Alert archive / Georgia / Flash Flood Warnings in 2004
Flash Flood Warning 20, NWS Atlanta, GA
NWS Atlanta, GA issued this flash flood warning at Sep 16, 2004, 4:28 PM EDT for Cobb County, Georgia. It was in force for 4 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, 4:28 PM EDT (20:28 UTC)
- Expired
- Sep 16, 2004, 8:30 PM EDT
- In force
- 4 hr
- Issued by
- NWS Atlanta, GA
- Area
- Counties, with a storm outline in the text
County Cobb County, GA
The radar
The Atlanta radar (KFFC), 62 km from the middle of the area, began a volume at 20:29 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, 8.5 hours before the alert went out and 62 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
- 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
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS52 KFFC 162030 FFWATL GAC067-170030- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE PEACHTREE CITY GA 428 PM EDT THU SEP 16 2004 THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A * FLASH FLOOD WARNING FOR... COBB COUNTY IN NORTH CENTRAL GEORGIA * UNTIL 830 PM EDT * AT 424 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAINFALL OVER COBB COUNTY. * OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WHITEWATER AND KENNESAW. EXPECT 2 TO 6 INCHES OF RAINFALL THROUGH THE EVENING. SOME CREEKS AFFECTED INCLUDE...POWDER SPRINGS CREEK...BUTTERNUT CREEK...MILL CREEK...NOSES 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 3382 8466 3387 8447 3407 8443 3404 8471 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.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 16, 10:40 AM EDT | Tornado Warning | FFC | Stewart | 35 min |
| Sep 16, 11:03 AM EDT | Severe Thunderstorm Warning | FFC | Butts, Henry | 27 min |
| Sep 16, 11:22 AM EDT | Tornado Warning | FFC | Chattahoochee, Marion | 23 min |
| Sep 16, 11:30 AM EDT | Tornado Warning | FFC | Harris, Muscogee | 15 min |
| Sep 16, 11:59 AM EDT | Tornado Warning | FFC | Stewart | 16 min |
| Sep 16, 12:13 PM EDT | Tornado Warning | FFC | Chattahoochee, Muscogee, Stewart | 17 min |
| Sep 16, 12:16 PM EDT | Tornado Warning | FFC | Marion | 29 min |
| Sep 16, 1:18 PM EDT | Tornado Warning | FFC | Meriwether, Talbot | 12 min |
| Sep 16, 1:45 PM EDT | Tornado Warning | FFC | Carroll, Haralson | 15 min |
| Sep 16, 1:47 PM EDT | Tornado Warning | FFC | Meriwether, Talbot | 13 min |
| Sep 16, 2:11 PM EDT | Tornado Warning | FFC | Haralson | 19 min |
| Sep 16, 2:26 PM EDT | Tornado Warning | FFC | Clarke, Jackson, Oconee | 34 min |
| Sep 16, 2:28 PM EDT | Tornado Warning | FFC | Floyd, Haralson, Polk | 32 min |
| Sep 16, 2:42 PM EDT | Tornado Warning | FFC | Madison, Oglethorpe | 33 min |
| Sep 16, 2:49 PM EDT | Flash Flood Warning | FFC | Coweta | 3 hr |
| Sep 16, 2:56 PM EDT | Tornado Warning | FFC | Lamar, Pike, Spalding | 34 min |
| Sep 16, 2:59 PM EDT | Flash Flood Warning | FFC | Carroll | 3 hr |
| Sep 16, 2:59 PM EDT | Tornado Warning | FFC | Madison, Oglethorpe | 31 min |
| Sep 16, 3:11 PM EDT | Flash Flood Warning | FFC | Douglas, Haralson, Paulding | 4 hr |
| Sep 16, 3:14 PM EDT | Tornado Warning | FFC | Madison, Oglethorpe | 31 min |
| Sep 16, 3:17 PM EDT | Flash Flood Warning | FFC | Meriwether, Talbot | 3 hr |
| Sep 16, 3:35 PM EDT | Tornado Warning | FFC | Pike, Upson | 25 min |
| Sep 16, 3:39 PM EDT | Tornado Warning | FFC | Monroe | 36 min |
| Sep 16, 3:45 PM EDT | Flash Flood Warning | FFC | Clayton, Fayette, Fulton | 3 hr |
| Sep 16, 3:55 PM EDT | Tornado Warning | FFC | Crawford, Upson | 35 min |
| Sep 16, 4:00 PM EDT | Tornado Warning | FFC | Lamar, Pike, Spalding | 30 min |
| Sep 16, 4:06 PM EDT | Tornado Warning | FFC | Clayton, Fayette | 24 min |
| Sep 16, 4:27 PM EDT | Tornado Warning | FFC | Lamar, Spalding | 33 min |
| Sep 16, 4:40 PM EDT | Tornado Warning | FFC | Wilkes | 35 min |
| Sep 16, 5:02 PM EDT | Flash Flood Warning | FFC | DeKalb, Henry, Lamar, Pike, Rockdale, Spalding and 1 more | 3 hr |
| Sep 16, 5:09 PM EDT | Tornado Warning | FFC | Bibb, Monroe | 36 min |
| Sep 16, 5:27 PM EDT | Flash Flood Warning | FFC | Cobb, DeKalb, Fulton | 6 hr |
| Sep 16, 5:43 PM EDT | Flash Flood Warning | FFC | Cherokee | 4 hr |
| Sep 16, 6:21 PM EDT | Flash Flood Warning | FFC | Forsyth, Gwinnett | 6 hr |
| Sep 16, 6:39 PM EDT | Flash Flood Warning | FFC | Pickens | 6 hr |
| Sep 16, 7:00 PM EDT | Flash Flood Warning | FFC | DeKalb, Fulton | 18 hr |
| Sep 16, 7:00 PM EDT | Flash Flood Warning | FFC | DeKalb, Fulton | 6 hr |
| Sep 16, 7:30 PM EDT | Flash Flood Warning | FFC | DeKalb, Fulton | 6 hr |
| Sep 16, 7:42 PM EDT | Flash Flood Warning | FFC | Bartow, Catoosa, Cherokee, Dawson, Fannin, Gilmer and 8 more | 6 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.