Alert archive / Georgia / Flash Flood Warnings in 2015

Flash Flood Warning 28, NWS Atlanta, GA

December 24, 20155 counties in Georgia

NWS Atlanta, GA issued this flash flood warning at Dec 24, 2015, 8:01 AM EST for 5 counties in Georgia. It was in force for 6 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: Dec 24, 2015, 8:01 AM EST (13:01 UTC)
Expired: Dec 24, 2015, 2:00 PM EST
In force: 6 hr
Issued by: NWS Atlanta, GA
Area: Storm-based polygon
Flood severity: None

Counties Clayton County, GA, Cobb County, GA, DeKalb County, GA, Douglas County, GA, Fulton County, GA

The radar

The Atlanta radar (KFFC), 41 km from the middle of the area, began a volume at 13:04 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
Dec 24, 12:03 PM EST	FLASH FLOOD	1 E Hapeville, GA	MAJOR FLOOD OCCURING IN THE 3800 BLOCK OF NORTHSIDE DRIVE. STREET IS COMPLETELY SUBMERGED AND HOMES ARE BEING EVACUATED.

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, 1.0 hours before the alert went out and 38 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: 468 J/kg
Mixed-layer CIN: -144 J/kg
Mixed-layer LCL: 864 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 269 m²/s²
0-3 km storm-relative helicity: 321 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 8.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

311 
WGUS52 KFFC 241301
FFWFFC
GAC063-067-089-097-121-241900-
/O.NEW.KFFC.FF.W.0028.151224T1301Z-151224T1900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
801 AM EST THU DEC 24 2015

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EASTERN DOUGLAS COUNTY IN NORTH CENTRAL GEORGIA...
  NORTHWESTERN CLAYTON COUNTY IN NORTH CENTRAL GEORGIA...
  DEKALB COUNTY IN NORTH CENTRAL GEORGIA...
  SOUTHWESTERN FULTON COUNTY IN NORTH CENTRAL GEORGIA...
  SOUTHEASTERN COBB COUNTY IN NORTH CENTRAL GEORGIA...

* UNTIL 200 PM EST THURSDAY
    
* AT 758 AM EST...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN ACROSS THE ATLANTA METRO AND SURROUNDING AREAS. ONE TO
  TWO INCHES OF RAIN HAVE ALREADY FALLEN...WITH AN ADDITIONAL ONE TO
  THREE INCHES EXPECTED. DUE TO THE URBAN NATURE OF THE AREA...FLASH
  FLOODING IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  ATLANTA...DOUGLASVILLE...DECATUR...SANDY SPRINGS...SMYRNA...
  DUNWOODY...EAST POINT...FOREST PARK...COLLEGE PARK...CHAMBLEE...
  DORAVILLE...CLARKSTON...AUSTELL...HAPEVILLE...STONE MOUNTAIN...
  AVONDALE ESTATES...PINE LAKE...NORTH DECATUR...CANDLER-MCAFEE AND
  TUCKER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

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 WARNING AT
NWSATLANTA.

&&

LAT...LON 3371 8475 3386 8457 3397 8432 3385 8417
      3365 8416 3365 8422 3364 8424 3365 8425
      3365 8428 3364 8428 3364 8427 3363 8427
      3361 8441 3361 8476

$$

DJN

1 follow-up statement

218 
WGUS72 KFFC 241550
FFSFFC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1050 AM EST THU DEC 24 2015

GAC063-067-089-097-121-241900-
/O.CON.KFFC.FF.W.0028.000000T0000Z-151224T1900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DOUGLAS GA-CLAYTON GA-DEKALB GA-FULTON GA-COBB GA-
1050 AM EST THU DEC 24 2015

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 200 PM EST FOR
EASTERN DOUGLAS...NORTHWESTERN CLAYTON...DEKALB...SOUTHWESTERN FULTON
AND SOUTHEASTERN COBB COUNTIES...

AT 1047 AM EST...THE BACK EDGE OF HEAVY RAIN WILL CONTINUE TO PUSH
EAST...AWAY FROM THE ATLANTA METRO AREA. THERE WILL BE A BREAK IN
THE HEAVY RAIN FOR A COUPLE HOURS HOWEVER...SHOWERS AND
THUNDERSTORMS ARE EXPECTED TO REDEVELOP THIS AFTERNOON. DUE TO
EXCESSIVE RUNOFF AND AREA CREEKS AND STREAMS STILL RISING...THE
FLASH FLOOD WARNING WILL REMAIN IN EFFECT.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
ATLANTA...DOUGLASVILLE...DECATUR...SANDY SPRINGS...SMYRNA...
DUNWOODY...EAST POINT...FOREST PARK...COLLEGE PARK...CHAMBLEE...
DORAVILLE...CLARKSTON...AUSTELL...HAPEVILLE...STONE MOUNTAIN...
AVONDALE ESTATES...PINE LAKE...NORTH DECATUR...CANDLER-MCAFEE AND
TUCKER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

