Special Weather Statement, NWS Atlanta, GA

Area Forecast Discussion
National Weather Service Peachtree City GA
733 PM EDT Mon Jul 12 2021

...00Z Aviation Forecast Discussion...

.PREV DISCUSSION... /Issued 334 PM EDT Mon Jul 12 2021/

SHORT TERM /Tonight through Tuesday Night/...

As the short term period begins, an upper level low remains stalled
over the Midwest, blocked by the Bermuda High positioned off the mid-
Atlantic coast. Ahead of the upper low, southwesterly flow aloft
remains over the region. Meanwhile, southerly flow has set up at the
low levels on the backside of the Bermuda High. As the high remains
in place and the upper low opens and slowly lifts northeast towards
the Great Lakes overnight and Tuesday, this setup will persist and
allow for the continued advection of moisture from the Gulf of
Mexico over north and central Georgia. Dewpoints will remain in the
low to mid 70s through the period, along with precipitable water
values between 1.7-2.0 inches.

Scattered to numerous showers and thunderstorms are ongoing across
portions of west and north Georgia, primarily in association with a
disturbance traversing the upper level flow. Scattered thunderstorms
are also moving into central Georgia as the sea breeze pushes
further inland. At this time likely PoPs have been maintained for
west and north Georgia and chance PoPs for east and central Georgia.
Considering the high PWAT values, any convection will once again
produce heavy rainfall. In spite of faster boundary layer winds
leading to quicker storm motion, stronger storms training over the
same areas could produce localized flooding concerns. The
abundant atmospheric moisture and warm temperatures are also
contributing to SBCAPE values between 2000-3000 J/kg. With 10-15
kts of low-level wind shear and marginal mid-level lapse rates, an
organized threat for severe weather is not expected. However,
isolated storms may become strong to severe, capable of producing
gusty winds and frequent lightning.

It is possible to see another low stratus deck develop overnight and
persist through the early morning hours on Tuesday, especially in
areas that observe heavy rain this evening. After temperatures warm
and the stratus layer lifts and dissipates, diurnally driven
convection will develop. Scattered showers and thunderstorms are
thus expected across the forecast area once again tomorrow
afternoon. With deep moisture and increased cloud cover, there will
be a smaller diurnal spread of temperatures, with high temperatures
expected to be slightly cooler than average and overnight lows
slightly warmer than average.

King

LONG TERM /Wednesday through Monday/...

To avoid a redundant, monotonous, and repetitive monologue regarding
the long term forecast, the following discussion will be provided
through a series of haikus...

Extended forecast:
It's warm and wet in Georgia,
with no end in sight.

The forecast remains
unchanging, uneventful,
steady everyday.

Insignificant
synoptic influences
planned for the Southeast.

With no real focus,
expect a rinse and repeat
diurnal forecast.

Abundant moisture,
precipitable water
close to two inches.

High temps near ninety,
forty to sixty percent
chance of rain each day.

Scattered thunderstorms
forecast each afternoon with
gusts and heavy rain.

Most storms should be weak,
but isolated severe
cannot be ruled out.

Also possible
is isolated flooding
with persistent rains.

A mid-level ridge
will begin to be displaced
by a trough next week.

How far the trough sinks
is yet to be determined.
Only time will tell.

Thiem

&&

.AVIATION...
00Z Update...
A large area of shra/tsra continues north toward ATL/AHN sites
through 01-02z, diminishing thereafter. Current mainly VFR cigs
will likely lower toward MVFR and IFR after 09-10z, particularly
at ATL/AHN sites. Improvement toward VFR cigs is expected by
16-18z with sct shra/tsra coverage also increasing through the
afternoon. Winds will be largely SW at 4-6kts outside of tsra this
evening before becoming more vrb overnight and light. SW winds
are expected again on Tuesday at 4-8kts.

//ATL Confidence...00Z Update...
Medium confidence on morning cigs wind direction.
High confidence on other elements.

