[BNAWX] Severe Storm Outlook Narrative

[EMWIN Server]

ACUS11 KWNS 281808
SWOMCD
SPC MCD 281807
GAZ000-ALZ000-TNZ000-MSZ000-282000-

Mesoscale Discussion 0921
NWS Storm Prediction Center Norman OK
0107 PM CDT Thu Jun 28 2018

Areas affected...Southern Tennessee...Alabama...Western Georgia

Concerning...Severe Thunderstorm Watch 231...

Valid 281807Z - 282000Z

The severe weather threat for Severe Thunderstorm Watch 231
continues.

SUMMARY...Wind damage and hail will be possible across parts of
middle Tennessee, Alabama and western Georgia over the next few
hours. Weather watch issuance may be needed to the south of the
current watch later this afternoon.

DISCUSSION...The latest surface analysis shows a very moist airmass
in place across much of the Southeast with surface dewpoints in the
mid to upper 70s F. As a result, moderate instability is analyzed by
the RAP across much of southwestern Tennessee, Alabama and
southwestern Georgia with MLCAPE values estimating in the 2000 to
3500 J/kg range. In addition, 0-3 km lapse rates have increased
markedly over the last few hours with the RAP showing the steepest
lapse rates in central Alabama. This would be the most likely area
for a continued severe threat later this afternoon. Wind damage will
still be possible as the linear MCS moves southward across the
southern and western part of WW 231. As the line approaches the area
of maximized low-level lapse rates in Alabama, a new weather watch
or watch extension will need to be considered.

..Broyles/Hart.. 06/28/2018

...Please see www.spc.noaa.gov for graphic product...

ATTN...WFO...FFC...TAE...OHX...BMX...HUN...MOB...MEG...

LAT...LON   35428809 35608759 35428683 34928610 34588561 33948521
            33058451 32558368 32008356 31758386 31658534 31578682
            32268778 32978803 34798834 35428809
This weather bulletin was brought to you by:
http://www.nashvilleweather.net

Follow us on Facebook at:
http://www.facebook.com/nashvilleweather

Follow us on Twitter at:
http://twitter.com/nashwxnet