Special Weather Statement, NWS Atlanta, GA

Area Forecast Discussion
National Weather Service Peachtree City GA
317 PM EDT Mon Jul 3 2023

...Afternoon Area Forecast Discussion...

.SHORT TERM...
(This evening through Tuesday)
Issued at 316 PM EDT Mon Jul 3 2023

Weak boundary will drop south this evening and settle across
northern GA through the remainder of the short term period of the
forecast. The boundary will serve to focus any convective activity,
especially tomorrow.

An area of showers and a few thunderstorms across far NW GA have
mostly dissipated early this afternoon. However, additional storms
are forming across northern AL and they will creep eastward through
the afternoon/evening aided by a shortwave moving east within the
mid level flow. Additional showers and thunderstorms have developed
between ATL and CSG...and these storms will continue to spread
eastward through the afternoon and evening. Very typical summertime
pattern in place, with good surface instability and PWATs of 1.5"+
across the area. Mid level lapse rates are fairly marginal. A few
strong storms will be likely, with an isolated severe storm
possible. The primary hazards would be gusty winds, frequent
lightning and locally heavy rainfall.

Coverage tomorrow should be higher, especially if the weak boundary
settles just north of the ATL metro. The atmos will be very similar,
but the convergence along the boundary will provide a bit more lift
for storms. Again, a few strong storms will be likely with the
potential for isolated severe storms.

The Heat Advisory will continue through 8PM this evening for
portions of the SE CWA. Think coverage of storms north and west of a
line from Athens to Columbus will help limit the Heat Indices for
tomorrow afternoon. However, along and southeast of the line, Heat
Index values are currently forecast to between 100-103. If temps or
dewpoints are higher than currently forecast, a Heat Advisory may be
needed.

NListemaa

&&

.LONG TERM...
(Wednesday morning through next Sunday)
Issued at 316 PM EDT Mon Jul 3 2023

Key Messages:

 - Diurnally driven Thunderstorms possible most days.

 - Heat and humidity will continue through the week, though need
   for any heat advisories will need to be evaluated on a day by
   day basis. Hottest areas will be in central Georgia.

The moist and active pattern will remain in place through this
forecast period. Keeping increased rain chances in the forecast as it
appears moisture will remain in place and the CWA will remain on the
periphery of the subtropical ridge, meaning less subsidence from the
high pressure. The good news in this is the copious
afternoon/evening thunderstorms will continue to limit our ability
to warm up during the afternoon and evening. Combined with the core
of the high remaining further south, this should limit heat concerns
a bit. Still, heat indices will regularly approach 100 in many
areas, especially central GA, each day. While this isn't quite heat
advisory criteria, repeated exposure to these very high indices can
have impacts that build over time, so take care if exerting yourself.

Trough dives into the midwest by Friday into Saturday. This will
drive another continental airmass towards the CWA, the boundary of
which will become increasingly diffuse. This may provide another
focus for convection to fire from, but how far it tracks has some
variability within the ensembles. Leaning towards it not making it
quite here, given the time of year, which would leave us within the
moist, warm airmass and keep the diurnal storms in place.

Lusk/01

&&

.AVIATION...
(18Z TAFS)
Issued at 112 PM EDT Mon Jul 3 2023

Scattered afternoon/evening showers and thunderstorms possible
today and tomorrow. Hi-res models are not showing as much coverage
for today vs tomorrow. Winds will remain on the west side and
potentially go light and variable overnight. Some sct MVFR
possible towards 12Z Tue.

//ATL Confidence...18Z Update...
High confidence all elements.
NListemaa

&&

.PRELIMINARY POINT TEMPS/POPS...
Athens          72  91  72  91 /  30  40  40  60
Atlanta         73  90  73  88 /  30  40  40  70
Blairsville     65  84  65  85 /  30  30  30  70
Cartersville    70  90  71  90 /  30  40  40  70
Columbus        74  93  74  91 /  30  30  30  70
Gainesville     72  89  71  89 /  30  40  40  60
Macon           74  93  74  93 /  30  40  30  70
Rome            70  91  71  90 /  30  40  30  70
Peachtree City  71  91  71  89 /  30  40  40  70
Vidalia         75  96  76  94 /  30  30  30  70

&&

.FFC WATCHES/WARNINGS/ADVISORIES...
Heat Advisory until 8 PM EDT this evening for GAZ074>076-083>086-
096>098-109>113.

