Alert archive / Georgia / Flash Flood Warnings in 2004

Flash Flood Warning 26, NWS Atlanta, GA

September 16, 2004DeKalb County, Fulton County, Georgia

NWS Atlanta, GA issued this flash flood warning at Sep 16, 2004, 7:00 PM EDT for DeKalb County, Fulton County, Georgia. It was in force for 18 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, 7:00 PM EDT (23:00 UTC)
Expired
Sep 17, 2004, 1:00 PM EDT
In force
18 hr
Issued by
NWS Atlanta, GA
Area
Counties, with a storm outline in the text

Counties DeKalb County, GA, Fulton County, GA

The radar

The Atlanta radar (KFFC), 60 km from the middle of the area, began a volume at 23:01 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, 11.0 hours before the alert went out and 57 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 162307
FFWATL
GAC089-121-170500-
                            
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
700 PM EDT THU SEP 16 2004

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS UPGRADED THE...

* FLASH FLOOD WARNING FOR PEACHTREE CREEK IN...
  FULTON COUNTY IN NORTH CENTRAL GEORGIA
  DEKALB COUNTY IN NORTH CENTRAL GEORGIA

* UNTIL 1 AM

* MAJOR FLOODING IS NOW EXPECTED. VERY HEAVY RAIN HAS FALLEN ACROSS
  THE AREA...WITH 3 TO 6 INCHES COMMON. THIS HAS CAUSED A RAPID RISE
  ON PEACHTREE CREEK.

* FOR THE PEACHTREE CREEK NEAR ATLANTA...
  MAJOR FLOODING IS FORECAST.
  THE LATEST STAGE WAS 19.5 FEET AT 7 PM THURSDAY.
  FLOOD STAGE IS 17.0 FEET.
   THE FORECAST FOR THE PEACHTREE CREEK NEAR ATLANTA...
      THE CREEK WILL CREST BETWEEN 20 AND 21 FEET AROUND 9 PM THURSDAY.
      THE CREEK WILL FALL BELOW FLOOD STAGE AROUND 3 AM FRIDAY.

AT 20 FEET MAJOR FLOODING BEGINS WITH HOMES FLOODED ALONG BISCAYNE ROAD
AND IN THE COLONIAL HOMES APARTMENTS. SIGNIFICANT FLOODING OF ROADS
AND SOME HOMES OCCURS ALONG THE CREEK. RESIDENTS MAY NEED TO LEAVE HOMES
AND APARTMENTS IN THE AREA. AT 21 FEET...PEACHTREE PARK APARTMENTS WILL
NEED TO BE EVACUATED.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE ROADWAY. 
THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. 
TWO FEET OF RUSHING WATER CAN CARRY AWAY MOST VEHICLES...INCLUDING 
SPORT UTILITY VEHICLES AND PICKUPS. VEHICLES CAUGHT IN RISING WATER 
SHOULD BE ABANDONED QUICKLY. MOVE TO HIGH GROUND.

A FLASH FLOOD WARNING MEANS THAT SIGNIFICANT FLOODING OF STREAMS...
CREEKS...AND ROADS IS EXPECTED. THIS MAY CAUSE SOME MODERATE TO MAJOR
INCONVENIENCES TO THE PUBLIC...AND PROPERTY DAMAGE OR THREAT TO LIFE 
IS ELEVATED.

YOU CAN REPORT SERIOUS FLOODING TO THE NATIONAL WEATHER SERVICE BY 
CALLING TOLL FREE AT 1 8 6 6 7 6 3 4 4 6 6.

LAT...LON 3393 8421 3382 8421 3378 8447 3384 8445


$$

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, 5:02 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, 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.