Mesoscale Discussion 0575
NWS Storm Prediction Center Norman OK
0323 PM CDT Thu Apr 27 2017
Areas affected...Central GA...Far southeast AL
Concerning...Tornado Watch 169...
Valid 272023Z - 272200Z
The severe weather threat for Tornado Watch 169 continues.
SUMMARY...Severe threat across Watch 169 persists but is expected to
continue waning with time. A few isolated strong to severe storms
are possible across southeast AL.
DISCUSSION...Intensity of the thunderstorm cluster stretching from
MCN to MLJ in central GA has diminished over the past hour or so,
likely a result of encountering an airmass characterized by less
low-level moisture, cooler surface temperatures, and less overall
instability. In addition to the less-favorable thermodynamics,
low/mid level flow is gradually decreasing as well, leading to a
reduction in the low-level and bulk shear. Overall, the airmass is
becoming increasingly more hostile to robust convection and the
severe threat, while still non-zero, is waning.
Outside of the watch across southeast AL, a few stronger storms have
developed where better low-level moisture exists and the overall
instability is better. Some transient updraft rotation is possible
across this area with a resulting isolated severe threat.
..Mosier.. 04/27/2017
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...CHS...CAE...FFC...TAE...BMX...
LAT...LON 33588409 33938318 33878167 32188170 31088561 32668535
33588409
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