Alert archive / Georgia / Flash Flood Warnings in 2021

Flash Flood Warning 10, NWS Tallahassee, FL

April 24, 2021Decatur County, Seminole County, Georgia

NWS Tallahassee, FL issued this flash flood warning at Apr 24, 2021, 1:49 PM EDT for Decatur County, Seminole County, Georgia. It was in force for 3 hr. 3 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
Apr 24, 2021, 1:49 PM EDT (17:49 UTC)
Expired
Apr 24, 2021, 5:00 PM EDT
In force
3 hr
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon
Flood severity
None

Counties Decatur County, GA, Seminole County, GA

The radar

The Tallahassee radar (KTLH), 65 km from the middle of the area, began a volume at 17:51 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
Apr 24, 2:02 PM EDTFLASH FLOODFowlstown, GAMINOR ROAD FLOODING HAS BEEN REPORTED AT FOWLSTOWN ROAD NEAR GREEN SHADE ROAD.
Apr 24, 2:05 PM EDTFLASH FLOOD3 Wnw Laingkat, GAMINOR ROAD FLOODING HAS BEEN REPORTED AT FOWLSTOWN ROAD BY STEPHENS JENKINS ROAD.
Apr 24, 3:10 PM EDTHEAVY RAIN 7.752 Ene Seminole State Pa, GAA REPORT OF 7.75 INCHES OF RAIN SINCE 7:00 AM USING COCORAHS RAIN GAUGE.

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

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 5.8 hours before the alert went out and 67 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, Tallahassee Rgnl, FL at 12:00Z on 2021-04-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 175 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, Tallahassee Rgnl, FL at 12:00Z on 2021-04-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 447 square meters per square second.19395878Sfc1 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
175 J/kg
Mixed-layer CIN
-61 J/kg
Mixed-layer LCL
544 m above ground
0-6 km bulk shear
64 kt
0-1 km storm-relative helicity
447 m²/s²
0-3 km storm-relative helicity
570 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.7

Open this sounding in Storm Lab

The text

As transmitted.

537 
WGUS52 KTAE 241749
FFWTAE
GAC087-253-242100-
/O.NEW.KTAE.FF.W.0010.210424T1749Z-210424T2100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Tallahassee FL
149 PM EDT Sat Apr 24 2021

The National Weather Service in Tallahassee has issued a

* Flash Flood Warning for...
  Decatur County in southwestern Georgia...
  Southeastern Seminole County in southwestern Georgia...

* Until 500 PM EDT.

* At 149 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 3 and 5 inches of rain 
  have fallen in the last 2 Hours. Flash flooding is ongoing or 
  expected to begin shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Doppler radar.

  IMPACT...Flooding of small creeks and streams, urban areas,
           highways, streets and underpasses as well as other
           drainage and low lying areas.

* Some locations that will experience flash flooding include...
  Bainbridge, West Bainbridge, Attapulgus, Climax, Faceville, 
  Fowlstown, Hanover, Recovery, Reynoldsville, Laingkat, Jinks, 
  Amsterdam, Desser, Seminole State Park, Fairchild and Drakes Still.

Additional rainfall amounts of 1 to 3 inches are possible in the 
warned area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3094 8496 3097 8438 3069 8438 3071 8483
      3078 8491 3079 8491 3088 8493

FLASH FLOOD...RADAR INDICATED

$$
1 follow-up statement
679 
WGUS72 KTAE 242057
FFSTAE

Flash Flood Statement
National Weather Service Tallahassee FL
457 PM EDT Sat Apr 24 2021

GAC087-253-242107-
/O.EXP.KTAE.FF.W.0010.000000T0000Z-210424T2100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Decatur GA-Seminole GA-
457 PM EDT Sat Apr 24 2021

...FLASH FLOOD WARNING WILL EXPIRE AT 5 PM EDT THIS AFTERNOON FOR 
DECATUR AND SOUTHEASTERN SEMINOLE COUNTIES...

The heavy rain has ended. Additional flash flooding is not expected 
to pose a threat. Please continue to heed remaining road closures.

A Flash Flood Watch remains in effect until 200 AM EDT Sunday for 
portions of southeast Alabama...Panhandle Florida and Georgia.

