Alert archive / Florida / Flash Flood Warnings in 2021

Flash Flood Warning 8, NWS Tallahassee, FL

April 24, 2021Jackson County, Washington County, Florida; Brooks County, Georgia

NWS Tallahassee, FL issued this flash flood warning at Apr 24, 2021, 12:17 PM CDT for Jackson County, Washington County, Florida; Brooks County, 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
Apr 24, 2021, 12:17 PM CDT (17:17 UTC)
Expired
Apr 24, 2021, 3:30 PM CDT
In force
3 hr
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon
Damage threat
Considerable
Flood severity
None

Counties Jackson County, FL, Washington County, FL, Brooks County, GA

The radar

The Tallahassee radar (KTLH), 60 km from the middle of the area, began a volume at 17:17 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, 1:02 PM CDTFLASH FLOODFowlstown, GAMINOR ROAD FLOODING HAS BEEN REPORTED AT FOWLSTOWN ROAD NEAR GREEN SHADE ROAD.
Apr 24, 1:05 PM CDTFLASH FLOOD3 Wnw Laingkat, GAMINOR ROAD FLOODING HAS BEEN REPORTED AT FOWLSTOWN ROAD BY STEPHENS JENKINS ROAD.

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, 5.3 hours before the alert went out and 58 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.

500 
WGUS52 KTAE 241717
FFWTAE
FLC063-133-GAC027-242030-
/O.NEW.KTAE.FF.W.0008.210424T1717Z-210424T2030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Tallahassee FL
1217 PM CDT Sat Apr 24 2021

The National Weather Service in Tallahassee has issued a

* Flash Flood Warning for...
  Jackson County in the panhandle of Florida...
  Eastern Washington County in the panhandle of Florida...
  Brooks County in south central Georgia...

* Until 330 PM CDT /430 PM EDT/.

* At 1217 PM CDT /117 PM EDT/, Emergency management reported 
  thunderstorms producing heavy rain. Several roads are flooded in 
  Jackson County. Flash flooding is already occurring.

  HAZARD...Life threatening flash flooding. Thunderstorms
           producing flash flooding.

  SOURCE...Emergency management.

  IMPACT...Life threatening flash flooding of creeks and streams,
           urban areas, highways, streets and underpasses.

* Some locations that will experience flash flooding include...
  Cairo, Thomasville, Quitman, Valdosta, Marianna, Boston, Pavo, 
  Coolidge, Whigham, Chattahoochee, Sneads, Cottondale, Grand Ridge, 
  Greenwood, Morven, Alford, Attapulgus, Barwick, Climax and Princes 
  Still.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

In hilly terrain there are hundreds of low water crossings which are 
potentially dangerous in heavy rain. Do not attempt to cross flooded 
roads. Find an alternate route.

&&

LAT...LON 3093 8497 3075 8491 3104 8374 3103 8357
      3108 8357 3103 8347 3095 8343 3090 8344
      3089 8337 3085 8335 3082 8345 3077 8345
      3075 8348 3070 8345 3064 8332 3070 8489
      3064 8543 3077 8548

FLASH FLOOD...OBSERVED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL...3-4 INCHES IN 2 HOURS 

$$
2 follow-up statements
218 
WGUS72 KTAE 241740
FFSTAE

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

GAC027-241750-
/O.CAN.KTAE.FF.W.0008.000000T0000Z-210424T2030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Brooks GA-
140 PM EDT Sat Apr 24 2021

...FLASH FLOOD WARNING IS CANCELLED FOR BROOKS COUNTY...

Flooding is no longer 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 3077 8548 3093 8497 3083 8494 3082 8494
      3080 8493 3079 8493 3077 8492 3075 8491
      3075 8490 3073 8488 3072 8487 3070 8486
      3070 8489 3064 8543

$$

FLC063-133-242030-
/O.CON.KTAE.FF.W.0008.000000T0000Z-210424T2030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Jackson FL-Washington FL-
1240 PM CDT Sat Apr 24 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 330 PM CDT THIS 
AFTERNOON FOR JACKSON AND EASTERN WASHINGTON COUNTIES...

At 1240 PM CDT, emergency management reported thunderstorms 
producing heavy rain in Several roads are flooded in Jackson County. 
Flash flooding is already occurring.

HAZARD...Life threatening flash flooding. Thunderstorms producing
         flash flooding.

