[BNAWX] Severe Storm Outlook Narrative

[EMWIN Server]

ACUS11 KWNS 082025
SWOMCD
SPC MCD 082024
TNZ000-MOZ000-ARZ000-082130-

MESOSCALE DISCUSSION 0764
NWS STORM PREDICTION CENTER NORMAN OK
0324 PM CDT FRI MAY 08 2009

AREAS AFFECTED...CNTRL AND NERN AR THROUGH WRN TN

CONCERNING...SEVERE THUNDERSTORM WATCH 267...

VALID 082024Z - 082130Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 267
CONTINUES.

NEW WW WILL BE NEEDED TO REPLACE WW 267 WHICH IS SCHEDULED TO EXPIRE
AT 21Z. A TORNADO WATCH WILL BE ISSUED SOON FOR A PORTION OF MIDDLE
AND WRN TN TO REPLACE A PORTION OF SEVERE THUNDERSTORM WATCH 268.

TRAILING END OF CONVECTIVE OUTFLOW BOUNDARY EXTENDS ACROSS NWRN TN
THROUGH NRN AR. OVERALL TREND HAS BEEN FOR STORMS TO UNDERGO A
TEMPORARY WEAKENING DURING THE LAST COUPLE HOURS...BUT A COUPLE OF
STRONG STORMS REMAIN ACROSS NERN AR. THE BOUNDARY LAYER SOUTH OF THE
OUTFLOW BOUNDARY IS MODERATELY UNSTABLE...BUT STILL APPEARS CAPPED
TO SURFACE BASED STORMS. HOWEVER...THE 18Z RAOB FROM LITTLE ROCK
INDICATED THE ORIGINAL CAPPING LAYER HAS UNDERGONE LIFTING AND
MOISTENING. TENDENCY WILL BE FOR THE LOW LEVEL JET TO SHIFT NEWD
THROUGH THE TN AND OH VALLEY. CURRENT THINKING IS THAT ADDITIONAL
STORMS MAY DEVELOP FARTHER EAST THROUGH WRN INTO MIDDLE TN WHERE CAP
IS WEAKER AND SHEAR PROFILES ARE SUFFICIENT FOR SUPERCELLS AND
ISOLATED TORNADOES.

..DIAL.. 05/08/2009

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

ATTN...WFO...MRX...OHX...MEG...

LAT...LON   36139057 36088884 36588450 35458513 35328894 35469042
            36139057



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