Special Weather Statement, NWS Atlanta, GA

Area Forecast Discussion
National Weather Service Peachtree City GA
1202 PM EDT Mon May 3 2021

.UPDATE...

A Tornado Watch continues for portions of North and Central
Georgia until 4 PM EDT as environmental parameters ramped up
quickly to produce cyclic supercells around the Atlanta
metropolitan area earlier this morning with at least one radar
confirmed tornado in central Fulton county. Trends look to be
decreasing as storms are organizing into a more linear structure
with mesocyclones occluding quickly, but quick spin-up tornadoes
remain a possibility along with damaging wind gusts, and a chance
for large hail through the rest of the afternoon. Storms will
persist through the afternoon into the early evening with very
warm, and moist Gulf airmass in place over the forecast area. A
break is expected tonight with a lull in mid-level forcing before
storms make their way back into the forecast area tomorrow as
well.

Thiem

&&

.PREV DISCUSSION... /Issued 738 AM EDT Mon May 3 2021/

SHORT TERM /Today through Tuesday/...

Beginning to see some better convective initiation over eastern
Alabama this morning, and expect moderate instability will be
sufficient for strong to severe storms by this afternoon.

A Slight Risk for severe storms has been issued by SPC for Day 1 as
upper shortwave support and strong axis of deep moisture contribute
to moderate instability. Already seeing storms firing this morning
over western and north Georgia, and expect waves of activity today,
with the coverage and intensity of afternoon storms dependent on
this morning's activity. At this point, although highest threats are
large hail and damaging winds, the environment supports a non-zero
tornado threat as well. Breaks in the activity late this morning or
early afternoon would allow daytime heating to invigorate
convection, particularly since most Hi-Res solutions are now showing
a more prominent band of storms setting up north of the Atlanta area
by mid morning rather than over the northern Gulf. As such, we can't
count on upstream convection from cutting off available ingredients.

Though PoPs do diminish into the late evening hours as the system
pulls away from the region, have continued low-end chances over
north Georgia overnight, then likely/categorical over the area
Tuesday as ample southwest flow accompanies a front.

QPF through the short-term period appears manageable, particularly
given the recent dryness. Along the southern Appalachians and
surrounding areas, generally 3 to 4 inches of ran is expected.
Outside of this area, rainfall amounts are generally 1 to 3 inches
north of the fall line, and under 1 inch to the south. It's possible
that training storms or quickly accumulating rainfall could cause
isolated drainage or flooding issues.

Muggy conditions are expected with high temperatures in the 70s and
80s, and lows generally in the 60s, matched with high cloud cover
and moisture content.

31

LONG TERM /Tuesday Night through Sunday/...

Highest impact portion of fcst period will be the beginning as the
upper wave pushes across the area Tuesday night ahead of the
translated sfc cold front. The CWA looks to remain in the warm
sector of the sfc low through the overnight, which is when some of
the better juxtaposition of decent conditional instability,
marginally strong deep layer shear, and helicity rich low levels
are in place. Given such a setup, strong to severe convection
could occur anytime Tuesday night with the main threats of
damaging winds, isolated tornadoes, and heavy rain. The SPC Day 2
outlook did increase/expand to have Enhanced Risk in parts of
west, then NW majority of other area in Slight Risk.

As the stronger dynamics eject NEWD, the sfc cold front elongates
and pushes farther south across the area Wed, focusing the likely
pops for showers and storms mainly across central GA by Wed
afternoon. While shear/instability is more limited, a few storms
could still be strong to isolated severe in parts of the SE CWA,
which matches up with a lingering Day 3 Marginal Risk.

Otherwise rest of fcst period looks relatively quiet with mainly
drier zonal flow for Thursday, then NW flow transition with
continued dry airmass Fri/Sat, followed by some weaker moisture
return and possible upper impulse bringing some slight to low end
chance pops for showers/storms in north GA on Sunday.

Temps dip closer to norms Wed night post CFP then decently below
climo for Thurs night and Fri night with most areas reaching the
upper 40s to low 50s.

Baker

AVIATION...
12Z Update...
Showers and thunderstorms will impact the area today in two
'waves'. Following this morning's activity, a brief lull is
expected before a band or line of storms develops and moves south
of Atlanta-area sites and into central Georgia this afternoon and
evening. Winds will be generally SSW at 8-12kt with gusts to
20-22kt, but could briefly go SSE. Mostly IFR/MVFR conditions this
morning will improve to high MVFR or low VFR today, then degrade
again to IFR Tuesday morning.

