[BNAWX] Severe Storm Outlook Narrative

EMWIN Server emwin at nashvilleweather.net
Sun Sep 25 22:15:16 CDT 2005


ACUS11 KWNS 260314
SWOMCD
SPC MCD 260314
ALZ000-GAZ000-TNZ000-MSZ000-260445-

MESOSCALE DISCUSSION 2283
NWS STORM PREDICTION CENTER NORMAN OK
1014 PM CDT SUN SEP 25 2005

AREAS AFFECTED...ERN MS THROUGH CNTRL AND NRN AL

CONCERNING...TORNADO WATCH 821...

VALID 260314Z - 260445Z

THE THREAT FOR ISOLATED TORNADOES AND ISOLATED DAMAGING WIND GUSTS
IS EXPECTED TO PERSIST ANOTHER FEW HOURS ALONG EWD MOVING SQUALL
LINE...MAINLY FROM SERN MS NEWD THROUGH CNTRL AND NRN AL.

LATE THIS EVENING A SQUALL LINE WITH EMBEDDED SUPERCELLS AND SMALL
SCALE BOW ECHOES EXTENDS FROM NRN AL SWWD THROUGH W CNTRL AL AND
INTO SERN MS. THE LINE CONTINUES SLOWLY EWD AT AROUND 20 KT AND SOME
BACKBUILDING CONTINUES TO BE OBSERVED OVER SERN MS. THE PRIMARY
LIMITING FACTOR CONTINUES TO BE MARGINAL INSTABILITY WITH MUCAPE AOB
500 J/KG. HOWEVER...THE LINE REMAINS EMBEDDED WITHIN VERY STRONG LOW
LEVEL VERTICAL SHEAR/HELICITY ALONG A 50+ KT LOW LEVEL JET...
FAVORABLE FOR LOW LEVEL MESOCYCLONE FORMATION. LIGHTNING CONTINUES
TO BE OBSERVED WITHIN THE STRONGER CELLS ON SRN END OF THE LINE AND
UPDRAFTS MAY BE ENHANCED WITHIN STORMS THAT DEVELOP LOW-MID LEVEL
MESOCYCLONES DESPITE THE LIMITED BUOYANCY.

..DIAL.. 09/26/2005

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

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

33128576 32328632 31848708 31638808 31658981 32399009
33418900 34328825 35578739 35888675 35648585 34628554

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