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 3371 8475 3386 8457 3397 8432 3385 8417
      3365 8416 3365 8422 3364 8424 3365 8425
      3365 8428 3364 8428 3364 8427 3363 8427
      3361 8441 3361 8476

$$

DJN

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 23, 7:14 PM EST	Special Weather Statement	FFC	Haralson, Polk	31 min
Dec 23, 8:08 PM EST	Special Weather Statement	FFC	Bartow, Cherokee	37 min
Dec 23, 9:12 PM EST	River Flood Warning	FFC	Forsyth	20 hr
Dec 23, 9:12 PM EST	River Flood Warning	FFC	Forsyth, Fulton	4 days
Dec 23, 9:32 PM EST	Special Weather Statement	FFC	Towns, Union	28 min
Dec 23, 9:41 PM EST	River Flood Warning	FFC	Montgomery, Treutlen, Wheeler	18 days
Dec 23, 9:41 PM EST	River Flood Warning	FFC	Dooly, Macon, Sumter	11 days
Dec 23, 11:26 PM EST	Areal Flood Warning	FFC	Crawford, Lamar, Monroe, Pike, Talbot, Taylor and 1 more	12 hr
Dec 24, 12:35 AM EST	Special Weather Statement	FFC	Clayton, Coweta, Fayette, Henry, Spalding	25 min
Dec 24, 12:54 AM EST	Special Weather Statement	FFC	Chattahoochee, Muscogee	51 min
Dec 24, 1:53 AM EST	Special Weather Statement	FFC	Chattahoochee, Muscogee	52 min
Dec 24, 2:29 AM EST	River Flood Warning	FFC	Chattahoochee, Muscogee	9 days
Dec 24, 2:34 AM EST	Special Weather Statement	FFC	Dade, Walker	26 min
Dec 24, 2:53 AM EST	Severe Thunderstorm Warning	FFC	Catoosa, Walker, Whitfield	37 min
Dec 24, 3:15 AM EST	Special Weather Statement	FFC	Chattahoochee, Stewart	60 min
Dec 24, 3:26 AM EST	Special Weather Statement	FFC	Bartow	64 min
Dec 24, 3:36 AM EST	Special Weather Statement	FFC	Murray	24 min
Dec 24, 3:48 AM EST	Severe Thunderstorm Warning	FFC	Stewart	28 min
Dec 24, 4:07 AM EST	River Flood Warning	FFC	Gwinnett, Walton	8 hr
Dec 24, 4:14 AM EST	Special Weather Statement	FFC	Pickens	61 min
Dec 24, 4:50 AM EST	Special Weather Statement	FFC	Haralson	25 min
Dec 24, 5:04 AM EST	Severe Thunderstorm Warning	FFC	Haralson, Paulding, Polk	41 min
Dec 24, 5:06 AM EST	Tornado Warning	FFC	Haralson, Paulding, Polk	24 min
Dec 24, 5:10 AM EST	Areal Flood Warning	FFC	Gilmer, Gordon, Pickens	6 hr
Dec 24, 5:29 AM EST	River Flood Warning	FFC	Gilmer	24 hr
Dec 24, 5:29 AM EST	River Flood Warning	FFC	DeKalb, Rockdale	53 hr
Dec 24, 5:35 AM EST	River Flood Warning	FFC	Gilmer, Pickens	24 hr
Dec 24, 5:44 AM EST	Severe Thunderstorm Warning	FFC	Bartow, Cherokee, Cobb	31 min
Dec 24, 5:54 AM EST	Areal Flood Warning	FFC	Bartow, Carroll, Haralson, Paulding, Polk	6 hr
Dec 24, 6:08 AM EST	Special Weather Statement	FFC	Chattahoochee, Muscogee	37 min
Dec 24, 6:11 AM EST	River Flood Warning	FFC	Union	24 hr
Dec 24, 6:12 AM EST	Special Weather Statement	FFC	Cherokee, Forsyth	33 min
Dec 24, 6:14 AM EST	River Flood Warning	FFC	Union	24 hr
Dec 24, 6:20 AM EST	Areal Flood Warning	FFC	Floyd, Gilmer, Gordon, Murray	6 hr
Dec 24, 6:37 AM EST	Special Weather Statement	FFC	Carroll	23 min
Dec 24, 6:39 AM EST	River Flood Warning	FFC	Gilmer	24 hr
Dec 24, 6:46 AM EST	Special Weather Statement	FFC	Forsyth	29 min