SOURCE...Emergency management.

IMPACT...Life threatening flash flooding of creeks and streams,
         urban areas, highways, streets and underpasses.

Some locations that will experience flash flooding include...
  Marianna, Chattahoochee, Sneads, Cottondale, Grand Ridge, 
  Greenwood, Alford, Blue Spring, Star, Chipola Terrace, Marianna 
  Municipal A/P, Simsville, Cypress, Two Egg, Dellwood, Lovedale, 
  Buena Vista, Kynesville, Cottondale Airport and Steele City.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

In hilly terrain there are hundreds of low water crossings which are 
potentially dangerous in heavy rain. Do not attempt to cross flooded 
roads. Find an alternate route.

&&

LAT...LON 3077 8548 3093 8497 3083 8494 3082 8494
      3080 8493 3079 8493 3077 8492 3075 8491
      3075 8490 3073 8488 3072 8487 3070 8486
      3070 8489 3064 8543

FLASH FLOOD...OBSERVED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL...3-4 INCHES IN 2 HOURS 

$$
396 
WGUS72 KTAE 242027
FFSTAE

Flash Flood Statement
National Weather Service Tallahassee FL
327 PM CDT Sat Apr 24 2021

FLC063-133-242037-
/O.EXP.KTAE.FF.W.0008.000000T0000Z-210424T2030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Jackson FL-Washington FL-
327 PM CDT Sat Apr 24 2021

...FLASH FLOOD WARNING WILL EXPIRE AT 330 PM CDT THIS AFTERNOON FOR 
JACKSON AND EASTERN WASHINGTON COUNTIES...

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

A Flash Flood Watch remains in effect until 100 AM CDT Sunday for 
portions of southeast Alabama...Panhandle Florida and Georgia.

LAT...LON 3077 8548 3093 8497 3083 8494 3082 8494
      3080 8493 3079 8493 3077 8492 3075 8491
      3075 8490 3073 8488 3072 8487 3070 8486
      3070 8489 3064 8543

