Alert archive / Georgia / Flash Flood Warnings in 2012
Flash Flood Warning 19, NWS Atlanta, GA
NWS Atlanta, GA issued this flash flood warning at Aug 24, 2012, 1:12 AM EDT for 4 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
- Aug 24, 2012, 1:12 AM EDT (05:12 UTC)
- Expired
- Aug 24, 2012, 7:15 AM EDT
- In force
- 6 hr
- Issued by
- NWS Atlanta, GA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Banks County, GA, Hall County, GA, Lumpkin County, GA, White County, GA
The radar
The Greer radar (KGSP), 141 km from the middle of the area, began a volume at 05:15 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
Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 5.2 hours before the alert went out and 147 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
- 516 J/kg
- Mixed-layer CIN
- -18 J/kg
- Mixed-layer LCL
- 1473 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 14 m²/s²
- 0-3 km storm-relative helicity
- 38 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
042
WGUS52 KFFC 240512
FFWFFC
GAC011-139-187-311-241115-
/O.NEW.KFFC.FF.W.0019.120824T0512Z-120824T1115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
112 AM EDT FRI AUG 24 2012
THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A
* FLASH FLOOD WARNING FOR...
NORTHEASTERN HALL COUNTY IN NORTH CENTRAL GEORGIA
SOUTHEASTERN LUMPKIN COUNTY IN NORTH CENTRAL GEORGIA
EXTREME WEST CENTRAL BANKS COUNTY IN NORTHEAST GEORGIA
SOUTHERN WHITE COUNTY IN NORTHEAST GEORGIA
* UNTIL 715 AM EDT
* AT 101 AM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS INDICATED
FLASH FLOODING FROM A THUNDERSTORM OVER THE WARNED AREA ESTIMATED TO
PRODUCE 3 TO 4 INCHES OF RAINFALL WITHIN AN HOUR.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO CLEVELAND
AND CLERMONT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...AS WELL AS HIGHWAYS AND UNDERPASSES.
ADDITIONALLY...COUNTRY ROADS AND FARMLANDS ALONG THE BANKS OF
CREEKS...STREAMS AND OTHER LOW LYING AREAS ARE SUBJECT TO FLOODING.
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 3460 8363 3456 8362 3453 8362 3451 8365
3450 8365 3446 8362 3440 8363 3441 8389
3452 8391 3461 8387
$$The office that day
Everything else NWS Atlanta, GA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 24, 12:46 AM EDT | Special Weather Statement | FFC | Hall | 44 min |
| Aug 24, 1:18 AM EDT | Severe Thunderstorm Warning | FFC | Dawson, Forsyth, Hall, Lumpkin | 42 min |
| Aug 24, 2:06 AM EDT | Special Weather Statement | FFC | Forsyth | 39 min |
| Aug 24, 2:36 AM EDT | Special Weather Statement | FFC | Gwinnett | 39 min |
| Aug 24, 4:09 PM EDT | Special Weather Statement | FFC | Union | 36 min |
| Aug 24, 4:46 PM EDT | Special Weather Statement | FFC | Union | 29 min |
| Aug 24, 4:50 PM EDT | Special Weather Statement | FFC | Fannin | 25 min |
| Aug 24, 4:55 PM EDT | Special Weather Statement | FFC | Towns | 35 min |
| Aug 24, 5:37 PM EDT | Special Weather Statement | FFC | Fannin | 23 min |
| Aug 24, 6:04 PM EDT | Special Weather Statement | FFC | Fannin | 26 min |
| Aug 24, 6:21 PM EDT | Special Weather Statement | FFC | Douglas | 24 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.