Dec 24, 6:51 AM EST	Areal Flood Warning	FFC	Bartow, Floyd	6 hr
Dec 24, 6:55 AM EST	Areal Flood Warning	FFC	Carroll, Douglas	6 hr
Dec 24, 7:01 AM EST	Special Weather Statement	FFC	Douglas	29 min
Dec 24, 7:07 AM EST	Severe Thunderstorm Warning	FFC	Dawson, Hall, White	23 min
Dec 24, 7:09 AM EST	Flash Flood Warning	FFC	Gilmer, Pickens	6 hr
Dec 24, 7:24 AM EST	Special Weather Statement	FFC	Chattahoochee, Stewart	51 min
Dec 24, 7:27 AM EST	Special Weather Statement	FFC	Fulton	33 min
Dec 24, 7:31 AM EST	Flash Flood Warning Emergency	FFC	Gilmer	6 hr
Dec 24, 7:38 AM EST	Flash Flood Warning	FFC	Carroll, Douglas	6 hr
Dec 24, 7:41 AM EST	Special Weather Statement	FFC	Cherokee, Dawson	64 min
Dec 24, 7:46 AM EST	River Flood Warning	FFC	Gilmer	13 hr
Dec 24, 8:08 AM EST	Areal Flood Warning	FFC	Chattahoochee, Muscogee, Stewart	6 hr
Dec 24, 8:10 AM EST	Special Weather Statement	FFC	Lumpkin	50 min
Dec 24, 8:11 AM EST	Special Weather Statement	FFC	Chattahoochee, Marion	34 min
Dec 24, 8:19 AM EST	Flash Flood Warning	FFC	Troup	6 hr
Dec 24, 8:23 AM EST	River Flood Warning	FFC	Bartow	24 hr
Dec 24, 8:25 AM EST	Special Weather Statement	FFC	Walton	50 min
Dec 24, 8:38 AM EST	River Flood Warning	FFC	Polk	24 hr
Dec 24, 8:44 AM EST	Flash Flood Warning	FFC	Fannin	6 hr
Dec 24, 8:44 AM EST	Flash Flood Warning	FFC	Chattahoochee	6 hr
Dec 24, 9:06 AM EST	Special Weather Statement	FFC	Marion	24 min
Dec 24, 9:28 AM EST	Special Weather Statement	FFC	DeKalb, Fulton	47 min
Dec 24, 9:36 AM EST	Areal Flood Warning	FFC	Lumpkin, Towns, Union, White	6 hr
Dec 24, 9:42 AM EST	Flash Flood Warning	FFC	Clayton, Coweta, Fayette, Fulton, Meriwether	6 hr
Dec 24, 9:45 AM EST	River Flood Warning	FFC	Carroll	58 hr
Dec 24, 9:48 AM EST	River Flood Warning	FFC	Dawson, Forsyth	26 hr
Dec 24, 9:56 AM EST	Areal Flood Warning	FFC	Cherokee, Dawson, Hall, Lumpkin, Pickens	6 hr
Dec 24, 9:56 AM EST	River Flood Warning	FFC	DeKalb	24 hr
Dec 24, 9:59 AM EST	River Flood Warning	FFC	Cherokee	30 hr
Dec 24, 10:03 AM EST	River Flood Warning	FFC	Cobb, Douglas	18 hr
Dec 24, 10:13 AM EST	Special Weather Statement	FFC	Talbot	32 min
Dec 24, 10:33 AM EST	River Flood Warning	FFC	Cherokee	36 hr
Dec 24, 10:33 AM EST	River Flood Warning	FFC	Gordon, Murray, Whitfield	7 days
Dec 24, 10:33 AM EST	River Flood Warning	FFC	Floyd, Gordon	10 days
Dec 24, 10:33 AM EST	River Flood Warning	FFC	DeKalb, Fulton	24 hr
Dec 24, 10:33 AM EST	River Flood Warning	FFC	Elbert, Madison, Oglethorpe	28 hr
Dec 24, 10:53 AM EST	River Flood Warning	FFC	Towns	31 hr
Dec 24, 11:05 AM EST	Severe Thunderstorm Warning	FFC	DeKalb, Rockdale	25 min
Dec 24, 11:11 AM EST	River Flood Warning	FFC	DeKalb, Fulton	24 hr
Dec 24, 11:35 AM EST	River Flood Warning	FFC	Haralson	27 hr
Dec 24, 11:35 AM EST	River Flood Warning	FFC	Coweta, Fayette	24 hr
Dec 24, 11:40 AM EST	River Flood Warning	FFC	Floyd	36 hr
Dec 24, 11:40 AM EST	River Flood Warning	FFC	Fayette	51 hr

Nearby

Flash Flood Warnings in Georgia, 2015 Every flash flood warning in 2015

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.