Alert archive / Georgia / Flash Flood Warnings in 2021

Flash Flood Warning 15, NWS Tallahassee, FL

July 7, 2021Brooks County, Lowndes County, Georgia; Madison County, Florida

NWS Tallahassee, FL issued this flash flood warning at Jul 7, 2021, 1:43 PM EDT for Brooks County, Lowndes County, Georgia; Madison County, Florida. It was in force for 5 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: Jul 7, 2021, 1:43 PM EDT (17:43 UTC)
Expired: Jul 7, 2021, 6:17 PM EDT
In force: 5 hr
Issued by: NWS Tallahassee, FL
Area: Storm-based polygon
Flood severity: None

Counties Madison County, FL, Brooks County, GA, Lowndes County, GA

The radar

The Moody AFB radar (KVAX), 45 km from the middle of the area, began a volume at 17:45 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

Time	Report	Where	Remark
Jul 7, 3:00 PM EDT	FLASH FLOOD	Clyattville, GA	FLASH FLOODING REPORTED IN SOUTHERN LOWNDES COUNTY WITH A FEW DIRT ROADS FLOODED OR WASHED OUT.
Jul 7, 3:59 PM EDT	FLASH FLOOD	1 Ese Lake Park, GA	US-41 SOUTH OF LAKE PARK, GA IS BEING CLOSED.

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, 5.7 hours before the alert went out and 95 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 457 J/kg
Mixed-layer CIN: -28 J/kg
Mixed-layer LCL: 745 m above ground
0-6 km bulk shear: 4 kt
0-1 km storm-relative helicity: -21 m²/s²
0-3 km storm-relative helicity: -14 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

759 
WGUS52 KTAE 071743
FFWTAE
FLC079-GAC027-185-072145-
/O.NEW.KTAE.FF.W.0015.210707T1743Z-210707T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Tallahassee FL
143 PM EDT Wed Jul 7 2021

The National Weather Service in Tallahassee has issued a

* Flash Flood Warning for...
  Northeastern Madison County in Big Bend Florida...
  Southeastern Brooks County in south central Georgia...
  Southwestern Lowndes County in south central Georgia...

* Until 545 PM EDT.

* At 143 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1.5 and 3 inches of 
  rain have fallen in the last 1 Hour. 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...
  Lake Park, Madison, Valdosta, Dasher, Pinetta, Clyattville, Cherry 
  Lake, Hanson, Nankin, I-75 At Exit 11, I-75 At Exit 5, Kinderlou, 
  Twin Lakes, Valdosta Regional Airport and Hamburg.

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.

&&

LAT...LON 3065 8355 3074 8348 3081 8344 3082 8339
      3079 8313 3062 8314 3063 8329 3062 8327
      3059 8326 3055 8326 3052 8324 3047 8324
      3046 8322 3044 8322 3047 8329 3049 8356
      3056 8361

FLASH FLOOD...RADAR INDICATED

$$

EB

2 follow-up statements

673 
WGUS52 KTAE 071906
FFWTAE
FLC079-GAC027-185-072245-
/O.EXT.KTAE.FF.W.0015.000000T0000Z-210707T2245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Tallahassee FL
306 PM EDT Wed Jul 7 2021

The National Weather Service in Tallahassee has extended the

* Flash Flood Warning for...
  Northeastern Madison County in Big Bend Florida...
  Southeastern Brooks County in south central Georgia...
  Southwestern Lowndes County in south central Georgia...

* Until 645 PM EDT.

* At 306 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1.5 and 3 inches of 
  rain have fallen in the last 1 Hour. Additional rainfall amounts 
  of 1 to 3 inches are possible in the warned area. Flash flooding 
  is ongoing or expected to begin shortly.

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

  SOURCE...Radar.

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

* Some locations that will experience flash flooding include...
  Lake Park, Madison, Valdosta, Dasher, Pinetta, Clyattville, Cherry 
  Lake, Hanson, Nankin, I-75 At Exit 11, I-75 At Exit 5, Kinderlou, 
  Twin Lakes, Valdosta Regional Airport and Hamburg.

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.

&&

LAT...LON 3065 8355 3074 8348 3081 8344 3082 8339
      3079 8313 3062 8314 3063 8329 3062 8327
      3059 8326 3055 8326 3052 8324 3047 8324
      3046 8322 3044 8322 3047 8329 3049 8356
      3056 8361

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE

$$

881 
WGUS72 KTAE 072217
FFSTAE

Flash Flood Statement
National Weather Service Tallahassee FL
617 PM EDT Wed Jul 7 2021

FLC079-GAC027-185-072227-
/O.CAN.KTAE.FF.W.0015.000000T0000Z-210707T2245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Madison FL-Brooks GA-Lowndes GA-
617 PM EDT Wed Jul 7 2021

...FLASH FLOOD WARNING IS CANCELLED FOR NORTHEASTERN MADISON, 
SOUTHEASTERN BROOKS AND SOUTHWESTERN LOWNDES COUNTIES...

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

LAT...LON 3065 8355 3074 8348 3081 8344 3082 8339
      3079 8313 3062 8314 3063 8329 3062 8327
      3059 8326 3055 8326 3052 8324 3047 8324
      3046 8322 3044 8322 3047 8329 3049 8356
      3056 8361

$$

EB

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 7, 9:36 AM EDT	Special Weather Statement	TAE	Grady, Thomas	54 min
Jul 7, 10:40 AM EDT	Special Weather Statement	TAE	Berrien, Colquitt, Cook, Tift, Worth	80 min
Jul 7, 11:27 AM EDT	Special Weather Statement	TAE	Decatur, Seminole	63 min
Jul 7, 12:19 PM EDT	Wind Advisory	TAE	Ben Hill, Berrien, Colquitt, Cook, Irwin, Thomas and 1 more	14 hr
Jul 7, 1:01 PM EDT	Special Weather Statement	TAE	Lee, Turner, Worth	59 min
Jul 7, 1:17 PM EDT	Special Weather Statement	TAE	Calhoun, Clay, Early, Quitman	88 min
Jul 7, 2:59 PM EDT	Flash Flood Warning	TAE	Berrien, Brooks, Cook, Lanier, Lowndes	3 hr
Jul 7, 6:19 PM EDT	Areal Flood Warning	TAE	Berrien, Brooks, Cook, Lanier, Lowndes	6 hr
Jul 6, 9:51 PM EDT	Special Marine Warning	TAE		54 min
Jul 6, 9:52 PM EDT	Special Weather Statement	TAE	Bay, Calhoun, Washington	53 min
Jul 7, 4:33 AM EDT	Areal Flood Warning	TAE	Dixie, Lafayette, Taylor	12 hr
Jul 7, 9:43 AM EDT	Flash Flood Warning	TAE	Dixie, Taylor	4 hr
Jul 7, 11:59 AM EDT	Flash Flood Warning	TAE	Lafayette, Madison, Taylor	4 hr
Jul 7, 4:27 PM EDT	Areal Flood Warning	TAE	Dixie, Jefferson, Lafayette, Madison, Taylor	6 hr

Nearby

Flash Flood Warnings in Georgia, 2021 Flash Flood Warnings in Florida, 2021 Every 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.