Alert archive / Georgia / Flash Flood Warnings in 2012
Flash Flood Warning 16, NWS Atlanta, GA
NWS Atlanta, GA issued this flash flood warning at Aug 2, 2012, 8:05 PM EDT for DeKalb County, Fulton County, Georgia. It was in force for 4 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
- Aug 2, 2012, 8:05 PM EDT (00:05 UTC)
- Expired
- Aug 2, 2012, 11:35 PM EDT
- In force
- 4 hr
- Issued by
- NWS Atlanta, GA
- Area
- Storm-based polygon
- Flood severity
- None
Counties DeKalb County, GA, Fulton County, GA
The radar
The Atlanta radar (KFFC), 53 km from the middle of the area, began a volume at 00:06 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, 8:20 PM EDT | FLASH FLOOD | 3 N Druid Hills, GA | SOCIAL MEDIA SITES PROVIDED VIDEO OF FLASH FLOODING IN THE NORTH DRUID HILLS AREA. VIDEOS SHOW STREAMS OVER FLOWING...ROADS COVERED IN EXCESS OF TWO FEET OF WATER ALONG WITH FLOODED YARDS. |
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, 0.1 hours before the alert went out and 51 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
- 872 J/kg
- Mixed-layer CIN
- -77 J/kg
- Mixed-layer LCL
- 1131 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 107 m²/s²
- 0-3 km storm-relative helicity
- 176 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.7
The text
As transmitted, in the capitals the NWS used until 2016.
387
WGUS52 KFFC 030005
FFWFFC
GAC089-121-030600-
/O.NEW.KFFC.FF.W.0016.120803T0005Z-120803T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
805 PM EDT THU AUG 2 2012
THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A
* FLASH FLOOD WARNING FOR...
WEST CENTRAL DEKALB COUNTY IN NORTH CENTRAL GEORGIA
CENTRAL FULTON COUNTY IN NORTH CENTRAL GEORGIA
* UNTIL 200 AM EDT
* AT 801 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
FLASH FLOODING FROM A THUNDERSTORM OVER THE WARNED AREA.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BUCKHEAD.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
ADDITIONAL RAINFALL AMOUNTS IN EXCESS OF ONE INCH ARE LIKELY IN THE
WARNED AREA.
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY...THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.
IF YOU SEE SIGNIFICANT FLOODING CALL THE NATIONAL WEATHER SERVICE
TOLL FREE AT 1 8 6 6 7 6 3 4 4 6 6. YOU CAN ALSO TWEET YOUR REPORT
USING HASHTAG GAWX.
&&
LAT...LON 3382 8442 3386 8439 3386 8430 3375 8428
3376 8440
$$2 follow-up statements
626
WGUS72 KFFC 030105
FFSFFC
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
905 PM EDT THU AUG 2 2012
GAC089-121-030600-
/O.CON.KFFC.FF.W.0016.000000T0000Z-120803T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DEKALB GA-FULTON GA-
905 PM EDT THU AUG 2 2012
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 200 AM EDT FOR
CENTRAL FULTON AND WEST CENTRAL DEKALB COUNTIES...
AT 857 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETERMINED
THAT THE CONTINUED RAINFALL THREAT HAS GREATLY DIMINISHED BUT FLASH
FLOODING CONCERNS WILL CONTINUE. RADAR AND GAUGE ESTIMATES INDICATE
THAT AROUND 3 INCHES OF RAIN FELL BETWEEN LA VISTA AND MIDTOWN.
LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BUCKHEAD
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE
UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY...THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.
IF YOU SEE SIGNIFICANT FLOODING CALL THE NATIONAL WEATHER SERVICE
TOLL FREE AT 1 8 6 6 7 6 3 4 4 6 6. YOU CAN ALSO TWEET YOUR REPORT
USING HASHTAG GAWX.
&&
LAT...LON 3382 8442 3386 8439 3386 8430 3375 8428
3376 8440
$$550
WGUS72 KFFC 030335
FFSFFC
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1135 PM EDT THU AUG 2 2012
GAC089-121-030344-
/O.CAN.KFFC.FF.W.0016.000000T0000Z-120803T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DEKALB GA-FULTON GA-
1135 PM EDT THU AUG 2 2012
...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR CENTRAL FULTON AND
WEST CENTRAL DEKALB COUNTIES...
ALTHOUGH ADDITIONAL RAINFALL IS NOT EXPECTED TONIGHT AND STREAMS AND
CREEKS REMAIN WITHIN THEIR BANKS...STANDING WATER MAY REMAIN IN
LOCATIONS WHERE OVER THREE INCHES OF RAIN FELL.
IF YOU SEE SIGNIFICANT FLOODING CALL THE NATIONAL WEATHER SERVICE
TOLL FREE AT 1 8 6 6 7 6 3 4 4 6 6. YOU CAN ALSO TWEET YOUR REPORT
USING HASHTAG GAWX.
LAT...LON 3382 8442 3386 8439 3386 8430 3375 8428
3376 8440
$$The office that day
Everything else NWS Atlanta, GA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 2, 8:53 PM EDT | Special Weather Statement | FFC | Spalding | 52 min |
| Aug 3, 5:35 PM EDT | Special Weather Statement | FFC | Cobb | 40 min |
| Aug 3, 6:11 PM EDT | Special Weather Statement | FFC | Union | 34 min |
| Aug 3, 6:42 PM EDT | Special Weather Statement | FFC | DeKalb, Gwinnett | 33 min |
| Aug 3, 6:51 PM EDT | Severe Thunderstorm Warning | FFC | DeKalb, Gwinnett, Rockdale, Walton | 39 min |
| Aug 3, 7:36 PM EDT | Special Weather Statement | FFC | Fayette | 39 min |
| Aug 3, 7:44 PM EDT | Severe Thunderstorm Warning | FFC | Clayton, DeKalb, Fayette, Fulton, Henry | 46 min |
| Aug 3, 7:59 PM EDT | Special Weather Statement | FFC | Gwinnett | 46 min |
Nearby
Flash Flood Warnings in Georgia, 2012Every flash flood warning in 2012
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.