Severe Storm Outlook Narrative (AC)
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000
ACUS11 KWNS 271730
SWOMCD
SPC MCD 271730
SCZ000-GAZ000-ALZ000-271900-

Mesoscale Discussion 0572
NWS Storm Prediction Center Norman OK
1230 PM CDT Thu Apr 27 2017

Areas affected...Far southeast AL...Central GA...Far western SC

Concerning...Severe potential...Watch possible

Valid 271730Z - 271900Z

Probability of Watch Issuance...60 percent

SUMMARY...Radar trends are being monitored for a potential watch
across portions of central GA. Primary severe threat is expected to
be damaging wind gusts although hail and brief tornadoes are also
possible.

DISCUSSION...Thunderstorms within the ongoing line of storms
extending from far west-central GA into southeast AL have continued
to show sporadic intensification/updraft rotation with several
storms currently exhibiting low-level rotation. Diurnal heating
continues to destabilize the downstream environment with
temperatures across central GA now into the low to mid 80s. Recent
mesoanalysis suggests these surface temperatures amidst dewpoints
mid 60s are supportive of MLCAPE on the order of 1500 J/kg and
little to no CIN. Recent WAA development out ahead of the line
across  west-central GA further supports the mesoanalysis estimation
of little to no CIN. Given the supportive downstream environment and
recent radar trends, a transition to more of a linear cluster
appears probable with a resultant threat for damaging wind gusts
across much of central GA. However, this transition has not
completely occurred yet and most of the current radar signatures
across far southeast AL and far west-central GA are indicative of a
few semi-discrete supercells embedded within the line. Trends with
much of this development thus far is for transient rotation
supportive of brief tornadoes and gusty winds.

..Mosier/Hart.. 04/27/2017

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

ATTN...WFO...CHS...CAE...FFC...TAE...BMX...MOB...

LAT...LON   31438621 32968489 33488368 33948224 33628137 32628187
            32098286 31438621




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