[BNAWX] Severe Storm Outlook Narrative

[EMWIN Server]

ACUS11 KWNS 222002
SWOMCD
SPC MCD 222002
NCZ000-SCZ000-TNZ000-GAZ000-ALZ000-MSZ000-222200-

MESOSCALE DISCUSSION 1861
NWS STORM PREDICTION CENTER NORMAN OK
0302 PM CDT TUE JUL 22 2008

AREAS AFFECTED...PORTIONS WRN NC...SRN MIDDLE TN...ERN
TN...CENTRAL/NRN GA...NRN/ERN AL...CENTRAL/NRN MS...WRN SC.

CONCERNING...SEVERE THUNDERSTORM WATCH 725...728...

VALID 222002Z - 222200Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH
725...728...CONTINUES.

SCATTERED-NUMEROUS MULTICELL TSTMS HAVE DEVELOPED OVER MOST OF WW
725 AREA...ANY OF WHICH MAY PULSE TO SVR LEVELS WITH DAMAGING WIND.
THIS REGIME ALSO EXTENDS SWWD ACROSS PORTIONS CENTRAL/NRN MS...AND
SEWD ALONG OLD DIFFERENTIAL HEATING BOUNDARY OVER E-CENTRAL AL AND
WRN GA.  STG-SVR TSTMS OVER NERN AL/NWRN GA AND SERN TN PORTIONS WW
725 SHOULD MOVE INTO NWRN PORTIONS WW 728.

FORMERLY CLOUD-ENSHROUDED AIR MASS E OF THAT BOUNDARY HAS CLEARED
THEN HEATED SUFFICIENTLY THAT LITTLE OR NO CINH REMAINS....BASED ON
MODIFIED RAOBS AND RUC SOUNDINGS THAT ALSO SHOW MLCAPES APCHG 3000
J/KG IN MANY AREAS.  MEANWHILE...OLDER/OUTFLOW BOUNDARY WAS ANALYZED
AT 1930Z FROM DEKALB COUNTY TN SWWD NEAR MSL THEN WSWWD ACROSS NRN
MS...DRIFTING SEWD.  GREATEST CONVECTIVE CONCENTRATIONS SHOULD
REMAIN ALONG AND SW OF OUTFLOW BOUNDARY WHERE  INSTABILITY AND LOW
LEVEL CONVERGENCE EACH WILL REMAIN MAXIMIZED FOR SEVERAL MORE HOURS.
 FROM ABOUT 22Z ONWARD...INCREASING COVERAGE OF RELATIVELY FRESH
OUTFLOW AIR WILL BEGIN TO DIMINISH SVR POTENTIAL FROM INSIDE OUT --
I.E. FROM SERN TN/NRN AL CORRIDOR RADIALLY OUTWARD -- DUE TO
STABILIZATION OF BOUNDARY LAYER.

..EDWARDS.. 07/22/2008

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

ATTN...WFO...RAH...RNK...CAE...GSP...MRX...FFC...TAE...OHX...BMX...HUN...MEG...JAN...

34308994 34428878 35138722 36548441 35648356 36168244
36418157 35347950 32978322 32048295 31648357 32708679
32728966

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