Alert archive / Georgia / Flash Flood Warnings in 2014
Flash Flood Warning 17, NWS Atlanta, GA
NWS Atlanta, GA issued this flash flood warning at Jul 11, 2014, 6:39 PM EDT for Forsyth County, Fulton County, Gwinnett County, 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
- Jul 11, 2014, 6:39 PM EDT (22:39 UTC)
- Expired
- Jul 12, 2014, 12:30 AM EDT
- In force
- 6 hr
- Issued by
- NWS Atlanta, GA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Forsyth County, GA, Fulton County, GA, Gwinnett County, GA
The radar
The Atlanta radar (KFFC), 96 km from the middle of the area, began a volume at 22:40 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 12:00Z, 10.7 hours before the alert went out and 92 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
- 710 J/kg
- Mixed-layer CIN
- -46 J/kg
- Mixed-layer LCL
- 877 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- -3 m²/s²
- 0-3 km storm-relative helicity
- 34 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
949
WGUS52 KFFC 112239
FFWFFC
GAC117-121-135-120430-
/O.NEW.KFFC.FF.W.0017.140711T2239Z-140712T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
639 PM EDT FRI JUL 11 2014
THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTHERN FORSYTH COUNTY IN NORTH CENTRAL GEORGIA
NORTHEASTERN FULTON COUNTY IN NORTH CENTRAL GEORGIA
NORTHERN GWINNETT COUNTY IN NORTH CENTRAL GEORGIA
* UNTIL 1230 AM EDT
* AT 630 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
POTENTIAL FLASH FLOODING OF CREEKS DUE TO NUMEROUS THUNDERSTORMS
WITH VERY HEAVY RAIN FROM ALPHARETTA THROUGH SUWANEE TO DACULA.
THE STORMS WERE NEARLY STATIONARY OVER THE WARNED AREA. RADAR
ESTIMATES OF 2 TO 3 INCHES OF RAIN HAVE OCCURRED OVER PORTIONS OF
THE WARNED AREA. ADDITIONAL RAINFALL OF ANOTHER INCH IS POSSIBLE
BEFORE THE STORMS GRADUALLY DISSIPATE BY 800 PM EDT.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SUGAR
HILL...REST HAVEN...BUFORD...MILTON AND CUMMING.
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.
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 3421 8398 3419 8399 3419 8405 3416 8406
3410 8388 3412 8382 3400 8387 3393 8380
3406 8442 3410 8442 3413 8436 3417 8436
3419 8433 3419 8426 3424 8425
$$
162 follow-up statements
953
WGUS72 KFFC 120043
FFSFFC
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
843 PM EDT FRI JUL 11 2014
GAC117-121-135-120430-
/O.CON.KFFC.FF.W.0017.000000T0000Z-140712T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
FORSYTH GA-GWINNETT GA-FULTON GA-
843 PM EDT FRI JUL 11 2014
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1230 AM EDT FOR
NORTHEASTERN FULTON...NORTHERN GWINNETT AND SOUTHERN FORSYTH
COUNTIES...
AT 836 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THE
HEAVY RAIN EARLIER OVER THE WARNED AREA HAS DISSIPATED AND MOVED
TOWARD GAINESVILLE AND ATHENS. STORM TOTAL RAINFALL AMOUNTS OF 2 TO
3 INCHES OCCURRED FROM ALPHARETTA THROUGH SUWANEE TO DACULA.
SIGNIFICANT RISES ARE OCCURRING ON CREEKS IN THE WARNED AREA AT THIS
TIME.
THE FLASH FLOOD WARNING WILL CONTINUE UNTIL THEY CREST AND BEGIN TO
RECEDE LATER THIS EVENING.
LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO MILTON AND
SUWANEE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE
UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
IF YOU SEE SIGNIFICANT FLOODING CALL THE NATIONAL WEATHER SERVICE
TOLL FREE AT 1 8 6 6 7 6 3 4 4 6 6. YOU CAN ALSO TWEET YOUR REPORT
USING HASHTAG GAWX.