RW

&&

.PRELIMINARY POINT TEMPS/POPS...
Athens          69  87  69  89 /  40  60  40  50
Atlanta         70  86  70  88 /  60  60  40  50
Blairsville     64  78  64  82 /  50  70  60  60
Cartersville    69  85  68  88 /  50  60  50  50
Columbus        70  89  70  92 /  50  50  30  50
Gainesville     68  83  68  87 /  50  60  50  50
Macon           70  90  70  92 /  60  50  30  50
Rome            70  86  69  89 /  50  70  50  50
Peachtree City  69  86  68  89 /  60  60  40  50
Vidalia         71  90  71  90 /  40  40  30  50

&&

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

SHORT TERM...King
LONG TERM....Thiem
AVIATION...RW

Hazardous Weather Outlook
National Weather Service Peachtree City GA
210 PM EDT Mon Jul 12 2021

GAZ001>009-011>016-019>025-027-030>039-041>062-066>076-078>086-
089>098-102>113-131815-
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-
210 PM EDT Mon Jul 12 2021

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

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

Scattered thunderstorms capable of producing locally heavy
rainfall are expected this afternoon and evening across north
and central GA. Gusty winds and frequent lightning will also be
possible with any storms.

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

Scattered to numerous thunderstorms producing locally heavy
rainfall are expected across north and central Georgia through
Sunday, mainly in the afternoon and evening. A few storms may
become strong with gusty winds and frequent lightning.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected through tonight.

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
806 PM EDT MON JUL 12 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0630 PM     TSTM WND DMG     GAY                     33.09N  84.57W
07/12/2021                   MERIWETHER         GA   911 CALL CENTER

            TREE DOWN

&&

EVENT NUMBER FFC2100439

VSS

Special Weather Statement
National Weather Service Peachtree City GA
808 PM EDT Mon Jul 12 2021

GAZ025-027-034>038-045>048-130045-
Madison GA-Jackson GA-Walton GA-Rockdale GA-Barrow GA-DeKalb GA-
Gwinnett GA-Oglethorpe GA-Clarke GA-Oconee GA-Newton GA-
808 PM EDT Mon Jul 12 2021

...SIGNIFICANT WEATHER ADVISORY FOR MADISON...SOUTHERN JACKSON...
WALTON...NORTHEASTERN ROCKDALE...BARROW...DEKALB...GWINNETT...
NORTHWESTERN OGLETHORPE...CLARKE...NORTHERN OCONEE AND NORTHERN
NEWTON COUNTIES UNTIL 845 PM EDT...

At 806 PM EDT...strong thunderstorms extended from near Stone
Mountain to Walnut Grove and Arnoldsville, moving north at 35 mph.

  HAZARD...Winds up to 40 mph, pea sized hail, frequent lightning
           and heavy rain.

  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.

Some locations in the path of these storms include
Lawrenceville, Conyers, Winder, Monroe, Jefferson, Watkinsville,
Danielsville, Athens, Duluth, Sugar Hill, Snellville, Suwanee,
Buford, Lilburn, Loganville, Norcross, Clarkston, Braselton, Auburn
and Stone Mountain.

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 3423 8308 3417 8310 3413 8305 3394 8319
      3380 8349 3382 8351 3378 8353 3365 8382
      3371 8428 3400 8422 3399 8420 3403 8417
      3405 8410 3407 8412 3415 8408 3410 8387
      3412 8383 3409 8363 3427 8312
TIME...MOT...LOC 0006Z 200DEG 32KT 3388 8327 3369 8381 3374 8419

HAIL...0.25IN
WIND...40MPH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
810 PM EDT MON JUL 12 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0615 PM     TSTM WND DMG     1 NW WARM SPRINGS       32.90N  84.69W
07/12/2021                   MERIWETHER         GA   911 CALL CENTER

            TREE DOWN

&&

EVENT NUMBER FFC2100440

VSS

Special Weather Statement
National Weather Service Peachtree City GA
811 PM EDT Mon Jul 12 2021

GAZ074-076-085-086-097-130100-
Jefferson GA-Washington GA-Emanuel GA-Johnson GA-Laurens GA-
811 PM EDT Mon Jul 12 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN JEFFERSON...SOUTHEASTERN
WASHINGTON...NORTHWESTERN EMANUEL...JOHNSON AND NORTHEASTERN LAURENS
COUNTIES UNTIL 900 PM EDT...

