Alert archive / Georgia / Flash Flood Warnings in 2020
Flash Flood Warning 24, NWS Atlanta, GA
NWS Atlanta, GA issued this flash flood warning at Apr 29, 2020, 11:19 PM EDT for 5 counties in Georgia. It was in force for 5 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
- Apr 29, 2020, 11:19 PM EDT (03:19 UTC)
- Expired
- Apr 30, 2020, 4:31 AM EDT
- In force
- 5 hr
- Issued by
- NWS Atlanta, GA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Bibb County, GA, Crawford County, GA, Houston County, GA, Peach County, GA, Twiggs County, GA
The radar
The Robins AFB radar (KJGX), 33 km from the middle of the area, began a volume at 03:21 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 |
|---|---|---|---|
| Apr 30, 12:30 AM EDT | FLASH FLOOD | Byron, GA | NUMEROUS REPORTS OF FLOODING IN AND AROUND CITY OF BYRON. |
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 00:00Z, 3.3 hours before the alert went out and 104 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
- 211 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 776 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 242 m²/s²
- 0-3 km storm-relative helicity
- 226 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 4.4
The text
As transmitted.
657
WGUS52 KFFC 300319
FFWFFC
GAC021-079-153-225-289-300915-
/O.NEW.KFFC.FF.W.0024.200430T0319Z-200430T0915Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Peachtree City GA
1119 PM EDT Wed Apr 29 2020
The National Weather Service in Peachtree City has issued a
* Flash Flood Warning for...
Southeastern Bibb County in central Georgia...
West central Twiggs County in central Georgia...
Northeastern Peach County in central Georgia...
North central Houston County in central Georgia...
Southeastern Crawford County in central Georgia...
* Until 515 AM EDT.
* At 1117 PM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. One to three inches of rain has
already fallen. Flash flooding is ongoing or expected to begin
shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar indicated.
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 flooding include...
Macon, Fort Valley, Warner Robins, Centerville, Byron, Jack Brown
Estates, Rutland, Huber, Powerville, Skipperton, Lee Pope,
Franklinton and Middle Georgia Regional Airport.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
&&
LAT...LON 3285 8358 3274 8347 3252 8391 3264 8397
FLASH FLOOD...RADAR INDICATED
$$2 follow-up statements
259
WGUS72 KFFC 300435
FFSFFC
Flash Flood Statement
National Weather Service Peachtree City GA
1235 AM EDT Thu Apr 30 2020
GAC021-079-153-225-289-300915-
/O.CON.KFFC.FF.W.0024.000000T0000Z-200430T0915Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Bibb GA-Twiggs GA-Peach GA-Houston GA-Crawford GA-
1235 AM EDT Thu Apr 30 2020
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 515 AM EDT FOR
SOUTHEASTERN BIBB...WEST CENTRAL TWIGGS...NORTHEASTERN PEACH...NORTH
CENTRAL HOUSTON AND SOUTHEASTERN CRAWFORD COUNTIES...
At 1230 AM EDT, Doppler radar and automated gauges indicated heavy
rain falling across the warned area. Three to four and a half inches
of rain have fallen. Flash flooding is already occurring.
HAZARD...Flash flooding caused by heavy rain.
SOURCE...Radar and automated gauges.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other drainage
and low lying areas.
Some locations that will experience flooding include...
Macon, Fort Valley, Warner Robins, Centerville, Byron, Jack Brown
Estates, Rutland, Huber, Powerville, Skipperton, Lee Pope,
Franklinton and Middle Georgia Regional Airport.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
&&
LAT...LON 3285 8358 3274 8347 3252 8391 3264 8397
FLASH FLOOD...RADAR AND GAUGE INDICATED
EXPECTED RAINFALL... HALF AN INCH IN THE NEXT HOUR.
$$818 WGUS72 KFFC 300831 FFSFFC Flash Flood Statement National Weather Service Peachtree City GA 431 AM EDT Thu Apr 30 2020 GAC021-079-153-225-289-300841- /O.CAN.KFFC.FF.W.0024.000000T0000Z-200430T0915Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Bibb GA-Twiggs GA-Peach GA-Houston GA-Crawford GA- 431 AM EDT Thu Apr 30 2020 ...THE FLASH FLOOD WARNING FOR SOUTHEASTERN BIBB...WEST CENTRAL TWIGGS...NORTHEASTERN PEACH...NORTH CENTRAL HOUSTON AND SOUTHEASTERN CRAWFORD COUNTIES IS CANCELLED... The heavy rain has ended. Flood waters have receded. Flooding is no longer expected to pose a threat. Please continue to heed any remaining road closures. LAT...LON 3285 8358 3274 8347 3252 8391 3264 8397 $$
The office that day
Everything else NWS Atlanta, GA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 29, 8:02 PM EDT | Special Weather Statement | FFC | Hall | 28 min |
| Apr 29, 8:12 PM EDT | Special Weather Statement | FFC | Macon | 33 min |
| Apr 29, 8:47 PM EDT | Special Weather Statement | FFC | Baldwin | 28 min |
| Apr 29, 9:05 PM EDT | Special Weather Statement | FFC | Macon | 25 min |
| Apr 29, 9:28 PM EDT | Special Weather Statement | FFC | Twiggs | 32 min |
| Apr 29, 11:23 PM EDT | Special Weather Statement | FFC | Wilkinson | 37 min |
| Apr 30, 12:53 AM EDT | Special Weather Statement | FFC | Bleckley, Crisp, Dodge, Laurens, Pulaski, Wilcox | 37 min |
| Apr 30, 1:57 AM EDT | Special Weather Statement | FFC | Montgomery, Telfair, Wheeler | 33 min |
| Apr 30, 2:34 AM EDT | Special Weather Statement | FFC | Montgomery, Wheeler | 26 min |
| Apr 30, 11:21 AM EDT | River Flood Warning | FFC | Baldwin, Washington, Wilkinson | 11 hr |
Nearby
Flash Flood Warnings in Georgia, 2020Every flash flood warning in 2020
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.