//ATL Confidence...12Z Update...
Low on specific TS timing at KATL.
High on wind speeds.
Medium on all other elements.

31

&&

.PRELIMINARY POINT TEMPS/POPS...
Athens          79  66  81  66 /  70  40  80  80
Atlanta         79  68  81  67 /  70  40  90  80
Blairsville     74  62  76  60 /  90  50  90  90
Cartersville    79  65  82  63 /  80  40  90  90
Columbus        82  69  85  67 /  70  40  80  80
Gainesville     76  66  79  66 /  90  40  90  90
Macon           84  68  85  67 /  50  40  70  60
Rome            80  66  82  64 /  80  40  90  90
Peachtree City  80  67  82  65 /  70  30  90  80
Vidalia         90  70  91  71 /  30  20  50  30

&&

.FFC WATCHES/WARNINGS/ADVISORIES...
Tornado Watch until 4 PM EDT this afternoon for the following
zones: Baldwin...Barrow...Bartow...Bibb...Butts...Carroll...
Chattahoochee...Cherokee...Clarke...Clayton...Cobb...Coweta...
Crawford...DeKalb...Douglas...Fayette...Floyd...Forsyth...
Greene...Gwinnett...Hancock...Haralson...Harris...Heard...
Henry...Jasper...Jones...Lamar...Marion...Meriwether...Monroe...
Morgan...Muscogee...Newton...North Fulton...Oconee...
Oglethorpe...Paulding...Pike...Polk...Putnam...Rockdale...South
Fulton...Spalding...Talbot...Taliaferro...Taylor...Troup...
Upson...Walton...Warren...Wilkes.

&&

SHORT TERM...Thiem
LONG TERM....Baker
AVIATION...31

Hazardous Weather Outlook
National Weather Service Peachtree City GA
506 AM EDT Mon May 3 2021

GAZ001>009-011>016-019>025-027-030>039-041>062-066>076-078>086-
089>098-102>113-040915-
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-
506 AM EDT Mon May 3 2021

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

.DAY ONE...Today and Tonight...

Scattered thunderstorms are likely across much of the area today.
Some could be strong to isolated severe with hail up to one inch,
damaging winds, heavy rain, and frequent lightning as the primary
threats. A brief tornado is also possible.

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

Scattered thunderstorms are again likely across much of the area
for Tuesday and Tuesday night with another disturbance and
frontal system. Some could be strong to severe mainly late Tuesday
afternoon into the overnight with damaging winds, isolated
tornadoes, heavy rain and frequent lightning as the primary
threats.

While some isolated to scattered thunderstorms could occur on
Wednesday as a front pushes southward, any strong to isolated
severe potential should be limited to south and east central
Georgia.

No hazardous weather is expected Thursday through Saturday. A
slight chance of thunderstorms could return to north Georgia on
Sunday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not requested at this time, 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
1203 PM EDT Mon May 3 2021

GAZ067-068-031645-
Meriwether GA-Pike GA-
1203 PM EDT Mon May 3 2021

...SIGNIFICANT WEATHER ADVISORY FOR MERIWETHER AND PIKE COUNTIES
UNTIL 1245 PM EDT...

At 1203 PM EDT...a strong thunderstorm was near Gay, or near
Greenville...moving east at 25 mph.

  HAZARD...Up to 40 mph wind...frequent cloud to ground 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
Zebulon, Greenville, Woodbury, Molena, Williamson, Meansville, Gay,
Rocky Mount, Hilltop, Lifsey Springs, Hollonville, Alvaton, Imlac and
Wooster.

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 3319 8426 3304 8425 3303 8427 3300 8427
      3299 8442 3299 8450 3297 8474 3319 8474
TIME...MOT...LOC 1603Z 262DEG 22KT 3308 8463

WIND...40MPH

Special Weather Statement
National Weather Service Peachtree City GA
1222 PM EDT Mon May 3 2021

GAZ025-027-035-036-031645-
Madison GA-Jackson GA-Barrow GA-Clarke GA-
1222 PM EDT Mon May 3 2021

...SIGNIFICANT WEATHER ADVISORY FOR WESTERN MADISON...SOUTHEASTERN
JACKSON...EASTERN BARROW AND NORTHWESTERN CLARKE COUNTIES UNTIL 1245
PM EDT...

