Alert archive / Georgia / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 351, NWS Atlanta, GA

July 28, 2023DeKalb County, Fulton County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jul 28, 2023, 6:56 PM EDT for DeKalb County, Fulton County, Georgia. It was in force for 49 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 28, 2023, 6:56 PM EDT (22:56 UTC)
Expired: Jul 28, 2023, 7:45 PM EDT
In force: 49 min
Issued by: NWS Atlanta, GA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties DeKalb County, GA, Fulton County, GA

The radar

The Atlanta radar (KFFC), 53 km from the middle of the area, began a volume at 23:00 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 10.9 hours before the alert went out and 50 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 700 J/kg
Mixed-layer CIN: -68 J/kg
Mixed-layer LCL: 1263 m above ground
0-6 km bulk shear: 1 kt
0-1 km storm-relative helicity: 12 m²/s²
0-3 km storm-relative helicity: 44 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

451 
WUUS52 KFFC 282256
SVRFFC
GAC089-121-282345-
/O.NEW.KFFC.SV.W.0351.230728T2256Z-230728T2345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Peachtree City GA
656 PM EDT Fri Jul 28 2023

The National Weather Service in Peachtree City has issued a

* Severe Thunderstorm Warning for...
  Southwestern DeKalb County in north central Georgia...
  Central Fulton County in north central Georgia...

* Until 745 PM EDT.

* At 656 PM EDT, a severe thunderstorm was located over Clarkston, or
  near Decatur, moving south at 20 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Atlanta, Decatur, Clarkston, Stone Mountain, Avondale Estates, Pine
  Lake, Belvedere Park, North Decatur, North Druid Hills, Midtown,
  Grant Park-Zoo Atlanta, Candler-Mcafee, Druid Hills, North Atlanta,
  Tucker, Belmont, Sweet Auburn, Piedmont Park, East Lake, and Little
  Five Points.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

If you see wind damage...hail or flooding...wait until the storm has
passed...and then call the National Weather Service toll free
at 1 8 6 6 7 6 3 4 4 6 6 or tweet us your report at NWSATLANTA.

&&

LAT...LON 3387 8438 3382 8429 3383 8415 3370 8417
      3367 8429 3372 8440
TIME...MOT...LOC 2256Z 009DEG 17KT 3383 8425 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Albright

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Atlanta, GA wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 28, 3:04 PM EDT, 3 hours 52 minutes earlier.

Area forecast discussion, Jul 28, 3:04 PM EDT, 3 hours 52 minutes before

Area Forecast Discussion
National Weather Service Peachtree City GA
304 PM EDT Fri Jul 28 2023

...Afternoon Area Forecast Discussion...

.SHORT TERM...
(This evening through Saturday)
Issued at 303 PM EDT Fri Jul 28 2023

Key Message

*Isolated to scattered showers and thunderstorms today and tomorrow,
with more widespread activity for our most southeastern counties.
While the probability for severe weather remains low, a few storms
could become strong with gusty winds, frequent lightning, and
locally heavy rainfall being the primary threats.

The surface low that has now moved onshore this afternoon will
progress northward throughout the short term. While bands of showers
and thunderstorms have organized along a line from Columbus to Macon
at the time of writing, more isolated to scattered thunderstorms
will be possible for areas north. Areas south and east will see more
widespread shower and thunderstorm activity as it is closer to the
center of low pressure. For the most part, the nature of today's
showers and thunderstorms for areas north of the aforementioned line
from Columbus to Macon are likely to remain more isolated and short-
lived. While low level lapse rates are robust, storms in this sector
are struggling to maintain themselves with weak mid-level lapse
rates, a lack of upper level support, and relatively modest (for
late July, anyway) SBCAPE of 2000 J/kg or less. While the threat for
severe weather remains low, a few storms could produce strong gusty
winds, frequent lightning, and locally heavy rainfall. Areas closer
to the center of the surface low will see elevated PoP chances over
night and through the morning hours despite the loss of daytime
heating. A similar forecast is on tap tomorrow as the low pressure
tracks north and a mid-level trough develops east of the forecast
area. Will need to monitor the potential for more organized storms
approaching from the north tomorrow night at the end of the period
as the forecast area returns to northwest flow.