&&
LAT...LON 3421 8398 3419 8399 3419 8405 3416 8406
3410 8388 3412 8382 3400 8387 3393 8380
3406 8442 3410 8442 3413 8436 3417 8436
3419 8433 3419 8426 3424 8425
$$
16937
WGUS72 KFFC 120237
FFSFFC
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1037 PM EDT FRI JUL 11 2014
GAC117-121-135-120430-
/O.CON.KFFC.FF.W.0017.000000T0000Z-140712T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
FORSYTH GA-GWINNETT GA-FULTON GA-
1037 PM EDT FRI JUL 11 2014
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1230 AM EDT FOR
NORTHEASTERN FULTON...NORTHERN GWINNETT AND SOUTHERN FORSYTH
COUNTIES...
AT 1025 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS WITH HEAVY RAIN HAVE RETURNED TO THE EASTERN PORTION
OF THE WARNED AREA IN GWINNETT COUNTY. THE STORMS WERE MOVING WEST
AT 5 TO 10 MPH AND MAY COVER A LARGE PORTION OF THE WARNED AREA
WITH RAIN AGAIN. RAINFALL AMOUNTS UP TO AN INCH WILL BE POSSIBLE IN
ADDITION TO THE 2 TO 3 INCHES WHICH OCCURRED EARLIER THIS EVENING.
MOST OF THE SMALL CREEKS IN THE WARNED AREA WERE BEGINNING TO
RECEDE. HOWEVER...THE GROUND IS SATURATED AND THE ADDITIONAL RAIN
MAY CAUSE SOME FLOODING PROBLEMS. ALSO THE CHATTAHOOCHEE RIVER HAS
RISEN TO NEAR BANKFULL IN THE NORCROSS AREA WHICH MAY BACK UP SOME
DRAINAGE TRIBUTARIES. THE FLASH FLOOD WARNING WILL CONTINUE.
LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO MOUNTAIN
PARK...SUGAR HILL...BUFORD...MILTON...ALPHARETTA AND CUMMING.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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 3421 8398 3419 8399 3419 8405 3416 8406
3410 8388 3412 8382 3400 8387 3393 8380
3406 8442 3410 8442 3413 8436 3417 8436
3419 8433 3419 8426 3424 8425
$$
16The office that day
Everything else NWS Atlanta, GA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 10, 9:06 PM EDT | Special Weather Statement | FFC | Floyd | 39 min |
| Jul 10, 9:57 PM EDT | Special Weather Statement | FFC | Floyd | 63 min |
| Jul 10, 10:15 PM EDT | Flash Flood Warning | FFC | Floyd | 6 hr |
| Jul 10, 10:33 PM EDT | Special Weather Statement | FFC | Heard | 42 min |
| Jul 10, 11:04 PM EDT | Special Weather Statement | FFC | White | 41 min |
| Jul 11, 12:00 AM EDT | Special Weather Statement | FFC | Lumpkin | 30 min |
| Jul 11, 2:47 PM EDT | Special Weather Statement | FFC | Clayton, Fayette | 28 min |
| Jul 11, 2:52 PM EDT | Special Weather Statement | FFC | Meriwether, Troup | 38 min |
| Jul 11, 3:25 PM EDT | Special Weather Statement | FFC | Fayette, Spalding | 35 min |
| Jul 11, 3:28 PM EDT | Special Weather Statement | FFC | Carroll, Douglas | 32 min |
| Jul 11, 4:05 PM EDT | Special Weather Statement | FFC | Douglas | 25 min |
| Jul 11, 4:30 PM EDT | Special Weather Statement | FFC | Cobb, Douglas, Fulton, Paulding | 30 min |
| Jul 11, 4:51 PM EDT | Special Weather Statement | FFC | Cherokee | 24 min |
| Jul 11, 5:02 PM EDT | Special Weather Statement | FFC | Cobb, Douglas, Fulton, Paulding | 28 min |
| Jul 11, 5:32 PM EDT | Special Weather Statement | FFC | Cobb | 28 min |
| Jul 11, 6:01 PM EDT | Special Weather Statement | FFC | Cherokee | 29 min |
| Jul 11, 6:23 PM EDT | Special Weather Statement | FFC | Laurens, Treutlen, Wheeler | 37 min |
| Jul 11, 7:30 PM EDT | Special Weather Statement | FFC | Barrow | 30 min |
Nearby
Flash Flood Warnings in Georgia, 2014Every flash flood warning in 2014
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.