At 810 PM EDT...a strong thunderstorm was near Scott and Meeks,
moving north at 25 mph.

  HAZARD...Winds up to 40 mph, pea sized hail, frequent lightning
           and heavy rain.

  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.

Some locations in the path of this storm include
Wrightsville, Adrian, Harrison, Kite, Lovett, Spann, Norristown
Junction, Donovan, New Home, Meeks, Scott and Pringle.

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 3250 8250 3250 8255 3251 8256 3250 8262
      3251 8265 3250 8265 3250 8272 3279 8282
      3285 8264 3281 8242
TIME...MOT...LOC 0010Z 178DEG 22KT 3258 8262

HAIL...0.25IN
WIND...40MPH

Special Weather Statement
National Weather Service Peachtree City GA
825 PM EDT Mon Jul 12 2021

GAZ030-031-041>043-130115-
Polk GA-Douglas GA-Haralson GA-Carroll GA-Paulding GA-
825 PM EDT Mon Jul 12 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN POLK...NORTHWESTERN
DOUGLAS...EASTERN HARALSON...NORTHEASTERN CARROLL AND PAULDING
COUNTIES UNTIL 915 PM EDT...

At 824 PM EDT...a strong thunderstorm was over Temple, moving north
at 30 mph.

  HAZARD...Winds up to 40 mph, pea sized hail, frequent lightning
           and heavy rain.

  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.

Some locations in the path of this storm include
Dallas, Buchanan, Villa Rica, Bremen, Temple, Rockmart, Hiram,
Braswell, Yorkville, Eubank Lake, Antioch, Van Wert, Draketown, Lake
Val-Do-Mar, Treasure Lake, New Georgia 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 3403 8498 3394 8474 3364 8492 3366 8513
      3400 8519
TIME...MOT...LOC 0024Z 186DEG 25KT 3373 8502

HAIL...0.25IN
WIND...40MPH

Special Weather Statement
National Weather Service Peachtree City GA
840 PM EDT Mon Jul 12 2021

GAZ111>113-130130-
Toombs GA-Wheeler GA-Montgomery GA-
840 PM EDT Mon Jul 12 2021

...SIGNIFICANT WEATHER ADVISORY FOR TOOMBS...SOUTHEASTERN WHEELER AND
SOUTHERN MONTGOMERY COUNTIES UNTIL 930 PM EDT...

At 839 PM EDT...a line of strong thunderstorms extended from near
Plant Hatch to near Graham, moving north at 20 mph.

  HAZARD...Winds up to 40 mph, pea sized hail, frequent lightning
           and heavy rain.

  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.

Some locations in the path of these storms include
Lyons, Vidalia, Uvalda, Ailey, Higgston, Santa Claus, Alston, Center,
Toombs Central, Ohoopee, New Branch, Ponderosa, McNatt Falls, South
Thompson, English Eddy, Rock Springs, Cedar Crossing, Johnson Corner,
Charlotteville and Grays Landing.

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 8228 3193 8230 3195 8231 3193 8232
      3194 8238 3196 8238 3195 8240 3197 8243
      3197 8250 3196 8248 3195 8249 3196 8253
      3196 8257 3193 8261 3214 8262 3227 8242
      3229 8223 3217 8218 3191 8223
TIME...MOT...LOC 0039Z 192DEG 16KT 3191 8228 3177 8256

HAIL...0.25IN
WIND...40MPH