Special Weather Statement, NWS Atlanta, GA

Area Forecast Discussion
National Weather Service Peachtree City GA
929 PM EDT Tue Jul 7 2020

.UPDATE...
Old frontal boundary remains situated across south central GA this
evening. A wave of low pressure continues to move east along the
boundary and and is currently across the low country of GA/SC.
Scattered showers and isolated thunderstorms should continue to
wind down overnight with the loss of heating, but a few showers
could linger well into the overnight hours. No major changes
needed, just made some tweaks to the hourly temp/dewpoint grids.

&&

.PREV DISCUSSION... /Issued 730 PM EDT Tue Jul 7 2020/

PREV DISCUSSION... /Issued 254 PM EDT Tue Jul 7 2020/

.Tuesday Afternoon Forecast Discussion...

SHORT TERM /Tonight through Wednesday Night/...

The tropical, mesoscale, low pressure system driving the current
weather pattern continues to meander around east central Georgia
with satellite imagery currently centering it around Greensboro,
GA. With PWAT values between 1.8-2.3 inches, this system has
brought an abnormally high amount of moisture to the region, with
vertical atmospheric profiles showing a nearly moist adiabatic
profile. A moist, profile in the low-to-mid levels of the
atmosphere combined with low mid-level lapse rates will make
severe thunderstorms difficult to develop this afternoon, but
widespread light showers and training lines of heavy showers and
storms should paint the forecast area this afternoon before fading
into tonight.

Tomorrow the surface low will move towards the Carolina coastlines
with winds shifting fully out of the west, but the airmass over the
forecast area will see little change with numerous showers and
storms expected once again, though most likely with a bit less
coverage than this afternoon.

Highs in the mid-80s tomorrow and near 70 tonight and tomorrow night
will be near-normal. Enjoy it while it lasts before the warm up
through the rest of the week.

Thiem

LONG TERM /Thursday through Tuesday/...

Thursday kicks off as the surface low finally makes it to the coast,
pulling with it the heavy rain that we started off the week with.
The flow on the backside of the low becomes NNE and our pops return
to chance to account for afternoon convection. A few isolated storms
could become severe as daytime heating creates plenty of
instability.

From Friday on, the pattern remains largely unchanged. A strong
upper level high pressure system over the SW United States will
continue to steer low pressure systems from out of the great lakes
through the SE. This nearly continuous upper level trough will keep
pops at chance through the rest of the forecast period.

Temperatures will remain in the upper 80s in northern Georgia and
lower 90s across south and central Georgia. Dewpoints will range
from the mid to lower 70s for most of the CWA. This combination of
heat and humidity will push heat indices over 100 for SE portions of
the CWA Friday through Sunday. A weak cold front moving through on
Monday and into Tuesday will help to moderate temperatures slightly,
but overall the heat will continue.

Vaughn

AVIATION...
00Z Update...
Widespread showers should be on the decrease after sunset.
Widespread IFR cigs are possible again overnight, with some
lifting to MVFR through the late morning. Winds should be on the
east side overnight, but should go over to the NW side during the
mid to late morning tomorrow. Shower timing/coverage on Wednesday
should be very similar to today.

//ATL Confidence...00Z Update...
Med confidence all elements.

NListemaa

&&

.PRELIMINARY POINT TEMPS/POPS...
Athens          70  86  70  89 /  50  70  40  50
Atlanta         71  85  70  87 /  50  70  50  50
Blairsville     65  80  65  82 /  50  70  40  50
Cartersville    70  86  69  89 /  50  60  40  50
Columbus        73  86  72  90 /  50  70  40  50
Gainesville     69  84  69  86 /  50  70  50  50
Macon           72  86  71  89 /  60  70  40  50
Rome            70  87  70  89 /  50  60  40  50
Peachtree City  71  85  69  88 /  50  70  40  50
Vidalia         74  87  73  89 /  60  80  40  50

&&

.FFC WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

SHORT TERM...NListemaa
LONG TERM....Vaughn
AVIATION...NListemaa

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