Alert archive / Georgia / Flash Flood Warnings in 2021
Flash Flood Warning 35, NWS Tallahassee, FL
NWS Tallahassee, FL issued this flash flood warning at Sep 18, 2021, 6:42 PM EDT for Thomas 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
- Sep 18, 2021, 6:42 PM EDT (22:42 UTC)
- Expired
- Sep 18, 2021, 9:45 PM EDT
- In force
- 3 hr
- Issued by
- NWS Tallahassee, FL
- Area
- Storm-based polygon
- Flood severity
- None
County Thomas County, GA
The radar
The Tallahassee radar (KTLH), 60 km from the middle of the area, began a volume at 22:42 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 |
|---|---|---|---|
| Sep 18, 6:45 PM EDT | FLOOD | Thomasville, GA | SEVERAL VEHICLES STRANDED IN FLOOD WATERS DUE TO HEAVY RAINFALL. |
| Sep 18, 7:15 PM EDT | FLASH FLOOD | Thomasville, GA | UPDATE: THERE WERE AT LEAST 15 VEHICLES STRANDED IN FLOOD WATERS IN THOMASVILLE. OFFICERS HAD TO ENTER THE WATER TO RESCUE CITIZENS FROM STALLED VEHICLES. PICTURES POSTED ON THE THOMASVILLE POLICE DEPARTMENT FACEBOOK PAGE SHOW SIGNIFICANT STREET FLOODING WITH |
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, 10.7 hours before the alert went out and 59 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.
- Mixed-layer CAPE
- 886 J/kg
- Mixed-layer CIN
- -15 J/kg
- Mixed-layer LCL
- 714 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- -5 m²/s²
- 0-3 km storm-relative helicity
- 5 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
609
WGUS52 KTAE 182242
FFWTAE
GAC275-190145-
/O.NEW.KTAE.FF.W.0035.210918T2242Z-210919T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Tallahassee FL
642 PM EDT Sat Sep 18 2021
The National Weather Service in Tallahassee has issued a
* Flash Flood Warning for...
Central Thomas County in south central Georgia...
* Until 945 PM EDT.
* At 642 PM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 2 and 3 inches of rain
have fallen in the last 1 Hour. 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...
Thomasville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3087 8396 3087 8392 3084 8390 3080 8393
3080 8396 3081 8401 3084 8402 3086 8402
FLASH FLOOD...RADAR INDICATED
$$1 follow-up statement
637
WGUS72 KTAE 190142
FFSTAE
Flash Flood Statement
National Weather Service Tallahassee FL
942 PM EDT Sat Sep 18 2021
GAC275-190152-
/O.EXP.KTAE.FF.W.0035.000000T0000Z-210919T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Thomas GA-
942 PM EDT Sat Sep 18 2021
...FLASH FLOOD WARNING WILL EXPIRE AT 945 PM EDT THIS EVENING FOR
CENTRAL THOMAS COUNTY...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
LAT...LON 3087 8396 3087 8392 3084 8390 3080 8393
3080 8396 3081 8401 3084 8402 3086 8402
$$The office that day
Everything else NWS Tallahassee, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 18, 4:38 PM EDT | Areal Flood Advisory | TAE | Calhoun, Clay, Early | 4 hr |
| Sep 18, 5:20 PM EDT | Areal Flood Advisory | TAE | Early, Seminole | 4 hr |
| Sep 18, 5:39 PM EDT | Areal Flood Advisory | TAE | Early | 4 hr |
| Sep 18, 6:30 PM EDT | Areal Flood Advisory | TAE | Thomas | 3 hr |
| Sep 18, 6:37 PM EDT | Areal Flood Advisory | TAE | Baker, Decatur, Grady, Miller, Mitchell, Thomas | 3 hr |
| Sep 18, 6:44 PM EDT | Flash Flood Warning | TAE | Early | 3 hr |
| Sep 18, 7:25 PM EDT | Areal Flood Advisory | TAE | Colquitt, Grady, Mitchell, Thomas | 3 hr |
| Sep 18, 7:47 PM EDT | Areal Flood Advisory | TAE | Baker, Colquitt, Early, Miller, Mitchell | 3 hr |
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.