[BNAWX] Severe Storm Outlook Narrative

[EMWIN Server]

ACUS11 KWNS 201640
SWOMCD
SPC MCD 201640
SCZ000-NCZ000-GAZ000-TNZ000-ALZ000-201845-

MESOSCALE DISCUSSION 0904
NWS STORM PREDICTION CENTER NORMAN OK
1140 AM CDT SAT MAY 20 2006

AREAS AFFECTED...MIDDLE AND ERN TN...NERN AL...NRN GA...WRN NC/SC

CONCERNING...SEVERE THUNDERSTORM POTENTIAL

VALID 201640Z - 201845Z

PORTIONS OF THE TN VALLEY EAST TO THE SRN APPALACHIANS ARE BEING
MONITORED FOR POSSIBLE WATCH IN THE NEXT HOUR OR SO.

LATEST DIAGNOSTIC DATA WAS INDICATING BUILDING INSTABILITY ALONG AND
SOUTH OF QUASI-STATIONARY FRONT SITUATED FROM TN SEWD ACROSS THE SRN
APPALACHIANS. MEANWHILE...A CLUSTER OF WEAK TSTMS... POSSIBLY
ASSOCIATED WITH A WEAK LOW/MID LEVEL IMPULSE...WAS SPREADING SEWD ON
THE COOL SIDE OF THE BOUNDARY. ANOTHER HOUR OR TWO OF HEATING ACROSS
THE WARM SECTOR SHOULD EFFECTIVELY OVERCOME CONVECTIVE INHIBITION
AND POSSIBLY FOSTER ADDITIONAL TSTM DEVELOPMENT NEAR THE FRONT AND
OVER THE WARM SECTOR. WHILE MORE ROBUST FORCING REMAINS MARGINAL
ACROSS THE REGION...ANY STORM THAT CAN FORM WILL DEVELOP WITHIN A
MODESTLY SHEARED ENVIRONMENT WHERE WEAK LOW LEVEL SWLY FLOW WILL BE
TOPPED BY 40-50KT WNWLY FLOW. HEATED AND WELL MIXED BOUNDARY LAYER
WILL ENHANCE DOWNDRAFT POTENTIAL WHILE EFFECTIVE SHEAR SHOULD
SUSTAIN STORMS AND PROMOTE EVOLUTION INTO ORGANIZED CELLS/CLUSTERS
WITH SEVERE HAIL AND DAMAGING WIND POTENTIAL INCREASING.

..CARBIN.. 05/20/2006

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

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

36188386 35768298 35378258 34968234 34538232 34118271
33868331 33518436 33758492 34458642 34748706 34908724
35438773 36148765 36288514



This weather bulletin was brought to you by:
www.nashvilleweather.net