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 24, 12:45 AM CDTFlash Flood WatchTAEHolmes, Jackson, Walton, Washington22 hr
Apr 24, 1:00 AM CDTWind AdvisoryTAEBay, Calhoun, Dixie, Franklin, Gadsden, Gulf and 10 more18 hr
Apr 24, 6:29 AM CDTSevere Thunderstorm WarningTAEHolmes, Walton59 min
Apr 24, 8:14 AM CDTSevere Thunderstorm WarningTAEHolmes, Walton46 min
Apr 24, 8:56 AM CDTSpecial Weather StatementTAEHolmes49 min
Apr 24, 9:01 AM CDTAreal Flood AdvisoryTAEHolmes, Jackson, Walton119 min
Apr 24, 9:39 AM CDTFlash Flood WarningTAEHolmes, Jackson, Walton3 hr
Apr 24, 9:48 AM CDTSpecial Weather StatementTAEJackson42 min
Apr 24, 9:52 AM CDTSevere Thunderstorm WarningTAEJackson, Washington53 min
Apr 24, 9:57 AM CDTTornado WarningTAEJackson, Washington14 min
Apr 24, 10:20 AM CDTSevere Thunderstorm WarningTAECalhoun, Gadsden, Jackson40 min
Apr 24, 10:54 AM CDTSevere Thunderstorm WarningTAEHolmes, Walton, Washington51 min
Apr 24, 10:57 AM CDTSevere Thunderstorm WarningTAEGadsden48 min
Apr 24, 11:09 AM CDTFlash Flood WarningTAEBay, Holmes, Jackson, Walton, Washington3 hr
Apr 24, 11:25 AM CDTSpecial Weather StatementTAELeon50 min
Apr 24, 11:30 AM CDTSevere Thunderstorm WarningTAEGadsden, Jefferson, Leon30 min
Apr 24, 11:41 AM CDTRiver Flood WarningTAEWalton41 hr
Apr 24, 11:41 AM CDTSpecial Weather StatementTAEHolmes64 min
Apr 24, 11:45 AM CDTSevere Thunderstorm WarningTAEGadsden, Leon30 min
Apr 24, 11:53 AM CDTSevere Thunderstorm WarningTAEJefferson, Leon, Madison52 min
Apr 24, 12:03 PM CDTSevere Thunderstorm WarningTAEGadsden, Leon27 min
Apr 24, 12:34 PM CDTFlash Flood Warning Considerable damage threatTAEHolmes, Jackson, Walton, Washington3 hr
Apr 24, 12:34 PM CDTSevere Thunderstorm WarningTAEJefferson, Madison41 min
Apr 24, 12:39 PM CDTSevere Thunderstorm WarningTAEJefferson, Leon, Madison51 min
Apr 24, 1:09 PM CDTTornado WarningTAEJefferson, Madison36 min
Apr 24, 1:38 PM CDTTornado WarningTAEMadison19 min
Apr 24, 7:40 AM CDTSevere Thunderstorm WarningTAEBaker, Calhoun, Clay, Dougherty, Early, Miller and 3 more95 min
Apr 24, 7:48 AM CDTTornado WarningTAEEarly, Miller27 min
Apr 24, 7:52 AM CDTTornado WarningTAECalhoun, Clay, Early53 min
Apr 24, 8:10 AM CDTTornado WarningTAEBaker, Early, Miller35 min
Apr 24, 8:28 AM CDTSevere Thunderstorm WarningTAEBaker, Colquitt, Dougherty, Lee, Mitchell, Terrell and 2 more62 min
Apr 24, 8:33 AM CDTTornado WarningTAEBaker, Dougherty, Miller, Mitchell27 min
Apr 24, 9:10 AM CDTSevere Thunderstorm WarningTAEBen Hill, Berrien, Colquitt, Cook, Irwin, Lanier and 3 more65 min
Apr 24, 10:58 AM CDTAreal Flood AdvisoryTAEBaker, Colquitt, Decatur, Early, Grady, Miller and 3 more4 hr
Apr 24, 12:49 PM CDTFlash Flood WarningTAEDecatur, Seminole3 hr
Apr 24, 1:08 PM CDTSevere Thunderstorm WarningTAELowndes37 min
Apr 24, 2:39 PM CDTTornado WarningTAEEarly19 min
Apr 24, 2:49 PM CDTSevere Thunderstorm WarningTAEBaker, Calhoun, Clay, Early, Randolph56 min
Apr 24, 3:34 PM CDTSevere Thunderstorm WarningTAEBaker, Calhoun, Dougherty, Early, Miller, Mitchell41 min
Apr 24, 3:54 PM CDTAreal Flood AdvisoryTAETift111 min
Apr 24, 3:58 PM CDTSevere Thunderstorm WarningTAEBaker, Colquitt, Dougherty, Lee, Miller, Mitchell and 3 more47 min
Apr 24, 4:31 PM CDTSevere Thunderstorm WarningTAEBen Hill, Berrien, Colquitt, Cook, Irwin, Tift and 2 more44 min
Apr 24, 4:44 PM CDTSevere Thunderstorm WarningTAEColquitt, Dougherty, Mitchell, Worth31 min
Apr 24, 5:10 PM CDTSevere Thunderstorm WarningTAEBerrien, Colquitt, Cook, Irwin, Tift, Worth80 min
Apr 24, 5:12 PM CDTSpecial Weather StatementTAECalhoun, Clay, Randolph63 min
Apr 24, 5:37 PM CDTTornado WarningTAEBaker, Calhoun, Clay, Early, Terrell38 min
Apr 24, 5:41 PM CDTAreal Flood AdvisoryTAETift3 hr
Apr 24, 6:02 PM CDTTornado WarningTAECalhoun, Dougherty, Lee, Terrell12 min
Apr 24, 6:05 PM CDTSevere Thunderstorm WarningTAEBaker, Calhoun, Clay, Early, Randolph, Terrell40 min
Apr 24, 6:38 PM CDTSevere Thunderstorm WarningTAECalhoun, Dougherty, Lee, Terrell, Worth52 min
Apr 24, 6:41 PM CDTSevere Thunderstorm WarningTAEBen Hill, Berrien, Irwin, Tift19 min
Apr 24, 6:47 PM CDTSevere Thunderstorm WarningTAECalhoun, Clay, Quitman, Randolph43 min
Apr 24, 6:57 PM CDTSevere Thunderstorm WarningTAEBen Hill, Berrien, Irwin, Tift33 min

Nearby

Flash Flood Warnings in Florida, 2021Flash 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.