Alert archive / Georgia / Flash Flood Warnings in 2018

Flash Flood Warning 35, NWS Atlanta, GA

August 2, 20186 counties in Georgia

NWS Atlanta, GA issued this flash flood warning at Aug 2, 2018, 6:05 PM EDT for 6 counties in Georgia. It was in force for 6 hr. 4 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: Aug 2, 2018, 6:05 PM EDT (22:05 UTC)
Expired: Aug 3, 2018, 12:00 AM EDT
In force: 6 hr
Issued by: NWS Atlanta, GA
Area: Storm-based polygon
Flood severity: None

Counties Coweta County, GA, Fayette County, GA, Fulton County, GA, Meriwether County, GA, Pike County, GA, Spalding County, GA

The radar

The Atlanta radar (KFFC), 8 km from the middle of the area, began a volume at 22:07 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
Aug 2, 6:30 PM EDT	FLASH FLOOD	1 Wsw Cannongate, GA	THE WATER WAS REPORTED IN THE ROADWAY AT THE ENTRANCE OF NORTHGATE HIGH SCHOOL.
Aug 2, 6:30 PM EDT	FLASH FLOOD	2 Ese Thomas Crossroads, GA	WATER WAS REPORTED MOVING OVER THE ROADWAY AT BEAU BROOK LANE AND HIGHWAY 34.
Aug 2, 6:45 PM EDT	FLASH FLOOD	2 Ne Newnan, GA	WATER OVER THE ROAD REPORTED BY EMERGENCY MANAGER AT INTERSECTION OF ELAINE DRIVE AND ANTHONY DRIVE. ALSO NOTED PIPE DAMAGE RESULTING IN CLOSED ROADWAY ON ELDERS MILL ROAD.
Aug 2, 6:45 PM EDT	FLASH FLOOD	3 W Thomas Crossroads, GA	EMERGENCY MANAGER REPORTS WATER OVER ROADWAY AT WHITE OAK CREEK ALONG INTERNATIONAL PARK DRIVE AT WHITLOCK FIELDS.

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 12:00Z, 10.1 hours before the alert went out and 13 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: 243 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 487 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 47 m²/s²
0-3 km storm-relative helicity: 72 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

As transmitted.

855 
WGUS52 KFFC 022205
FFWFFC
GAC077-113-121-199-231-255-030400-
/O.NEW.KFFC.FF.W.0035.180802T2205Z-180803T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Peachtree City GA
605 PM EDT THU AUG 2 2018

The National Weather Service in Peachtree City has issued a

* Flash Flood Warning for...
  Southwestern Spalding County in west central Georgia...
  Northeastern Meriwether County in west central Georgia...
  Fayette County in north central Georgia...
  Northwestern Pike County in west central Georgia...
  Coweta County in west central Georgia...
  Southwestern Fulton County in north central Georgia...

* Until midnight EDT.

* At 604 PM EDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. Flash flooding is expected to
  begin shortly.

* Some locations that will experience flooding include...
  Newnan, Fayetteville, Peachtree City, Union City, Fairburn, Tyrone,
  Palmetto, Senoia, Grantville, Luthersville, Brooks, Moreland,
  Sharpsburg, Turin, Haralson, Gay, East Newnan, Chattahoochee Hill
  Country, Starrs Mill and Dunaway Gardens.

LAT...LON 3357 8481 3359 8480 3358 8446 3355 8446
      3355 8444 3354 8443 3308 8448 3309 8467
      3322 8472 3322 8485

$$

The office that day

Everything else NWS Atlanta, GA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 1, 8:09 PM EDT	Special Weather Statement	FFC	Banks, Jackson	51 min
Aug 1, 8:20 PM EDT	Severe Thunderstorm Warning	FFC	Clarke, Jackson, Oconee	40 min
Aug 1, 8:29 PM EDT	Tornado Warning	FFC	Clarke, Jackson, Madison, Oconee	46 min
Aug 1, 8:36 PM EDT	Special Weather Statement	FFC	Wilkes	24 min
Aug 1, 8:45 PM EDT	Severe Thunderstorm Warning	FFC	Wilkes	30 min
Aug 1, 9:16 PM EDT	Tornado Warning	FFC	Clarke, Madison, Oglethorpe	16 min
Aug 1, 9:31 PM EDT	Severe Thunderstorm Warning	FFC	Madison	29 min
Aug 1, 9:36 PM EDT	River Flood Warning	FFC	Forsyth, Fulton	60 hr
Aug 1, 9:55 PM EDT	Special Weather Statement	FFC	Madison	35 min
Aug 2, 11:13 AM EDT	Flash Flood Warning	FFC	Floyd	6 hr
Aug 2, 12:46 PM EDT	Special Weather Statement	FFC	Telfair	44 min
Aug 2, 1:28 PM EDT	Special Weather Statement	FFC	Montgomery, Treutlen, Wheeler	47 min
Aug 2, 1:30 PM EDT	Special Weather Statement	FFC	Toombs	45 min
Aug 2, 2:03 PM EDT	Special Weather Statement	FFC	Dodge	27 min
Aug 2, 2:25 PM EDT	Special Weather Statement	FFC	Bleckley, Dodge, Laurens	50 min
Aug 2, 2:37 PM EDT	Special Weather Statement	FFC	Montgomery, Telfair, Wheeler	38 min
Aug 2, 3:13 PM EDT	Special Weather Statement	FFC	Washington	47 min
Aug 2, 3:45 PM EDT	Special Weather Statement	FFC	Glascock, Jefferson	45 min
Aug 2, 3:56 PM EDT	Tornado Warning	FFC	Jasper, Jones, Putnam	34 min
Aug 2, 4:08 PM EDT	Tornado Warning	FFC	Butts, Jasper, Monroe	37 min
Aug 2, 4:25 PM EDT	Tornado Warning	FFC	Jasper, Putnam	35 min
Aug 2, 4:29 PM EDT	Special Weather Statement	FFC	Taliaferro, Warren	46 min
Aug 2, 4:30 PM EDT	Special Weather Statement	FFC	Jenkins	30 min
Aug 2, 4:37 PM EDT	Flash Flood Warning	FFC	Floyd	6 hr
Aug 2, 4:41 PM EDT	Tornado Warning	FFC	Butts, Jasper, Newton	34 min
Aug 2, 4:56 PM EDT	Severe Thunderstorm Warning	FFC	Jasper, Morgan, Putnam	34 min
Aug 2, 5:12 PM EDT	Severe Thunderstorm Warning	FFC	Jasper, Morgan, Newton	33 min
Aug 2, 5:22 PM EDT	Special Weather Statement	FFC	Wilkes	38 min
Aug 2, 5:35 PM EDT	Special Weather Statement	FFC	Fayette	40 min
Aug 2, 5:42 PM EDT	Special Weather Statement	FFC	Morgan	48 min
Aug 2, 7:06 PM EDT	Special Weather Statement	FFC	Clayton	54 min
Aug 2, 7:47 PM EDT	Flash Flood Warning	FFC	Clayton, DeKalb, Fayette, Fulton, Henry	6 hr

Nearby

Flash Flood Warnings in Georgia, 2018 Every flash flood warning in 2018

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.