Alert archive / Georgia / Flash Flood Warnings in 2004

Flash Flood Warning 15, NWS Atlanta, GA

September 16, 2004Coweta County, Georgia

NWS Atlanta, GA issued this flash flood warning at Sep 16, 2004, 2:49 PM EDT for Coweta County, Georgia. It was in force for 3 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
Sep 16, 2004, 2:49 PM EDT (18:49 UTC)
Expired
Sep 16, 2004, 5:45 PM EDT
In force
3 hr
Issued by
NWS Atlanta, GA
Area
Counties, with a storm outline in the text

County Coweta County, GA

The radar

The Atlanta radar (KFFC), 18 km from the middle of the area, began a volume at 18:48 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

TimeReportWhereRemark
Sep 16, 3:30 PM EDTFLASH FLOODNewnan, GASOME STREETS CLOSED IN NEWNAN.

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, 6.8 hours before the alert went out and 25 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-pSkew-T log-p diagram, Peachtre/Fal Fld, GA at 12:00Z on 2004-09-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 417 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Peachtre/Fal Fld, GA at 12:00Z on 2004-09-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 277 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
417 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
590 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
277 m²/s²
0-3 km storm-relative helicity
424 m²/s²
Significant tornado parameter
0.8
Supercell composite
4.2

Open this sounding in Storm Lab

The text

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

000 
WGUS52 KFFC 161850
FFWATL
GAC077-162145-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
249 PM EDT THU SEP 16 2004

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  COWETA COUNTY IN WEST CENTRAL GEORGIA

* UNTIL 545 PM EDT

* AT 242 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  FLASH FLOODING FROM A THUNDERSTORM NEAR NEWNAN...MOVING NORTH AT 60
  MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  THOMAS CROSSROADS...SARGENT...MADRAS AND CANONGATE.

SOME CREEKS AFFECTED INCLUDE...WHITE OAK...BEAR...AND SANDY CREEK.

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. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.
MOVE TO HIGHER GROUND.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.

LAT...LON 3324 8483 3325 8455 3350 8465 3343 8494

IF YOU SEE SIGNIFICANT FLOODING CALL THE NATIONAL WEATHER SERVICE
TOLL FREE AT 1 8 6 6 7 6 3 4 4 6 6.

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 16, 10:40 AM EDTTornado WarningFFCStewart35 min
Sep 16, 11:03 AM EDTSevere Thunderstorm WarningFFCButts, Henry27 min
Sep 16, 11:22 AM EDTTornado WarningFFCChattahoochee, Marion23 min
Sep 16, 11:30 AM EDTTornado WarningFFCHarris, Muscogee15 min
Sep 16, 11:59 AM EDTTornado WarningFFCStewart16 min
Sep 16, 12:13 PM EDTTornado WarningFFCChattahoochee, Muscogee, Stewart17 min
Sep 16, 12:16 PM EDTTornado WarningFFCMarion29 min
Sep 16, 1:18 PM EDTTornado WarningFFCMeriwether, Talbot12 min
Sep 16, 1:45 PM EDTTornado WarningFFCCarroll, Haralson15 min
Sep 16, 1:47 PM EDTTornado WarningFFCMeriwether, Talbot13 min
Sep 16, 2:11 PM EDTTornado WarningFFCHaralson19 min
Sep 16, 2:26 PM EDTTornado WarningFFCClarke, Jackson, Oconee34 min
Sep 16, 2:28 PM EDTTornado WarningFFCFloyd, Haralson, Polk32 min
Sep 16, 2:42 PM EDTTornado WarningFFCMadison, Oglethorpe33 min
Sep 16, 2:56 PM EDTTornado WarningFFCLamar, Pike, Spalding34 min
Sep 16, 2:59 PM EDTFlash Flood WarningFFCCarroll3 hr
Sep 16, 2:59 PM EDTTornado WarningFFCMadison, Oglethorpe31 min
Sep 16, 3:11 PM EDTFlash Flood WarningFFCDouglas, Haralson, Paulding4 hr
Sep 16, 3:14 PM EDTTornado WarningFFCMadison, Oglethorpe31 min
Sep 16, 3:17 PM EDTFlash Flood WarningFFCMeriwether, Talbot3 hr
Sep 16, 3:35 PM EDTTornado WarningFFCPike, Upson25 min
Sep 16, 3:39 PM EDTTornado WarningFFCMonroe36 min
Sep 16, 3:45 PM EDTFlash Flood WarningFFCClayton, Fayette, Fulton3 hr
Sep 16, 3:55 PM EDTTornado WarningFFCCrawford, Upson35 min
Sep 16, 4:00 PM EDTTornado WarningFFCLamar, Pike, Spalding30 min
Sep 16, 4:06 PM EDTTornado WarningFFCClayton, Fayette24 min
Sep 16, 4:27 PM EDTTornado WarningFFCLamar, Spalding33 min
Sep 16, 4:28 PM EDTFlash Flood WarningFFCCobb4 hr
Sep 16, 4:40 PM EDTTornado WarningFFCWilkes35 min
Sep 16, 5:02 PM EDTFlash Flood WarningFFCDeKalb, Henry, Lamar, Pike, Rockdale, Spalding and 1 more3 hr
Sep 16, 5:09 PM EDTTornado WarningFFCBibb, Monroe36 min
Sep 16, 5:27 PM EDTFlash Flood WarningFFCCobb, DeKalb, Fulton6 hr
Sep 16, 5:43 PM EDTFlash Flood WarningFFCCherokee4 hr
Sep 16, 6:21 PM EDTFlash Flood WarningFFCForsyth, Gwinnett6 hr
Sep 16, 6:39 PM EDTFlash Flood WarningFFCPickens6 hr
Sep 16, 7:00 PM EDTFlash Flood WarningFFCDeKalb, Fulton18 hr
Sep 16, 7:00 PM EDTFlash Flood WarningFFCDeKalb, Fulton6 hr
Sep 16, 7:30 PM EDTFlash Flood WarningFFCDeKalb, Fulton6 hr
Sep 16, 7:42 PM EDTFlash Flood WarningFFCBartow, Catoosa, Cherokee, Dawson, Fannin, Gilmer and 8 more6 hr

Nearby

Flash Flood Warnings in Georgia, 2004Every flash flood warning in 2004

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.