KAL

&&

.LONG TERM...
(Sunday morning through next Thursday)
Issued at 303 PM EDT Fri Jul 28 2023

Extended forecast continues on trend with no significant weather
impacts aside from above normal temperatures and below normal
rainfall.

By late weekend, familiar pattern returns with large high pressure
ridge over the western CONUS and broad trough extending down along
the eastern coastal states. The return of NW flow over the Southeast
unfortunately does not look to drop temperatures too much, but
instead puts the state in position for 'ridge riders' to impact the
area starting as early as Monday night. There is still plenty of
uncertainty with how the forecast will play out, but with prominent
upper ridge and sufficient moisture and instability, there continues
to be the potential for high-impact storms (damaging winds) through
next week. For now, have slight chance to chance PoPs each afternoon
and evening through the period.

Seven-day rainfall totals continue to be limited, with most of the
CWA at 0.50 inches or less. Pockets of higher totals - to around
1.00 inch - are possible, but with warm highs and low rainfall
totals, could begin to see more widespread abnormally dry conditions
in the next week.

31

&&

.AVIATION...
(18Z TAFS)
Issued at 155 PM EDT Fri Jul 28 2023

VFR cigs/vsbys this afternoon where isolated SHRA/TSRA have
initiated and will persist through sunset. VCSH will be possible
for MCN/CSG overnight through the early morning hours. MVFR vsbys
will be possible briefly at metro sites with MVFR cigs tomorrow
morning at CSG/MCN. TSRA chances return to KATL tomorrow
afternoon. SE winds will be light at 5KT or less and will
transition to SW in the overnight hours becoming NW by the
afternoon.

//ATL Confidence...18Z Update...
Medium confidence on SHRA/TSRA and MVFR cigs/vsbys. High
confidence on remaining elements.

KAL

&&

.PRELIMINARY POINT TEMPS/POPS...
Athens          72  92  73  96 /  30  40  20  20
Atlanta         74  96  76  97 /  20  40  10  20
Blairsville     67  88  68  88 /  20  40  20  30
Cartersville    73  95  73  97 /  20  20  10  20
Columbus        75  96  76  99 /  30  50  10  20
Gainesville     72  93  74  95 /  20  40  20  20
Macon           74  94  74  99 /  40  50  20  20
Rome            74  96  73  97 /  10  20  10  20
Peachtree City  72  95  73  98 /  30  40  10  20
Vidalia         74  90  74  97 /  50  60  20  30

&&

.FFC WATCHES/WARNINGS/ADVISORIES...
None.
&&

SHORT TERM...KAL
LONG TERM....31
AVIATION...KAL

Hazardous weather outlook, Jul 28, 11:47 AM EDT, 7 hours 9 minutes before

Hazardous Weather Outlook
National Weather Service Peachtree City GA
1147 AM EDT Fri Jul 28 2023

GAZ001>009-011>016-019>025-027-030>039-041>062-066>076-078>086-
089>098-102>113-291600-
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-
1147 AM EDT Fri Jul 28 2023

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

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

Scattered thunderstorms are expected this afternoon and evening
especially over middle Georgia. These thunderstorms are not
expected to be severe, however a few storms could briefly become
strong with heavy rain, lightning and gusty winds.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday...

Scattered afternoon and evening thunderstorms are expected
Saturday through Thursday. Some of the storms could be strong with
heavy rain, lightning and gusty winds.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed through tonight.

In the hours before

Special weather statement, Jul 28, 5:30 PM EDT, 1 hour 26 minutes before

Special Weather Statement
National Weather Service Peachtree City GA
530 PM EDT Fri Jul 28 2023

GAZ024-282200-
Banks GA-
530 PM EDT Fri Jul 28 2023

...A strong thunderstorm will impact portions of Banks County through
600 PM EDT...

At 530 PM EDT, a strong thunderstorm was over Pinefield Crossroads,
or 7 miles north of Homer, moving southwest at 10 mph.

HAZARD...Winds up to 40 mph.

SOURCE...Radar indicated.

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

Locations impacted include...
Homer, Lula, Pinefield Crossroads, and Hollingsworth.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People outdoors should seek shelter immediately.

