[BNAWX] Severe Storm Outlook Narrative

[Nashville EMWIN]

ACUS11 KWNS 142044
SWOMCD
SPC MCD 142044
TNZ000-NCZ000-GAZ000-ALZ000-MSZ000-MOZ000-ARZ000-142215-

MESOSCALE DISCUSSION 1670
NWS STORM PREDICTION CENTER NORMAN OK
0344 PM CDT WED JUL 14 2004

AREAS AFFECTED...SRN TN/NRN AL/NRN MS/NWRN GA/NERN AR

CONCERNING...SEVERE THUNDERSTORM WATCH 632...

VALID 142044Z - 142215Z

...MAIN THREAT FROM STORMS WILL BE FROM LARGE HAIL BUT A WIND THREAT
IS DEVELOPING...

CLUSTER OF SUPERCELLS CONTINUES TO MOVE SEWD AROUND 30-35 KT INTO
VERY UNSTABLE AIRMASS WITH MLCAPE VALUES AROUND 3500 J/KG. MOST OF
THE RECENT SEVERE REPORTS HAVE BEEN LARGE HAIL...BUT A WIND THREAT
COULD DEVELOP WITH TIME. IMPRESSIVE SFC PRESSURE FALLS OF 3-4MB/2HR
ARE NOTED IN NRN AL...WHICH SHOULD ALLOW STORMS TO DEVELOP SWD.
RECENT VWP DATA FROM AREA RADARS SHOWS AROUND 25-30 KT OF DEEP LAYER
SHEAR WHICH IS SUPPORTING THE SUPERCELL ENVIRONMENT. A DAMAGING WIND
THREAT SHOULD DEVELOP WITH TIME AS DEEPENING COLD POOL SPREADS INTO
AIRMASS WITH RELATIVELY STEEP LOW LEVEL LAPSE RATES.

ADDITIONAL WW HAS ALREADY BEEN ISSUED ACROSS PORTIONS OF AL/GA/SC.

..TAYLOR.. 07/14/2004

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

ATTN...WFO...MRX...FFC...OHX...BMX...HUN...MEG...

34148422 34739099 36419091 35888417

WWWW
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