At 1221 PM EDT...a strong thunderstorm was over Arcade, or over
Jefferson...moving east at 45 mph.

  HAZARD...40 to 50 mph wind...frequent cloud to ground 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
Winder, Jefferson, Commerce, Athens, Statham, Arcade, Nicholson,
Bogart, Ila, Athens-Clarke County, Westgate Park, James Holland Youth
Sports Cmpx, Pocataligo, Bear Creek Reservoir, Peach State Speedway,
Beechwood Hills, Sandy Creek Recreation Area, Oconee Heights,
Barretts Mill and Apple Valley.

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 3424 8322 3392 8337 3395 8353 3397 8354
      3396 8355 3399 8372 3420 8357 3422 8342
      3420 8340 3421 8337 3422 8336
TIME...MOT...LOC 1621Z 259DEG 39KT 3408 8359

WIND...50MPH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1232 PM EDT MON MAY 03 2021

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

1030 AM     TORNADO          2 WNW SANDTOWN          33.71N  84.59W
05/03/2021                   FULTON             GA   BROADCAST MEDIA

            **PRELIMINARY REPORT** NUMEROUS REPORTS OF DAMAGE TO
            TREES, POWERLINES, AND HOMES AND BUSINESSES ACROSS
            PORTIONS OF FULTON COUNTY. PER RADAR ESTIMATES, TORNADO
            BEGAN NEAR THE CHATTAHOOCHEE RIVER AND SWEETWATER WATER
            CREEK AREA AT 10:20 AM AND TRACKED ENE, DOING DAMAGE
            ALONG FULTON INDUSTRIAL BLVD EAST TO APPROXIMATELY
            I-285.

&&

EVENT NUMBER FFC2100278

LUSK

Special Weather Statement
National Weather Service Peachtree City GA
1233 PM EDT Mon May 3 2021

GAZ035>037-047-031700-
Walton GA-Barrow GA-Clarke GA-Oconee GA-
1233 PM EDT Mon May 3 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN WALTON...SOUTHEASTERN
BARROW...WESTERN CLARKE AND NORTHWESTERN OCONEE COUNTIES UNTIL 100 PM
EDT...

At 1233 PM EDT...a strong thunderstorm was over Campton, or near
Monroe...moving east at 45 mph.

  HAZARD...Up to 40 mph wind...frequent cloud to ground 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
Monroe, Loganville, Statham, Bogart, North High Shoals, Bethlehem,
Between, Good Hope, Athens-Clarke County, Bold Springs, Windsor,
Eastville, Nicholasville, Campton and Gratis.

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 3392 8337 3379 8358 3379 8378 3384 8391
      3390 8383 3398 8363
TIME...MOT...LOC 1633Z 274DEG 41KT 3385 8371

WIND...40MPH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1237 PM EDT MON MAY 03 2021

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

1022 AM     TSTM WND DMG     DOUGLASVILLE            33.75N  84.75W
05/03/2021                   DOUGLAS            GA   EMERGENCY MNGR

            STRONG WINDS IN DOUGLASVILLE BROUGHT DOWN A TREE ON TOP
            OF A VEHICLE.

&&

EVENT NUMBER FFC2100279

LUSK

Special Weather Statement
National Weather Service Peachtree City GA
1246 PM EDT Mon May 3 2021

GAZ021-022-032>034-045-031715-
North Fulton GA-Cobb GA-Cherokee GA-DeKalb GA-Forsyth GA-Gwinnett GA-
1246 PM EDT Mon May 3 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTH FULTON...NORTHEASTERN
COBB...SOUTHERN CHEROKEE...NORTHWESTERN DEKALB...SOUTHWESTERN FORSYTH
AND WESTERN GWINNETT COUNTIES UNTIL 115 PM EDT...

At 1246 PM EDT...a strong thunderstorm was over Sandy Plains, or near
Marietta...moving east at 50 mph.

  HAZARD...40 to 50 mph wind...frequent cloud to ground 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
Marietta, Sandy Springs, Roswell, Johns Creek, Alpharetta, Smyrna,
Dunwoody, Milton, Duluth, Woodstock, Lilburn, Chamblee, Norcross,
Doraville, Berkeley Lake, Fair Oaks, North Atlanta, Mountain Park,
Mount Bethel and Brookwood.

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 3408 8455 3414 8444 3418 8427 3417 8413
      3390 8411 3388 8455
TIME...MOT...LOC 1646Z 256DEG 44KT 3401 8449

WIND...50MPH