Alert archive / Georgia / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 113, NWS Atlanta, GA

July 23, 2021DeKalb County, Fulton County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jul 23, 2021, 5:26 PM EDT for DeKalb County, Fulton County, Georgia. It was in force for 34 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Jul 23, 2021, 5:26 PM EDT (21:26 UTC)
Expired
Jul 23, 2021, 6:00 PM EDT
In force
34 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), 45 km from the middle of the area, began a volume at 21:26 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.

What was reported inside it

TimeReportWhereRemark
Jul 23, 5:30 PM EDTTSTM WND DMG1 E Grant Park-Zoo Atla, GANUMEROUS TREES REPORTED DOWN WITHIN THE GRANT PARK/GLENWOOD PARK/ORMEWOOD PARK/EAST ATLANTA VILLIAGE NEIGHBORHOODS IN EAST ATLANTA.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 9.4 hours before the alert went out and 42 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-pSkew-T log-p diagram, Peachtre/Fal Fld, GA at 12:00Z on 2021-07-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 158 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Peachtre/Fal Fld, GA at 12:00Z on 2021-07-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 20 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
158 J/kg
Mixed-layer CIN
-159 J/kg
Mixed-layer LCL
1211 m above ground
0-6 km bulk shear
8 kt
0-1 km storm-relative helicity
20 m²/s²
0-3 km storm-relative helicity
36 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

323 
WUUS52 KFFC 232126
SVRFFC
GAC089-121-232200-
/O.NEW.KFFC.SV.W.0113.210723T2126Z-210723T2200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Peachtree City GA
526 PM EDT Fri Jul 23 2021

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 600 PM EDT.

* At 526 PM EDT, a severe thunderstorm was located over Grant
  Park-Zoo Atlanta, or near Atlanta, moving southeast at 5 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Atlanta, Decatur, Grant Park-Zoo Atlanta, Candler-Mcafee, Druid
  Hills, Belvedere Park, West End, Sweet Auburn, Turner Field,
  Kirkwood, Lakewood Park, Panthersville, East Lake, Gresham Park 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 3379 8432 3370 8422 3365 8428 3365 8431
      3368 8441 3375 8444
TIME...MOT...LOC 2126Z 337DEG 5KT 3372 8435 

HAIL...<.75IN
WIND...60MPH
 
$$
2 follow-up statements
712 
WWUS52 KFFC 232139
SVSFFC

Severe Weather Statement
National Weather Service Peachtree City GA
539 PM EDT Fri Jul 23 2021

GAC089-121-232200-
/O.CON.KFFC.SV.W.0113.000000T0000Z-210723T2200Z/
DeKalb GA-Fulton GA-
539 PM EDT Fri Jul 23 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM EDT
FOR SOUTHWESTERN DEKALB AND CENTRAL FULTON COUNTIES...

At 539 PM EDT, a severe thunderstorm was located over Grant Park-Zoo
Atlanta, or over Atlanta, and is nearly stationary.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Atlanta, Decatur, Grant Park-Zoo Atlanta, Candler-Mcafee, Druid
Hills, Belvedere Park, West End, Sweet Auburn, Turner Field,
Kirkwood, Lakewood Park, Panthersville, East Lake, Gresham Park and
Little Five Points.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

&&

LAT...LON 3379 8432 3370 8422 3365 8428 3365 8431
      3368 8441 3375 8444
TIME...MOT...LOC 2139Z 085DEG 2KT 3373 8438 

HAIL...1.00IN
WIND...60MPH
 
$$
199 
WWUS52 KFFC 232156
SVSFFC

Severe Weather Statement
National Weather Service Peachtree City GA
556 PM EDT Fri Jul 23 2021

GAC089-121-232206-
/O.EXP.KFFC.SV.W.0113.000000T0000Z-210723T2200Z/
DeKalb GA-Fulton GA-
556 PM EDT Fri Jul 23 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN DEKALB AND
CENTRAL FULTON COUNTIES WILL EXPIRE AT 600 PM EDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Peachtree City.

LAT...LON 3379 8432 3370 8422 3365 8428 3365 8431
      3368 8441 3375 8444
TIME...MOT...LOC 2156Z 337DEG 5KT 3371 8437 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 23, 12:59 PM EDTSpecial Weather StatementFFCTwiggs31 min
Jul 23, 1:33 PM EDTSevere Thunderstorm WarningFFCHouston, Twiggs42 min
Jul 23, 1:58 PM EDTSpecial Weather StatementFFCHouston32 min
Jul 23, 2:29 PM EDTSpecial Weather StatementFFCDooly31 min
Jul 23, 2:33 PM EDTSpecial Weather StatementFFCBibb27 min
Jul 23, 2:56 PM EDTSpecial Weather StatementFFCWilcox34 min
Jul 23, 3:36 PM EDTSpecial Weather StatementFFCJones24 min
Jul 23, 4:04 PM EDTSevere Thunderstorm WarningFFCLamar, Pike, Upson41 min
Jul 23, 4:12 PM EDTSpecial Weather StatementFFCForsyth33 min
Jul 23, 5:11 PM EDTSpecial Weather StatementFFCDeKalb34 min
Jul 23, 5:51 PM EDTSpecial Weather StatementFFCDeKalb24 min
Jul 23, 6:07 PM EDTSpecial Weather StatementFFCDeKalb38 min
Jul 23, 6:10 PM EDTSpecial Weather StatementFFCForsyth35 min
Jul 23, 6:22 PM EDTFlash Flood WarningFFCDeKalb, Fulton4 hr
Jul 23, 6:46 PM EDTFlash Flood WarningFFCDeKalb4 hr
Jul 23, 7:01 PM EDTRiver Flood WarningFFCDeKalb96 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2021Every severe thunderstorm warning in 2021

Sources

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