Alert archive / Georgia / Flash Flood Warnings in 2022

Flash Flood Warning 38, NWS Atlanta, GA

September 4, 2022Troup County, Georgia

NWS Atlanta, GA issued this flash flood warning at Sep 4, 2022, 5:07 PM EDT for Troup County, Georgia. It was in force for 6 hr. 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
Sep 4, 2022, 5:07 PM EDT (21:07 UTC)
Expired
Sep 4, 2022, 10:53 PM EDT
In force
6 hr
Issued by
NWS Atlanta, GA
Area
Storm-based polygon
Flood severity
None

County Troup County, GA

The radar

The Atlanta radar (KFFC), 56 km from the middle of the area, began a volume at 21:09 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 4, 6:00 PM EDTFLASH FLOOD1 Sw Lagrange, GAWATER OVER ROAD AT BROWNWOOD RD AND PANTHER WAY.

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, 9.1 hours before the alert went out and 62 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.

904 
WGUS52 KFFC 042107
FFWFFC
GAC285-050315-
/O.NEW.KFFC.FF.W.0038.220904T2107Z-220905T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

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

The National Weather Service in Peachtree City has issued a

* Flash Flood Warning for...
  Central Troup County in west central Georgia...

* Until 1115 PM EDT Sunday.

* At 507 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 2.5 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.

  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...
  LaGrange, Hogansville, Hillcrest, Louise and Harrisonville.

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 3300 8514 3309 8507 3318 8500 3313 8489
      3295 8504

FLASH FLOOD...RADAR INDICATED

$$
2 follow-up statements
356 
WGUS72 KFFC 042346
FFSFFC

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

GAC285-050315-
/O.CON.KFFC.FF.W.0038.000000T0000Z-220905T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Troup GA-
746 PM EDT Sun Sep 4 2022

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1115 PM EDT THIS 
EVENING FOR CENTRAL TROUP COUNTY...

At 746 PM EDT, Doppler radar indicated thunderstorms producing heavy 
rain across the warned area. Between 1 and 2.5 inches of rain have 
fallen. Additional rainfall amounts of 1 to 2 inches are possible in 
the warned area. Flash flooding is ongoing.

HAZARD...Flash flooding caused by training of thunderstorms and
         locally heavy rainfall.

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...
  LaGrange, Hogansville, Hillcrest, Louise and Harrisonville.

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.

Stay away or be swept away. River banks and culverts can become 
unstable and unsafe.

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 3300 8514 3309 8507 3318 8500 3313 8489
      3295 8504

FLASH FLOOD...RADAR INDICATED

$$
573 
WGUS72 KFFC 050253
FFSFFC

Flash Flood Statement
National Weather Service Peachtree City GA
1053 PM EDT Sun Sep 4 2022

GAC285-050303-
/O.CAN.KFFC.FF.W.0038.000000T0000Z-220905T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Troup GA-
1053 PM EDT Sun Sep 4 2022

...FLASH FLOOD WARNING IS CANCELLED FOR CENTRAL TROUP COUNTY...

The threat for flash flooding has diminished. However, please 
continue to heed to any remaining road closures.

A Flood Watch remains in effect until 800 PM EDT Monday for portions 
of north central Georgia, northeast Georgia, northwest Georgia and 
west central Georgia.

LAT...LON 3300 8514 3309 8507 3318 8500 3313 8489
      3295 8504

$$

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, 10:30 AM EDTFlash Flood WarningFFCFloyd6 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, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.