Special Weather Statement, NWS Atlanta, GA

Area Forecast Discussion
National Weather Service Peachtree City GA
1158 AM EDT Tue Jul 19 2022

.UPDATE...

Another wave of convective activity has been pushing through
north Georgia this morning where training showers and
thunderstorms over some of our northwestern counties have become a
bit of a concern. Estimates are showing that 2.0-3.5" have fallen
over the last 24 hours and soils are starting to become
sufficiently moist. PWATs on this morning's sounding were 1.91"
and the vertical profile is quite moist (low and mid level
relative humidities are >70%). Will be keeping an eye on the area
as the situation evolves regarding any flash flooding concerns as
more precipitation is anticipated to impact the area over the next
few hours. Additionally, SPC has upgraded much of the forecast
area to a Marginal Risk for the Day 1 Convective Outlook. We've
already seen a few thunderstorms this morning producing gusty
winds and frequent lightning. Diurnally driven convective
activity is anticipated to continue this afternoon, especially in
areas that are able to recover and destabilize under sparse cloud
coverage. Have made adjustments to the grids this morning to
reflect recent trends. The forecast otherwise remains generally on
track.

.PREV DISCUSSION... /Issued 743 AM EDT Tue Jul 19 2022/

..Updated for 12Z Aviation Discussion...

PREV DISCUSSION... /Issued 336 AM EDT Tue Jul 19 2022/

SHORT TERM /Today through Wednesday/...
Current mosaic radar loop shows showers and isolated thunderstorms
moving east across North and central AL and GA. These storms are
associated with a shortwave moving across the region and they look
like they will hold together for the next few hours. Expecting
another round of convection this afternoon, but it could be hampered
by cloud coverage and the storms working the area over this morning.
With the heating of the day and diurnally driven instability, storms
will ramp up again across much of the forecast area. There will also
be a few weak boundaries laying around the area from the wake of
this mornings storms so they should act as a catalyst and help spark
some redevelopment this afternoon. Capes expected to get up into the
1500-2000 J/kg range today and Wednesday so we will have enough
support for the development of thunderstorms. Not expecting any
widespread severe activity at this time which also goes well with
the general risk areas SPC has across GA Today and Wed. High
temperatures in the mid 80s to low 90s will be close to seasonal
norms today but temps rise into the low 90s to mid 90s Wed.

01

LONG TERM /Wednesday Night through Monday/...
NW flow aloft during the middle of the week, with a longwave trough
just offshore. 500mb shear axis currently overhead has shifted to
the south across far south GA/FL panhandle. By late Thursday/early
Friday, a high pressure ridge centered across the four corners
region of the country will begin to build eastward across the area.
This ridging will remain in place through early next week.

At the surface, a lee trough should remain in place across the CWA
for most of the period. A weak frontal boundary is expected to
approach northern portions of the state late Thursday into early
Friday. The front shouldn't make much southward progress and should
become stationary across the TN valley later Friday into Saturday,
before becoming diffuse. High pressure at the surface will build in
for early next week.

No major changes needed for the forecast period. With high pressure
building aloft and at the surface for early next week, a warming
trend is likely.

NListemaa

AVIATION...
12Z Update...
Current radar loop shows showers exiting the ATL area with a
second round of storms moving into NW GA. If this second wave
holds together it should move into the ATL area by 14z so have
introduced another round of precip into the TAFs. Still thinking a
third round of storms will develop this afternoon so all in all
it looks to be a fairly stormy day. Ceilings should be mainly VFR
with some MVFR in and around the convective activity.

//ATL Confidence...12Z Update...
Confidence medium to high on all elements.

01

&&

.PRELIMINARY POINT TEMPS/POPS...
Athens          71  91  73  92 /  40  50  30  50
Atlanta         73  91  75  91 /  50  50  30  50
Blairsville     66  85  68  87 /  40  50  40  50
Cartersville    72  91  73  92 /  50  40  30  50
Columbus        74  92  76  93 /  40  40  20  50
Gainesville     71  89  73  90 /  40  50  30  50
Macon           73  93  75  94 /  40  50  20  50
Rome            73  94  75  95 /  50  40  40  50
Peachtree City  72  91  73  91 /  50  40  30  50
Vidalia         74  91  75  93 /  40  50  10  50

&&

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

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

Hazardous Weather Outlook
National Weather Service Peachtree City GA
1111 AM EDT Tue Jul 19 2022

GAZ001>009-011>016-019>025-027-030>039-041>062-066>076-078>086-
089>098-102>113-201515-
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-
1111 AM EDT Tue Jul 19 2022

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

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

Scattered to numerous thunderstorms are possible across portions
of north and central Georgia today. A few storms could become
strong to severe, capable of producing gusty winds, heavy rain,
and frequent lightning as the main threats. Locally heavy
rainfall associated with stronger storms may lead to isolated
flooding concerns.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday...

Scattered thunderstorms are possible each afternoon and evening
across much of the forecast area this week and into the weekend.
Some storms could be strong to severe with strong to damaging wind
gusts, frequent lightning, and heavy rainfall as the main
threats.

.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.

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Special Weather Statement
National Weather Service Peachtree City GA
1052 AM EDT Tue Jul 19 2022

GAZ011-019-030-191530-
Chattooga GA-Polk GA-Floyd GA-
1052 AM EDT Tue Jul 19 2022

...A strong thunderstorm will impact portions of southern Floyd, Polk
and southwestern Chattooga Counties through 1130 AM EDT...

