Alert archive / Georgia / Flash Flood Warnings in 2020
Flash Flood Warning 65, NWS Atlanta, GA
NWS Atlanta, GA issued this flash flood warning at Oct 10, 2020, 10:36 PM EDT for 8 counties in Georgia. It was in force for 6 hr. 10 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
- Oct 10, 2020, 10:36 PM EDT (02:36 UTC)
- Expired
- Oct 11, 2020, 4:45 AM EDT
- In force
- 6 hr
- Issued by
- NWS Atlanta, GA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Banks County, GA, Barrow County, GA, Dawson County, GA, Forsyth County, GA, Gwinnett County, GA, Hall County, GA, Jackson County, GA, Lumpkin County, GA
The radar
The Atlanta radar (KFFC), 113 km from the middle of the area, began a volume at 02:36 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 |
|---|---|---|---|
| Oct 10, 11:16 PM EDT | FLASH FLOOD | 1 Nnw Lumpkin, GA | EMERGENCY MANAGER REPORTS ROBS WAY CLOSED DUE TO FLOODING. |
| Oct 10, 11:16 PM EDT | FLASH FLOOD | 1 Wnw Dougherty, GA | EMERGENCY MANAGER REPORTS THOMPSON ROAD CLOSED AT 2 LOCATIONS AND HUGH STOWERS ROAD CLOSED. |
| Oct 10, 11:16 PM EDT | FLASH FLOOD | Dawsonville, GA | EMERGENCY MANANGER REPORTS ROADS CLOSED DUE TO FLOODING ALONG FLAT CREEK RD, JACK HEARD RD, AND MAPLE STREET SOUTH. |
| Oct 11, 12:10 AM EDT | FLASH FLOOD | 6 W Lula, GA | B CLARK ROAD WAS WASHED OUT BY FLASH FLOODING. |
| Oct 11, 12:15 AM EDT | FLASH FLOOD | 1 Ssw Lula, GA | VICTORIA LANE WAS WASHED OUT. |
| Oct 11, 12:15 AM EDT | FLASH FLOOD | 4 Nnw Lula, GA | A PORTION OF BELTON BRIDGE ROAD WAS DAMAGED FROM FLASH FLOODING AND CLOSED. |
| Oct 11, 12:24 AM EDT | FLASH FLOOD | 3 Sse Gillsville, GA | EMERGENCY MANAGER REPORTS DIAMOND HILL CHURCH ROAD CLOSED DUE TO FLOODING. |
| Oct 11, 12:25 AM EDT | FLASH FLOOD | 2 Nw Gillsville, GA | HENSLEY ROAD WAS WASHED OUT AT CANDLER CREEK. |
| Oct 11, 12:25 AM EDT | FLASH FLOOD | 3 E Clermont, GA | PITTS CREEK WASHED OUT A PORTION OF FORRESTER ROAD. |
| Oct 11, 12:25 AM EDT | FLASH FLOOD | 4 Ese Clermont, GA | GARNER CREEK FLOODED AND CLOSED PERSIMMON TREE ROAD. |
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, 2.6 hours before the alert went out and 110 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
- 1465 J/kg
- Mixed-layer CIN
- -533 J/kg
- Mixed-layer LCL
- 1573 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 221 m²/s²
- 0-3 km storm-relative helicity
- 368 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
The text
As transmitted.
961
WGUS52 KFFC 110236
FFWFFC
GAC011-013-085-117-135-139-157-187-110845-
/O.NEW.KFFC.FF.W.0065.201011T0236Z-201011T0845Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Peachtree City GA
1036 PM EDT Sat Oct 10 2020
The National Weather Service in Peachtree City has issued a
* Flash Flood Warning for...
Western Barrow County in north central Georgia...
Southeastern Dawson County in north central Georgia...
Forsyth County in north central Georgia...
Northeastern Gwinnett County in north central Georgia...
Hall County in north central Georgia...
Southeastern Lumpkin County in north central Georgia...
West Central Banks County in northeastern Georgia...
Northwestern Jackson County in northeastern Georgia...
* Until 445 AM EDT Sunday.
* At 1036 PM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1 and 3 inches of rain
have fallen. 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...
Gainesville, Winder, Jefferson, Cumming, Dawsonville, Braselton,
Auburn, Flowery Branch, Dacula, Oakwood, Lula, Hoschton, Clermont,
Pendergrass, Carl, Gillsville, Talmo, Dougherty, Candler and
Oscarville.
