[BNAWX] Severe Storm Outlook Narrative

[EMWIN Server]

ACUS11 KWNS 260034
SWOMCD
SPC MCD 260034
KYZ000-INZ000-TNZ000-ILZ000-MSZ000-MOZ000-ARZ000-LAZ000-TXZ000-260230-

MESOSCALE DISCUSSION 0580
NWS STORM PREDICTION CENTER NORMAN OK
0734 PM CDT MON APR 25 2011

AREAS AFFECTED...PORTIONS AR...EXTREME SRN IL...NE TX...EXTREME SWRN
INDIANA...NWRN MS...SERN MO...NRN LA...WRN KY...WRN TN.

CONCERNING...TORNADO WATCH 205...206...

VALID 260034Z - 260230Z

THE SEVERE WEATHER THREAT FOR TORNADO WATCH 205...206...CONTINUES.

THREAT FOR SIGNIFICANT TORNADOES AND DAMAGING WIND CONTINUES ACROSS
WWS ALONG AND E OF PRIMARY CONVECTIVE COMPLEX THAT EXTENDS FROM NEAR
CGI THROUGH LIT-TXK CORRIDOR AND JUST N TYR AS OF 00Z.  ENVIRONMENT
WILL BECOME MORE FAVORABLE OVER AR/LA BORDER REGION EWD TO DELTA
REGION...FROM WRN TN SWD TO NEAR LA BORDER THROUGH REMAINDER
EVENING.

AS OF 00Z...TORNADIC SUPERCELLS WITH HISTORY OF DAMAGE OVER HOT
SPRINGS AREA...INCLUDING APPARENT DEBRIS SIGNATURE OVER SRN CONWAY
COUNTY...ARE PROCEEDING NEWD ACROSS CENTRAL AR...FOLLOWED BY
INCREASINGLY WELL-ORGANIZED BOW ECHO MOVING NEWD ABOUT 60 KT TOWARD
LIT METRO AND CAPABLE OF SIGNIFICANT-SVR WIND.  SUPERCELLS WILL BE
MOVING NEWD ABOUT 40 KT...REMAINING AHEAD OF BOW FOR ANOTHER 1-2
HOURS.  ALL THIS ACTIVITY WILL REMAIN WITHIN BAROCLINIC GRADIENT
FROM CENTRAL-NERN AR AND WILL REMAIN CAPABLE OF SIGNIFICANT
TORNADOES...WITH PROXIMITY 00Z LZK RAOB SHOWING 0-1 KM SRH APCHG 400
J/KG.  BLEND OF SUPERCELL AND BOW MODES IS POSSIBLE FARTHER S IN
CONVECTIVE COMPLEX...AS ACTIVITY MOVES FROM NE TX AND SWRN AR ACROSS
REMAINDER OF ARKLATEX REGION AND OVER SRN AR AND EXTREME NRN LA.
SERN MO/SRN IL ACTIVITY WILL MOVE INTO PROGRESSIVELY MORE STABLE
AIR...BUT REMAINS CAPABLE OD DAMAGING WIND.

STRONG PRESSURE FALLS ARE ANALYZED OVER SERN AR...MAINTAINING BACKED
SFC WINDS WITH 300-500 J/KG OF 0-1 KM SRH.  AS LLJ STRENGTHENS
DURING NEXT 2-3 HOURS...LOW-LEVEL HODOGRAPHS SHOULD ENLARGE FURTHER
ACROSS SRN AR...NRN LA EWD TOWARD NWRN MS AND WRN TN. RELATED WAA
AND MOISTURE TRANSPORT MAY DISPERSE RELATIVE DRY POCKETS NOW
ANALYZED AT SFC OVER PORTIONS NRN LA AND WRN MS...LEADING TO MORE
UNIFORM FIELD OF MLCAPE RANGING FROM 500 J/KG OVER ERN AR TO 2000
J/KG IN NRN LA...AMIDST 60-70 KT EFFECTIVE SHEAR MAGNITUDES.

..EDWARDS.. 04/26/2011

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

ATTN...WFO...OHX...PAH...MEG...JAN...LSX...LZK...SHV...FWD...

LAT...LON   32999541 33519381 34689281 35439224 35779089 36859029
            38028972 38138772 37588747 33978933 33119109 32469274
            32999541


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