRN GA INTO ERN TN BY 23-00Z.

LATE AFTERNOON SURFACE ANALYSIS SHOWED A DEEPENING AREA OF LOW
PRESSURE ACROSS EAST CENTRAL MO WITH A DRY LINE/WIND SHIFT EXTENDING
SSEWD INTO WRN TN...AND THEN SSWWD THROUGH CENTRAL MS TO SOUTH
CENTRAL LA.  RICH BOUNDARY LAYER MOISTURE EAST OF THE DRY LINE WILL
ADVECT ENEWD INTO WRN GA/ERN TN THIS EVENING AS THE 55 KT SSWLY LLJ
VEERS TO SWLY.  MEANWHILE...A PLUME OF STEEPER MIDLEVEL LAPSE RATES
/OBSERVED AT 18Z JAN SOUNDING/ IS EXPECTED TO SPREAD ENEWD TOWARD
THE SRN APPALACHIANS AND ATOP THE MOISTENING LOW LEVELS.  THIS WILL
AID IN FURTHER DESTABILIZATION FROM W-E.  DESPITE THE EXTENSIVE
CLOUD SHIELD EXTENDING FROM SRN-ERN AL INTO CENTRAL-NRN GA AND ERN
TN...EXPECTED DESTABILIZATION FROM W-E THIS EVENING AND ADDITIONAL
MOISTURE ADVECTION AIDING IN LOW LCLS WILL SUPPORT A TORNADO THREAT
GIVEN VERY STRONG LOW LEVEL AND DEEP LAYER SHEAR VALUES WITH THIS
SYSTEM.

THE STEEP LAPSE RATE ENVIRONMENT CURRENTLY SPREADING INTO ERN MS/WRN
AL AND NWD ACROSS WRN TN/WRN KY WHERE AIR MASS IS VERY MOIST WILL
CONTINUE TO SUPPORT THE LINE OF TSTMS MOVING INTO CENTRAL KY/MIDDLE
TN AND THE SEPARATE AREA OF STORMS OVER NRN AL/ EAST CENTRAL MS AND
FURTHER S ACROSS SRN AL/WRN FL PANHANDLE.

..PETERS.. 04/24/2010

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

ATTN...WFO...GSP...MRX...JKL...FFC...TAE...LMK...OHX...IND...
BMX...HUN...MOB...PAH...MEG...JAN...LIX...LSX...SGF...

LAT...LON   36548372 35008380 33328354 31958404 31698493 29378512
            29978669 29878832 29758873 30658850 31888875 31988921
            33248917 34978842 36188845 36999011 37369164 38049187
            38038964 38468799 38298536 38038439 36548372


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