At 1052 AM EDT, a strong thunderstorm was over Cave Spring, or 8
miles northeast of Forney, moving east at 30 mph.

HAZARD...Heavy rain.

SOURCE...Radar indicated.

IMPACT...Heavy rain may cause temporary street flooding especially
         in poor drainage areas.

Locations impacted include...
Rome, Cedartown, Rockmart, Aragon, Cave Spring, Fish Creek, Lindale,
Antioch, Van Wert, Seney, Coosa, Esom Hill and Etna.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Motorists should slow down and be prepared for possible loss of
control due to hydroplaning.

&&

LAT...LON 3435 8547 3424 8503 3421 8503 3421 8505
      3408 8505 3408 8503 3395 8504 3395 8505
      3391 8505 3390 8512 3395 8539
TIME...MOT...LOC 1452Z 290DEG 26KT 3415 8534

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...<30 MPH

Special Weather Statement
National Weather Service Peachtree City GA
1136 AM EDT Tue Jul 19 2022

GAZ019-020-030-031-191600-
Polk GA-Bartow GA-Paulding GA-Floyd GA-
1136 AM EDT Tue Jul 19 2022

...A strong thunderstorm will impact portions of northern Paulding,
southern Floyd, Polk and southwestern Bartow Counties through NOON
EDT...

At 1136 AM EDT, a strong thunderstorm was over Seney, or 9 miles
northeast of Cedartown, moving east at 35 mph.

HAZARD...Up to 40 mph wind, frequent cloud to ground lightning and
         heavy rain.

SOURCE...Radar indicated.

IMPACT...Expect minor damage to tree limbs and blowing around of
         light, unsecured objects. Heavy rain may cause temporary
         street flooding especially in poor drainage areas.

Locations impacted include...
Rome, Cartersville, Dallas, Cedartown, Rockmart, Euharlee, Hiram,
Emerson, Aragon, Cave Spring, Braswell, Taylorsville, Fish Creek,
Burnt Hickory Ridge, Lindale, Van Wert, Seney, Cross Roads,
Stilesboro and New Hope.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People outdoors should seek shelter immediately. If you can hear
thunder, you are close enough to be struck by lightning. Motorists
should slow down and be prepared for possible loss of control due to
hydroplaning.

&&

LAT...LON 3417 8474 3388 8474 3403 8541 3428 8546
TIME...MOT...LOC 1536Z 287DEG 30KT 3407 8511

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

Special Weather Statement
National Weather Service Peachtree City GA
1201 PM EDT Tue Jul 19 2022

GAZ019>021-030>032-191630-
Polk GA-Cobb GA-Cherokee GA-Bartow GA-Paulding GA-Floyd GA-
1201 PM EDT Tue Jul 19 2022

...A strong thunderstorm will impact portions of northeastern
Paulding, southwestern Cherokee, Cobb, southeastern Floyd,
northeastern Polk and Bartow Counties through 1230 PM EDT...

At 1201 PM EDT, a strong thunderstorm was near Seney, or 9 miles
northeast of Cedartown, moving east at 20 mph.

HAZARD...Up to 40 mph wind, frequent cloud to ground lightning and
         heavy rain.

SOURCE...Radar indicated.

IMPACT...Expect minor damage to tree limbs and blowing around of
         light, unsecured objects. Heavy rain may cause temporary
         street flooding especially in poor drainage areas.

Locations impacted include...
Marietta, Rome, Canton, Cartersville, Dallas, Cedartown, Smyrna,
Kennesaw, Woodstock, Acworth, Holly Springs, Rockmart, Euharlee,
Hiram, Emerson, Aragon, White, Kingston, Braswell and Taylorsville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People outdoors should seek shelter immediately. If you can hear
thunder, you are close enough to be struck by lightning. Motorists
should slow down and be prepared for possible loss of control due to
hydroplaning.

&&

LAT...LON 3402 8528 3432 8521 3425 8439 3384 8447
TIME...MOT...LOC 1601Z 281DEG 18KT 3412 8516

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

Special Weather Statement
National Weather Service Peachtree City GA
1216 PM EDT Tue Jul 19 2022

GAZ093-104>106-191645-
Macon GA-Crisp GA-Dooly GA-Sumter GA-
1216 PM EDT Tue Jul 19 2022

...A strong thunderstorm will impact portions of south central Macon,
western Dooly, eastern Sumter and northwestern Crisp Counties through
1245 PM EDT...

At 1216 PM EDT, a strong thunderstorm was near Huntington, or near
Americus, moving east at 10 mph.

HAZARD...40 to 50 mph wind, frequent cloud to ground lightning and
         heavy rain.

SOURCE...Radar indicated.

IMPACT...Expect minor damage to tree limbs and blowing around of
         light, unsecured objects. Heavy rain may cause temporary
         street flooding especially in poor drainage areas.

Locations impacted include...
Americus, Byromville, Leslie, Lilly, De Soto, Dooling, Lamar, New
Era, Flint River Wma, Huntington, Pennington, Drayton and Methvins.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People outdoors should seek shelter immediately. If you can hear
thunder, you are close enough to be struck by lightning. Motorists
should slow down and be prepared for possible loss of control due to
hydroplaning.

&&

LAT...LON 3194 8418 3209 8425 3228 8399 3216 8381
      3200 8385
TIME...MOT...LOC 1616Z 251DEG 10KT 3205 8414

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH

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