Alert archive / Georgia / Flash Flood Warnings in 2017
Flash Flood Warning 48, NWS Atlanta, GA
NWS Atlanta, GA issued this flash flood warning at Sep 11, 2017, 9:05 PM EDT for 5 counties in Georgia. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Sep 11, 2017, 9:05 PM EDT (01:05 UTC)
- Expired
- Sep 12, 2017, 3:00 AM EDT
- In force
- 6 hr
- Issued by
- NWS Atlanta, GA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Catoosa County, GA, Fannin County, GA, Gilmer County, GA, Murray County, GA, Whitfield County, GA
The radar
The Northeast Alabama radar (KHTX), 122 km from the middle of the area, began a volume at 01:08 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.
The nearest sounding before it
Nashville Metro, TN (KBNA), launched 00:00Z, 1.1 hours before the alert went out and 229 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1058 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 179 m²/s²
- 0-3 km storm-relative helicity
- 132 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
932
WGUS52 KFFC 120105
FFWFFC
GAC047-111-123-213-313-120700-
/O.NEW.KFFC.FF.W.0048.170912T0105Z-170912T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Peachtree City GA
905 PM EDT MON SEP 11 2017
The National Weather Service in Peachtree City has issued a
* Flash Flood Warning for...
Catoosa County in northwestern Georgia...
Murray County in northwestern Georgia...
Gilmer County in north central Georgia...
Whitfield County in northwestern Georgia...
Northwestern Fannin County in north central Georgia...
* Until 300 AM EDT
* At 904 PM EDT, Doppler radar indicated heavy rain across the
warned area. Rainfall amounts of 2 to 3 inches have occurred over
the last several hours. Isolated flash flooding is expected to
begin shortly.
* Some locations that will experience flooding include...
Dalton, Chatsworth, Ringgold, Ellijay, Blue Ridge, Fort Oglethorpe,
Varnell, Eton, Tunnel Hill, Cohutta, East Ellijay, Crandall, Sumac,
Jones Mill, Higdon, Gregory, Blue Spring, Cohutta Wilderness,
Epworth and Conasauga Lake.
Additional rainfall amounts of 1 to 2 inches are possible in the
warned area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
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.
If you see significant flooding call the National Weather Service
toll free at 1 8 6 6 7 6 3 4 4 6 6 or tweet us your report at
NWSATLANTA.
&&
LAT...LON 3499 8431 3484 8427 3455 8446 3456 8447
3455 8449 3457 8450 3455 8452 3455 8464
3458 8465 3460 8473 3462 8472 3461 8480
3470 8505 3472 8505 3474 8516 3477 8515
3478 8520 3485 8520 3486 8525 3499 8526
$$1 follow-up statement
790
WGUS72 KFFC 120236
FFSFFC
Flash Flood Statement
National Weather Service Peachtree City GA
1036 PM EDT MON SEP 11 2017
GAC047-111-123-213-313-120245-
/O.CAN.KFFC.FF.W.0048.000000T0000Z-170912T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Catoosa GA-Murray GA-Gilmer GA-Whitfield GA-Fannin GA-
1036 PM EDT MON SEP 11 2017
...THE FLASH FLOOD WARNING FOR CATOOSA...MURRAY...GILMER...WHITFIELD
AND NORTHWESTERN FANNIN COUNTIES IS CANCELLED...
The heavy rain has ended. Light rain continues over the area, and
additional rainfall amounts of up to 0.5 inches are still possible.
Flash flooding is no longer expected to pose a threat. Please
continue to heed any remaining road closures.
LAT...LON 3499 8431 3484 8427 3455 8446 3456 8447
3455 8449 3457 8450 3455 8452 3455 8464
3458 8465 3460 8473 3462 8472 3461 8480
3470 8505 3472 8505 3474 8516 3477 8515
3478 8520 3485 8520 3486 8525 3499 8526
$$The office that day
Everything else NWS Atlanta, GA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 11, 8:06 PM EDT | Special Weather Statement | FFC | Lamar, Monroe | 24 min |
| Sep 11, 8:15 PM EDT | Special Weather Statement | FFC | Jones, Monroe | 30 min |
| Sep 11, 8:21 PM EDT | Special Weather Statement | FFC | Putnam | 24 min |
| Sep 11, 8:41 PM EDT | Special Weather Statement | FFC | Butts | 34 min |
| Sep 11, 9:04 PM EDT | Special Weather Statement | FFC | Hancock | 26 min |
| Sep 11, 9:08 PM EDT | Special Weather Statement | FFC | Wilkes | 37 min |
| Sep 11, 9:38 PM EDT | Special Weather Statement | FFC | Jasper | 37 min |
| Sep 11, 10:56 PM EDT | Wind Advisory | FFC | Baldwin, Banks, Barrow, Bartow, Butts, Carroll and 59 more | 4 hr |
| Sep 12, 4:02 AM EDT | River Flood Warning | FFC | Carroll, Coweta, Heard | 34 hr |
| Sep 12, 4:18 AM EDT | River Flood Warning | FFC | Cobb, Douglas | 44 hr |
| Sep 12, 4:23 AM EDT | River Flood Warning | FFC | Bibb, Houston, Jones, Monroe, Twiggs | 3 days |
| Sep 12, 4:23 AM EDT | River Flood Warning | FFC | Johnson, Washington, Wilkinson | 24 hr |
| Sep 12, 8:41 AM EDT | River Flood Warning | FFC | Gwinnett | 12 hr |
Nearby
Flash Flood Warnings in Georgia, 2017Every flash flood warning in 2017
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.