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 3440 8425 3447 8400 3451 8382 3450 8367
3448 8365 3429 8362 3409 8361 3391 8377
3393 8380 3391 8382 3391 8395 3409 8386
3421 8413 3419 8426
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...0.5-2 INCHES IN 3 HOURS
$$1 follow-up statement
792
WGUS72 KFFC 110843
FFSFFC
Flash Flood Statement
National Weather Service Peachtree City GA
443 AM EDT Sun Oct 11 2020
GAC011-013-085-117-135-139-157-187-110853-
/O.EXP.KFFC.FF.W.0065.000000T0000Z-201011T0845Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Banks GA-Barrow GA-Dawson GA-Forsyth GA-Gwinnett GA-Hall GA-Jackson
GA-Lumpkin GA-
443 AM EDT Sun Oct 11 2020
...FLASH FLOOD WARNING WILL EXPIRE AT 445 AM EDT EARLY THIS MORNING
FOR WESTERN BARROW, SOUTHEASTERN DAWSON, FORSYTH, NORTHEASTERN
GWINNETT, HALL, SOUTHEASTERN LUMPKIN, WEST CENTRAL BANKS AND
NORTHWESTERN JACKSON COUNTIES...
The heavy rain has ended. Please continue to heed remaining road
closures. Water is still rising, in some cases rapidly, in rivers,
creeks, and streams in this area.
LAT...LON 3440 8425 3447 8400 3451 8382 3450 8367
3448 8365 3429 8362 3409 8361 3391 8377
3393 8380 3391 8382 3391 8395 3409 8386
3421 8413 3419 8426
$$The office that day
Everything else NWS Atlanta, GA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 10, 8:00 PM EDT | Special Weather Statement | FFC | Fulton | 30 min |
| Oct 10, 8:06 PM EDT | Tornado Warning | FFC | DeKalb | 24 min |
| Oct 10, 8:33 PM EDT | Tornado Warning | FFC | DeKalb, Gwinnett | 27 min |
| Oct 10, 8:36 PM EDT | Special Weather Statement | FFC | Rockdale | 24 min |
| Oct 10, 8:55 PM EDT | Flash Flood Warning | FFC | Clayton, Cobb, DeKalb, Fulton | 6 hr |
| Oct 10, 8:59 PM EDT | Special Weather Statement | FFC | Clayton | 31 min |
| Oct 10, 9:32 PM EDT | River Flood Warning | FFC | DeKalb | 7 hr |
| Oct 10, 9:44 PM EDT | River Flood Warning | FFC | Fulton | 4 hr |
| Oct 10, 9:46 PM EDT | Special Weather Statement | FFC | Barrow | 29 min |
| Oct 10, 9:53 PM EDT | Special Weather Statement | FFC | Clayton | 37 min |
| Oct 10, 10:03 PM EDT | Flash Flood Warning | FFC | Clayton, DeKalb, Forsyth, Fulton, Gwinnett, Henry and 1 more | 6 hr |
| Oct 10, 10:05 PM EDT | River Flood Warning | FFC | Cobb | 6 hr |
| Oct 10, 10:08 PM EDT | River Flood Warning | FFC | DeKalb | 21 days |
| Oct 10, 10:12 PM EDT | River Flood Warning | FFC | DeKalb, Fulton | 21 days |
| Oct 10, 10:13 PM EDT | River Flood Warning | FFC | DeKalb, Fulton | 32 hr |
| Oct 10, 10:15 PM EDT | River Flood Warning | FFC | DeKalb | 4 hr |
| Oct 10, 10:18 PM EDT | River Flood Warning | FFC | Fulton, Gwinnett | 12 hr |
| Oct 10, 10:23 PM EDT | River Flood Warning | FFC | Forsyth, Fulton | 50 hr |
| Oct 10, 10:25 PM EDT | River Flood Warning | FFC | Fulton | 60 min |
| Oct 10, 10:28 PM EDT | River Flood Warning | FFC | DeKalb, Fulton | 7 hr |
| Oct 10, 10:43 PM EDT | River Flood Warning | FFC | DeKalb | 2 hr |
| Oct 10, 10:54 PM EDT | River Flood Warning | FFC | DeKalb, Fulton | 4 hr |
| Oct 10, 10:56 PM EDT | River Flood Warning | FFC | Cobb, Fulton | 28 hr |
| Oct 10, 10:58 PM EDT | River Flood Warning | FFC | Cobb, Fulton | 24 hr |