&&

SHORT TERM...NListemaa
LONG TERM....01
AVIATION...NListemaa

Hazardous Weather Outlook
National Weather Service Peachtree City GA
1047 AM EDT Mon Jul 3 2023

GAZ001>009-011>016-019>025-027-030>039-041>062-066>076-078>086-
089>098-102>113-041500-
Baldwin-Banks-Barrow-Bartow-Bibb-Bleckley-Butts-Carroll-Catoosa-
Chattahoochee-Chattooga-Cherokee-Clarke-Clayton-Cobb-Coweta-
Crawford-Crisp-Dade-Dawson-DeKalb-Dodge-Dooly-Douglas-Emanuel-
Fannin-Fayette-Floyd-Forsyth-Gilmer-Glascock-Gordon-Greene-
Gwinnett-Hall-Hancock-Haralson-Harris-Heard-Henry-Houston-Jackson-
Jasper-Jefferson-Johnson-Jones-Lamar-Laurens-Lumpkin-Macon-
Madison-Marion-Meriwether-Monroe-Montgomery-Morgan-Murray-
Muscogee-Newton-North Fulton-Oconee-Oglethorpe-Paulding-Peach-
Pickens-Pike-Polk-Pulaski-Putnam-Rockdale-Schley-South Fulton-
Spalding-Stewart-Sumter-Talbot-Taliaferro-Taylor-Telfair-Toombs-
Towns-Treutlen-Troup-Twiggs-Union-Upson-Walker-Walton-Warren-
Washington-Webster-Wheeler-White-Whitfield-Wilcox-Wilkes-
Wilkinson-
1047 AM EDT Mon Jul 3 2023

This Hazardous Weather Outlook is for portions of North and Central Georgia.

.DAY ONE...This Afternoon and Tonight...

Scattered thunderstorms will occur across the region this
afternoon and evening. A couple of storms could be severe with
damaging downburst winds and frequent lightning being the main
threats. The greatest risk of severe weather will occur between 3
PM and 8 PM.

Hot and humid conditions are expected across southeast Georgia
today. Heat index values should top out in the 103 to 108 range. A
Heat Advisory has been issued for the region from noon to 8 PM
today.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday...

Thunderstorms will be possible each afternoon and evening through
Sunday. There is a marginal risk (level 1 of 5) of severe weather
on Tuesday and Wednesday. The primary severe hazard on both days
should be damaging downburst winds. Be prepared for potential
disruptions to your 4th of July activities.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not requested but spotters are encouraged
to submit reports of severe weather through the web by going to
weather.gov/atlanta.  Please relay any information about observed
severe weather to the NWS while following all local, state, and
CDC guidelines.

Special Weather Statement
National Weather Service Peachtree City GA
416 PM EDT Mon Jul 3 2023

GAZ069>071-032045-
Lamar GA-Monroe GA-Upson GA-
416 PM EDT Mon Jul 3 2023

...A strong thunderstorm will impact portions of southwestern Monroe,
northeastern Upson and southeastern Lamar Counties through 445 PM
EDT...

At 416 PM EDT, a strong thunderstorm was near Redbone, or 8 miles
southeast of Barnesville, moving east at 15 mph.

HAZARD...Winds up to 40 mph and up to penny sized hail.

SOURCE...Radar indicated.

IMPACT...Expect minor damage to tree limbs and blowing around of
         light, unsecured objects.

Locations impacted include...
Yatesville, Brent and Russellville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People outdoors should seek shelter immediately.

&&

LAT...LON 3286 8398 3285 8398 3289 8416 3298 8416
      3301 8388 3285 8389 3285 8396
TIME...MOT...LOC 2016Z 273DEG 14KT 3294 8408

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...40 MPH

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