Alert archive / Georgia / Flash Flood Warnings in 2022

Flash Flood Warning 35, NWS Atlanta, GA

September 4, 2022Floyd County, Georgia

NWS Atlanta, GA issued this flash flood warning at Sep 4, 2022, 10:30 AM EDT for Floyd County, Georgia. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Sep 4, 2022, 10:30 AM EDT (14:30 UTC)
Expired
Sep 4, 2022, 4:30 PM EDT
In force
6 hr
Issued by
NWS Atlanta, GA
Area
Storm-based polygon
Flood severity
None

County Floyd County, GA

The radar

The Northeast Alabama radar (KHTX), 105 km from the middle of the area, began a volume at 14:29 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.

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 2.5 hours before the alert went out and 126 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 2022-09-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 868 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 2022-09-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 14 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
868 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
536 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
14 m²/s²
0-3 km storm-relative helicity
49 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

508 
WGUS52 KFFC 041430
FFWFFC
GAC115-042030-
/O.NEW.KFFC.FF.W.0035.220904T1430Z-220904T2030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Peachtree City GA
1030 AM EDT Sun Sep 4 2022

The National Weather Service in Peachtree City has issued a

* Flash Flood Warning for...
  Central Floyd County in northwestern Georgia...

* Until 430 PM EDT.

* At 1030 AM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 2 inches of rain 
  have fallen. The expected rainfall rate is 1 to 2 inches in 3 
  hours. Additional rainfall amounts of 1 to 3 inches are possible 
  in the warned area. Flash flooding is ongoing or expected to begin 
  shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar.

  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...
  Rome, Armuchee and Lindale.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3444 8518 3442 8511 3441 8511 3417 8515
      3416 8523 3443 8520 3443 8519

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL RATE...1-2 INCHES IN 3 HOURS

$$
1 follow-up statement
453 
WGUS72 KFFC 042031
FFSFFC

Flash Flood Statement
National Weather Service Peachtree City GA
431 PM EDT Sun Sep 4 2022

GAC115-042041-
/O.EXP.KFFC.FF.W.0035.000000T0000Z-220904T2030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Floyd GA-
431 PM EDT Sun Sep 4 2022

...FLASH FLOOD WARNING HAS EXPIRED FOR CENTRAL FLOYD COUNTY...

While the immediate flash flood threat has diminished, ongoing 
flooding continues nearby. Additional rainfall within the next 24 
hours could potentially lead to more flooding concerns for the area.

LAT...LON 3444 8518 3442 8511 3441 8511 3417 8515
      3416 8523 3443 8520 3443 8519

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 4, 4:58 AM EDTFlash Flood Warning EmergencyFFCChattooga18 hr
Sep 4, 6:55 AM EDTFlash Flood WarningFFCChattooga, Floyd16 hr
Sep 4, 8:58 AM EDTRiver Flood WarningFFCChattooga24 hr
Sep 4, 9:26 AM EDTFlash Flood WarningFFCChattooga, Floyd6 hr
Sep 4, 1:03 PM EDTRiver Flood WarningFFCFloyd12 hr
Sep 4, 2:48 PM EDTFlash Flood WarningFFCChattooga, Dade, Walker3 hr
Sep 4, 3:31 PM EDTFlash Flood WarningFFCChattooga, Floyd6 hr
Sep 4, 5:00 PM EDTSpecial Weather StatementFFCTroup60 min
Sep 4, 5:07 PM EDTFlash Flood WarningFFCTroup6 hr
Sep 4, 6:28 PM EDTFlash Flood WarningFFCMuscogee6 hr
Sep 4, 6:49 PM EDTFlood WatchFFCBanks, Barrow, Bartow, Carroll, Catoosa, Chattooga and 43 more25 hr
Sep 4, 7:00 PM EDTFlash Flood WarningFFCMarion, Schley, Sumter, Webster6 hr

Nearby

Flash Flood Warnings in Georgia, 2022Every flash flood warning in 2022

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.