Alert archive / Georgia / Flash Flood Warnings in 2026

Flash Flood Warning 69, NWS Atlanta, GA

September 11, 20264 counties in Georgia

NWS Atlanta, GA issued this flash flood warning at Sep 11, 2026, 5:11 PM EDT for 4 counties in Georgia. It was in force for 3 hr. 2 reports 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
Sep 11, 2026, 5:11 PM EDT (21:11 UTC)
Expired
Sep 11, 2026, 8:37 PM EDT
In force
3 hr
Issued by
NWS Atlanta, GA
Area
Storm-based polygon
Flood severity
None

Counties DeKalb County, GA, Newton County, GA, Rockdale County, GA, Walton County, GA

The radar

The Atlanta radar (KFFC), 63 km from the middle of the area, began a volume at 21:10 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
Sep 11, 6:17 PM EDTFLASH FLOOD2 Wsw Jersey, GACorrects previous flash flood report from 2 WSW Jersey. Emergency manager reported several trees down on power lines at the intersection of Lower Jersey Rd and Cornish Mountain Church Rd. Trees were downed due to flooding with the location positioned between t
Sep 11, 6:17 PM EDTFLASH FLOOD2 Wsw Jersey, GAEmergency manager reported a tree down at the intersection of Lower Jersey Rd and Cornish Mountain Church Rd. Tree was downed due to flooding with location positioned between two creeks.

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, 9.2 hours before the alert went out and 57 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 2026-09-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1553 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 2026-09-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -1 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
1553 J/kg
Mixed-layer CIN
-38 J/kg
Mixed-layer LCL
731 m above ground
0-6 km bulk shear
8 kt
0-1 km storm-relative helicity
-1 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.

135 
WGUS52 KFFC 112111
FFWFFC
GAC089-217-247-297-120315-
/O.NEW.KFFC.FF.W.0069.260911T2111Z-260912T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Peachtree City GA
511 PM EDT Fri Sep 11 2026

The National Weather Service in Peachtree City has issued a

* Flash Flood Warning for...
  Southeastern DeKalb County in north central Georgia...
  Northern Newton County in north central Georgia...
  Rockdale County in north central Georgia...
  Southwestern Walton County in north central Georgia...

* Until 1115 PM EDT Friday.

* At 511 PM EDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. Between 2 and 3 inches of rain
  have fallen. Additional rainfall amounts of 1 to 2 inches are
  possible in the warned area. Flash flooding is ongoing or expected
  to begin shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar indicated.

  IMPACT...Flash flooding of small creeks and streams, urban areas,
           highways, streets and underpasses as well as other poor
           drainage and low-lying areas.

* Some locations that will experience flash flooding include...
  Conyers, Covington, Social Circle, Oxford, Lithonia, Walnut Grove,
  Jersey, Georgia International Horse Park, Lakeview Estates, Almon,
  Milstead, Gum Creek, Arabia Mountain, Redan, Belmont and
  Herndonville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Be aware of your surroundings and do not drive on flooded roads.

Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.

&&

LAT...LON 3365 8417 3366 8419 3374 8419 3375 8398
      3373 8370 3365 8366 3361 8373 3360 8389
      3360 8406 3361 8413

FLASH FLOOD...RADAR INDICATED

$$
2 follow-up statements
493 
WGUS72 KFFC 112229
FFSFFC

Flash Flood Statement
National Weather Service Peachtree City GA
629 PM EDT Fri Sep 11 2026

GAC089-217-247-297-120315-
/O.CON.KFFC.FF.W.0069.000000T0000Z-260912T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DeKalb GA-Newton GA-Rockdale GA-Walton GA-
629 PM EDT Fri Sep 11 2026

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1115 PM EDT THIS
EVENING FOR SOUTHEASTERN DEKALB, NORTHERN NEWTON, ROCKDALE AND
SOUTHWESTERN WALTON COUNTIES...