&&

LAT...LON 3448 8347 3447 8342 3446 8340 3444 8339
      3439 8338 3434 8339 3428 8343 3427 8352
      3434 8365 3435 8365 3436 8367 3441 8365
      3442 8362 3444 8361 3449 8354
TIME...MOT...LOC 2130Z 036DEG 10KT 3444 8347

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

Albright

Local storm report, Jul 28, 6:18 PM EDT, 38 minutes before

Preliminary Local Storm Report
National Weather Service Peachtree City GA
618 PM EDT Fri Jul 28 2023

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

0611 PM     Tstm Wnd Dmg     2 NNE Sweat Mountain    34.09N 84.45W
07/28/2023                   Cherokee           GA   Public

            3-inch tree limbs broken.

&&

Local storm report, Jul 28, 6:32 PM EDT, 24 minutes before

Preliminary Local Storm Report
National Weather Service Peachtree City GA
632 PM EDT Fri Jul 28 2023

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

0611 PM     Tstm Wnd Dmg     2 NW Mountain Park      34.10N 84.44W
07/28/2023                   Cherokee           GA   Emergency Mngr

            Tree down on home on Winding River Trail.

&&

Local storm report, Jul 28, 6:34 PM EDT, 22 minutes before

Preliminary Local Storm Report
National Weather Service Peachtree City GA
634 PM EDT Fri Jul 28 2023

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

0616 PM     Tstm Wnd Dmg     1 NE Sweat Mountain     34.08N 84.45W
07/28/2023                   Cherokee           GA   Emergency Mngr

            Tree down on home on Cherecobb Drive.

&&

Local storm report, Jul 28, 6:35 PM EDT, 21 minutes before

Preliminary Local Storm Report
National Weather Service Peachtree City GA
635 PM EDT Fri Jul 28 2023

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

0618 PM     Tstm Wnd Dmg     1 NNW Sweat Mountain    34.08N 84.46W
07/28/2023                   Cherokee           GA   Emergency Mngr

            Treed own on home on Glens Drive.

&&

Local storm report, Jul 28, 6:37 PM EDT, 19 minutes before

Preliminary Local Storm Report
National Weather Service Peachtree City GA
637 PM EDT Fri Jul 28 2023

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

0619 PM     Tstm Wnd Dmg     1 WSW Mountain Park     34.08N 84.43W
07/28/2023                   Cherokee           GA   Emergency Mngr

            Multiple Trees down around HWY 92 and Wiley
            Bridge Rd.

&&

The office that day

Everything else NWS Atlanta, GA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 28, 3:01 PM EDT	Special Weather Statement	FFC	Peach	29 min
Jul 28, 3:05 PM EDT	Special Weather Statement	FFC	Taylor	25 min
Jul 28, 3:23 PM EDT	Special Weather Statement	FFC	Peach	37 min
Jul 28, 4:20 PM EDT	Special Weather Statement	FFC	White	25 min
Jul 28, 4:41 PM EDT	Severe Thunderstorm Warning	FFC	Hall, Lumpkin, White	55 min
Jul 28, 4:43 PM EDT	Special Weather Statement	FFC	Fannin	32 min
Jul 28, 5:06 PM EDT	Severe Thunderstorm Warning	FFC	Dawson, Forsyth, Hall, Lumpkin	39 min
Jul 28, 5:15 PM EDT	Special Weather Statement	FFC	Fannin	30 min
Jul 28, 5:30 PM EDT	Special Weather Statement	FFC	Banks	30 min
Jul 28, 6:17 PM EDT	Severe Thunderstorm Warning	FFC	Cherokee, Cobb, Forsyth, Fulton	43 min
Jul 28, 6:42 PM EDT	Severe Thunderstorm Warning	FFC	DeKalb, Fulton, Gwinnett	48 min
Jul 28, 7:16 PM EDT	Severe Thunderstorm Warning	FFC	Bartow	44 min
Jul 28, 7:23 PM EDT	Special Weather Statement	FFC	Barrow	37 min
Jul 28, 7:39 PM EDT	Special Weather Statement	FFC	Haralson	36 min
Jul 28, 7:49 PM EDT	Severe Thunderstorm Warning	FFC	Carroll, Heard	41 min
Jul 28, 7:55 PM EDT	Special Weather Statement	FFC	Barrow, Oconee	35 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2023 Every severe thunderstorm warning in 2023

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.