Alert archive / Georgia / Flash Flood Warnings in 2012
Flash Flood Warning 21, NWS Atlanta, GA
NWS Atlanta, GA issued this flash flood warning at Oct 1, 2012, 10:17 PM EDT for 4 counties in Georgia. It was in force for 3 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
- Oct 1, 2012, 10:17 PM EDT (02:17 UTC)
- Expired
- Oct 2, 2012, 1:14 AM EDT
- In force
- 3 hr
- Issued by
- NWS Atlanta, GA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Meriwether County, GA, Pike County, GA, Spalding County, GA, Upson County, GA
The radar
The Atlanta radar (KFFC), 44 km from the middle of the area, began a volume at 02:19 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, 2.3 hours before the alert went out and 43 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
- 988 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 481 m above ground
- 0-6 km bulk shear
- 60 kt
- 0-1 km storm-relative helicity
- 263 m²/s²
- 0-3 km storm-relative helicity
- 292 m²/s²
- Significant tornado parameter
- 1.8
- Supercell composite
- 6.7
The text
As transmitted, in the capitals the NWS used until 2016.
712
WGUS52 KFFC 020217
FFWFFC
GAC199-231-255-293-020815-
/O.NEW.KFFC.FF.W.0021.121002T0217Z-121002T0815Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1017 PM EDT MON OCT 1 2012
THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTHEASTERN MERIWETHER COUNTY IN WEST CENTRAL GEORGIA
PIKE COUNTY IN WEST CENTRAL GEORGIA
CENTRAL SPALDING COUNTY IN WEST CENTRAL GEORGIA
NORTHWESTERN UPSON COUNTY IN WEST CENTRAL GEORGIA
* UNTIL 415 AM EDT TUESDAY
* AT 1009 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED
FLASH FLOODING FROM HEAVY RAINFALL OVER THE WARNED AREA. DOPPLER
RADAR HAS INDICATED THAT 1 TO 2 INCHES HAVE FALLEN IN THE LAST THREE
HOURS...IN ADDITION TO 1 TO 2 INCHES THAT HAD ALREADY FALLEN EARLIER
TODAY.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WILLIAMSON
AND GRIFFIN.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE POSSIBLE IN THE
WARNED AREA.
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.
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 3307 8450 3333 8436 3333 8420 3283 8445
3285 8447 3286 8449 3287 8447 3288 8449
3285 8456 3285 8459
$$1 follow-up statement
245
WGUS72 KFFC 020514
FFSFFC
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
114 AM EDT TUE OCT 2 2012
GAC199-231-255-293-020523-
/O.CAN.KFFC.FF.W.0021.000000T0000Z-121002T0815Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SPALDING GA-PIKE GA-MERIWETHER GA-UPSON GA-
114 AM EDT TUE OCT 2 2012
...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR NORTHWESTERN
UPSON...SOUTHEASTERN MERIWETHER...PIKE AND CENTRAL SPALDING
COUNTIES...
RUNOFF FROM THE HEAVY RAIN THAT FELL MONDAY EVENING HAS SUBSIDED AND
NO LONGER POSES A THREAT OF PRODUCING FLASH FLOODING.
IF YOU SEE SIGNIFICANT FLOODING CALL THE NATIONAL WEATHER SERVICE
TOLL FREE AT 1 8 6 6 7 6 3 4 4 6 6. YOU CAN ALSO TWEET YOUR REPORT
USING HASHTAG GAWX.
LAT...LON 3307 8450 3333 8436 3333 8420 3283 8445
3285 8447 3286 8449 3287 8447 3288 8449
3285 8456 3285 8459
$$The office that day
Everything else NWS Atlanta, GA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 1, 9:23 PM EDT | Flash Flood Warning | FFC | Hall | 6 hr |
| Oct 1, 10:45 PM EDT | Special Weather Statement | FFC | DeKalb, Gwinnett | 60 min |
| Oct 1, 10:54 PM EDT | Special Weather Statement | FFC | Dade | 36 min |
| Oct 1, 10:56 PM EDT | Flash Flood Warning | FFC | DeKalb, Gwinnett | 6 hr |
| Oct 2, 1:18 AM EDT | River Flood Warning | FFC | Gwinnett | 3 hr |
| Oct 2, 1:18 AM EDT | River Flood Warning | FFC | Gwinnett | 6 hr |
| Oct 2, 2:49 AM EDT | Flash Flood Warning | FFC | White | 5 hr |
| Oct 2, 4:10 AM EDT | River Flood Warning | FFC | Gwinnett, Walton | 6 hr |
| Oct 2, 6:41 AM EDT | River Flood Warning | FFC | Gwinnett | 18 hr |
| Oct 2, 11:26 AM EDT | River Flood Warning | FFC | DeKalb, Rockdale | 8 hr |
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.