| Oct 10, 10:58 PM EDT | River Flood Warning | FFC | DeKalb | 3 hr |
| Oct 10, 11:01 PM EDT | River Flood Warning | FFC | Fulton | 20 hr |
| Oct 10, 11:06 PM EDT | River Flood Warning | FFC | DeKalb | 2 hr |
| Oct 10, 11:12 PM EDT | River Flood Warning | FFC | Cobb, Fulton | 26 hr |
| Oct 10, 11:23 PM EDT | River Flood Warning | FFC | Forsyth | 5 hr |
| Oct 10, 11:26 PM EDT | River Flood Warning | FFC | Gwinnett | 23 hr |
| Oct 10, 11:31 PM EDT | River Flood Warning | FFC | Carroll, Coweta, Heard | 45 hr |
| Oct 10, 11:39 PM EDT | River Flood Warning | FFC | Gwinnett | 3 hr |
| Oct 10, 11:40 PM EDT | River Flood Warning | FFC | Gwinnett | 4 hr |
| Oct 11, 12:03 AM EDT | River Flood Warning | FFC | Gwinnett | 21 days |
| Oct 11, 12:16 AM EDT | River Flood Warning | FFC | Fulton, Gwinnett | 25 hr |
| Oct 11, 12:19 AM EDT | River Flood Warning | FFC | Fulton | 16 hr |
| Oct 11, 12:20 AM EDT | River Flood Warning | FFC | Forsyth | 20 hr |
| Oct 11, 12:22 AM EDT | River Flood Warning | FFC | Dawson, Forsyth | 15 hr |
| Oct 11, 12:23 AM EDT | River Flood Warning | FFC | DeKalb | 4 hr |
| Oct 11, 12:47 AM EDT | Special Weather Statement | FFC | White | 58 min |
| Oct 11, 1:05 AM EDT | River Flood Warning | FFC | Fulton | 21 days |
| Oct 11, 1:25 AM EDT | River Flood Warning | FFC | Cobb | 116 min |
| Oct 11, 1:41 AM EDT | River Flood Warning | FFC | Dawson | 9 hr |
| Oct 11, 1:51 AM EDT | Flash Flood Warning | FFC | White | 6 hr |
| Oct 11, 2:01 AM EDT | River Flood Warning | FFC | Coweta | 24 min |
| Oct 11, 2:06 AM EDT | River Flood Warning | FFC | Hall, White | 21 days |
| Oct 11, 2:19 AM EDT | River Flood Warning | FFC | Fulton | 21 days |
| Oct 11, 2:22 AM EDT | River Flood Warning | FFC | Gwinnett, Walton | 21 days |
| Oct 11, 2:53 AM EDT | River Flood Warning | FFC | Cobb, Fulton | 19 hr |
| Oct 11, 2:57 AM EDT | River Flood Warning | FFC | DeKalb, Fulton | 2 hr |
| Oct 11, 3:01 AM EDT | River Flood Warning | FFC | DeKalb | 12 hr |
| Oct 11, 3:07 AM EDT | Areal Flood Warning | FFC | Banks, Barrow, Cherokee, Clayton, Cobb, Dawson and 11 more | 3 hr |
| Oct 11, 4:34 AM EDT | River Flood Warning | FFC | Cherokee | 12 hr |
| Oct 11, 4:37 AM EDT | River Flood Warning | FFC | DeKalb | 21 days |
| Oct 11, 6:42 AM EDT | River Flood Warning | FFC | DeKalb, Rockdale | 30 hr |
| Oct 11, 7:03 AM EDT | River Flood Warning | FFC | Coweta, Fayette, Spalding | 18 hr |
| Oct 11, 11:25 AM EDT | River Flood Warning | FFC | Cobb | 10 hr |
| Oct 11, 3:10 PM EDT | River Flood Warning | FFC | Clayton, Fayette, Spalding | 18 hr |
| Oct 11, 3:10 PM EDT | River Flood Warning | FFC | Cherokee | 14 hr |
| Oct 11, 3:10 PM EDT | River Flood Warning | FFC | DeKalb, Rockdale | 2 hr |
| Oct 11, 3:10 PM EDT | River Flood Warning | FFC | Barrow, Jackson | 15 hr |
| Oct 11, 3:10 PM EDT | River Flood Warning | FFC | Newton, Rockdale | 33 hr |
| Oct 11, 7:07 PM EDT | River Flood Warning | FFC | Fayette, Spalding | 39 hr |
| Oct 11, 7:12 PM EDT | River Flood Warning | FFC | Fulton | 18 hr |
| Oct 11, 7:29 PM EDT | River Flood Warning | FFC | DeKalb, Gwinnett | 8 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.