LAT...LON 3094 8496 3097 8438 3069 8438 3071 8483
      3078 8491 3079 8491 3088 8493

$$

The office that day

Everything else NWS Tallahassee, FL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 24, 1:45 AM EDTFlash Flood WatchTAEBaker, Ben Hill, Berrien, Brooks, Calhoun, Clay and 20 more22 hr
Apr 24, 2:00 AM EDTWind AdvisoryTAEBaker, Ben Hill, Berrien, Brooks, Calhoun, Clay and 20 more18 hr
Apr 24, 8:40 AM EDTSevere Thunderstorm WarningTAEBaker, Calhoun, Clay, Dougherty, Early, Miller and 3 more95 min
Apr 24, 8:48 AM EDTTornado WarningTAEEarly, Miller27 min
Apr 24, 8:52 AM EDTTornado WarningTAECalhoun, Clay, Early53 min
Apr 24, 9:10 AM EDTTornado WarningTAEBaker, Early, Miller35 min
Apr 24, 9:28 AM EDTSevere Thunderstorm WarningTAEBaker, Colquitt, Dougherty, Lee, Mitchell, Terrell and 2 more62 min
Apr 24, 9:33 AM EDTTornado WarningTAEBaker, Dougherty, Miller, Mitchell27 min
Apr 24, 10:10 AM EDTSevere Thunderstorm WarningTAEBen Hill, Berrien, Colquitt, Cook, Irwin, Lanier and 3 more65 min
Apr 24, 11:20 AM EDTSevere Thunderstorm WarningTAEDecatur, Seminole40 min
Apr 24, 11:57 AM EDTSevere Thunderstorm WarningTAEDecatur, Grady48 min
Apr 24, 11:58 AM EDTAreal Flood AdvisoryTAEBaker, Colquitt, Decatur, Early, Grady, Miller and 3 more4 hr
Apr 24, 12:09 PM EDTFlash Flood WarningTAESeminole3 hr
Apr 24, 12:30 PM EDTSevere Thunderstorm WarningTAEGrady, Thomas30 min
Apr 24, 12:45 PM EDTSevere Thunderstorm WarningTAEDecatur, Grady30 min
Apr 24, 12:53 PM EDTSevere Thunderstorm WarningTAEBrooks, Grady, Thomas52 min
Apr 24, 1:03 PM EDTSevere Thunderstorm WarningTAEDecatur, Grady27 min
Apr 24, 1:17 PM EDTFlash Flood Warning Considerable damage threatTAEBrooks3 hr
Apr 24, 1:34 PM EDTSevere Thunderstorm WarningTAEBrooks, Lowndes41 min
Apr 24, 1:39 PM EDTSevere Thunderstorm WarningTAEBrooks, Grady, Thomas51 min
Apr 24, 2:08 PM EDTSevere Thunderstorm WarningTAELowndes37 min
Apr 24, 2:09 PM EDTTornado WarningTAEBrooks, Lowndes36 min
Apr 24, 2:38 PM EDTTornado WarningTAELowndes19 min
Apr 24, 3:39 PM EDTTornado WarningTAEEarly19 min
Apr 24, 3:49 PM EDTSevere Thunderstorm WarningTAEBaker, Calhoun, Clay, Early, Randolph56 min
Apr 24, 4:34 PM EDTSevere Thunderstorm WarningTAEBaker, Calhoun, Dougherty, Early, Miller, Mitchell41 min
Apr 24, 4:54 PM EDTAreal Flood AdvisoryTAETift111 min
Apr 24, 4:58 PM EDTSevere Thunderstorm WarningTAEBaker, Colquitt, Dougherty, Lee, Miller, Mitchell and 3 more47 min
Apr 24, 5:31 PM EDTSevere Thunderstorm WarningTAEBen Hill, Berrien, Colquitt, Cook, Irwin, Tift and 2 more44 min
Apr 24, 5:44 PM EDTSevere Thunderstorm WarningTAEColquitt, Dougherty, Mitchell, Worth31 min
Apr 24, 6:10 PM EDTSevere Thunderstorm WarningTAEBerrien, Colquitt, Cook, Irwin, Tift, Worth80 min
Apr 24, 6:12 PM EDTSpecial Weather StatementTAECalhoun, Clay, Randolph63 min
Apr 24, 6:37 PM EDTTornado WarningTAEBaker, Calhoun, Clay, Early, Terrell38 min
Apr 24, 6:41 PM EDTAreal Flood AdvisoryTAETift3 hr
Apr 24, 7:02 PM EDTTornado WarningTAECalhoun, Dougherty, Lee, Terrell12 min
Apr 24, 7:05 PM EDTSevere Thunderstorm WarningTAEBaker, Calhoun, Clay, Early, Randolph, Terrell40 min
Apr 24, 7:38 PM EDTSevere Thunderstorm WarningTAECalhoun, Dougherty, Lee, Terrell, Worth52 min
Apr 24, 7:41 PM EDTSevere Thunderstorm WarningTAEBen Hill, Berrien, Irwin, Tift19 min
Apr 24, 7:47 PM EDTSevere Thunderstorm WarningTAECalhoun, Clay, Quitman, Randolph43 min
Apr 24, 7:57 PM EDTSevere Thunderstorm WarningTAEBen Hill, Berrien, Irwin, Tift33 min

Nearby

Flash Flood Warnings in Georgia, 2021Every flash flood 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.