At 629 PM EDT, Doppler radar and automated rain gauges indicated
thunderstorms producing heavy rain across the warned area. Between
2.5 and 4 inches of rain have fallen. Additional rainfall amounts up
to 0.5 inches are possible in the warned area. Flash flooding is
ongoing or expected to begin shortly.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Radar and automated gauges.

IMPACT...Flash flooding of small creeks and streams, urban areas,
         highways, streets and underpasses as well as other poor
         drainage and low-lying areas.

Some locations that will experience flash flooding include...
  Conyers, Covington, Social Circle, Oxford, Lithonia, Walnut Grove,
  Jersey, Georgia International Horse Park, Lakeview Estates, Almon,
  Milstead, Gum Creek, Arabia Mountain, Redan, Belmont and
  Herndonville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Be aware of your surroundings and do not drive on flooded roads.

Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.

&&

LAT...LON 3365 8417 3366 8419 3374 8419 3375 8398
      3373 8370 3365 8366 3361 8373 3360 8389
      3360 8406 3361 8413

FLASH FLOOD...RADAR AND GAUGE INDICATED

$$
050 
WGUS72 KFFC 120037
FFSFFC

Flash Flood Statement
National Weather Service Peachtree City GA
837 PM EDT Fri Sep 11 2026

GAC089-217-247-297-120047-
/O.CAN.KFFC.FF.W.0069.000000T0000Z-260912T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DeKalb GA-Newton GA-Rockdale GA-Walton GA-
837 PM EDT Fri Sep 11 2026

...FLASH FLOOD WARNING IS CANCELLED FOR SOUTHEASTERN DEKALB, NORTHERN
NEWTON, ROCKDALE AND SOUTHWESTERN WALTON COUNTIES...

Flood waters have receded. The heavy rain has ended. Flooding is no
longer expected to pose a threat. Please continue to heed remaining
road closures.

&&

LAT...LON 3365 8417 3366 8419 3374 8419 3375 8398
      3373 8370 3365 8366 3361 8373 3360 8389
      3360 8406 3361 8413

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 11, 1:48 PM EDTSpecial Weather StatementFFCHarris27 min
Sep 11, 2:43 PM EDTSpecial Weather StatementFFCDooly32 min
Sep 11, 4:00 PM EDTSpecial Weather StatementFFCDouglas, Haralson30 min
Sep 11, 4:06 PM EDTSpecial Weather StatementFFCClayton24 min
Sep 11, 4:23 PM EDTFlash Flood WarningFFCCarroll, Douglas, Haralson, Paulding4 hr
Sep 11, 4:34 PM EDTFlash Flood WarningFFCClayton, DeKalb, Fulton4 hr
Sep 11, 4:41 PM EDTSpecial Weather StatementFFCPolk34 min
Sep 11, 4:46 PM EDTSpecial Weather StatementFFCForsyth29 min
Sep 11, 4:47 PM EDTSpecial Weather StatementFFCMorgan, Rockdale, Walton58 min
Sep 11, 5:08 PM EDTFlash Flood WarningFFCCobb, Fulton3 hr
Sep 11, 5:20 PM EDTSpecial Weather StatementFFCCherokee25 min
Sep 11, 5:22 PM EDTSpecial Weather StatementFFCMorgan, Oconee23 min
Sep 11, 5:40 PM EDTSpecial Weather StatementFFCPickens35 min
Sep 11, 5:54 PM EDTSpecial Weather StatementFFCBarrow, Hall, Jackson36 min
Sep 11, 6:22 PM EDTSpecial Weather StatementFFCPickens23 min
Sep 11, 6:42 PM EDTFlash Flood WarningFFCGilmer, Gordon, Pickens4 hr
Sep 11, 6:44 PM EDTSpecial Weather StatementFFCGlascock31 min
Sep 11, 6:53 PM EDTSevere Thunderstorm WarningFFCGilmer, Gordon, Murray, Pickens37 min

Nearby

Flash Flood Warnings in Georgia, 2026Every flash flood warning in 2026

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.