Alert archive / Georgia / Flash Flood Warnings in 2004

Flash Flood Warning 21, NWS Atlanta, GA

September 16, 20047 counties in Georgia

NWS Atlanta, GA issued this flash flood warning at Sep 16, 2004, 5:02 PM EDT for 7 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
Sep 16, 2004, 5:02 PM EDT (21:02 UTC)
Expired
Sep 16, 2004, 8:00 PM EDT
In force
3 hr
Issued by
NWS Atlanta, GA
Area
Counties, with a storm outline in the text

Counties DeKalb County, GA, Henry County, GA, Lamar County, GA, Pike County, GA, Rockdale County, GA, Spalding County, GA, Upson County, GA

The radar

The Atlanta radar (KFFC), 34 km from the middle of the area, began a volume at 21:05 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, 9.0 hours before the alert went out and 30 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 162103
FFWATL
GAC089-151-171-231-247-255-293-170000-

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

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  DEKALB COUNTY IN NORTH CENTRAL GEORGIA
  HENRY COUNTY IN NORTH CENTRAL GEORGIA
  ROCKDALE COUNTY IN NORTH CENTRAL GEORGIA
  LAMAR COUNTY IN WEST CENTRAL GEORGIA
  PIKE COUNTY IN WEST CENTRAL GEORGIA
  SPALDING COUNTY IN WEST CENTRAL GEORGIA
  UPSON COUNTY IN WEST CENTRAL GEORGIA

* UNTIL 800 PM EDT

* AT 454 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  FLASH FLOODING OVER THE AREA.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  ZEBULON...THOMASTON...STONE MOUNTAIN...STOCKBRIDGE...REDAN...
  PIEDMONT...MILSTEAD...MCDONOUGH...LUELLA...LOCUST GROVE...
  LITHONIA...HAMPTON...GRIFFIN...FLIPPEN...CONYERS...CHAPPEL AND
  BARNESVILLE.

EXPECT RAINFALL AMOUNTS OF 3 TO 8 INCHES TOTAL IN THIS AREA. EXPECT 
ROADS AND CREEKS TO FLOOD

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 3281 8440 3280 8418 3370 8396 3388 8417
      3327 8435

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, 2:49 PM EDTFlash Flood WarningFFCCoweta3 hr
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, 5:09 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.