Alert archive / Georgia / Flash Flood Warnings in 2005

Flash Flood Warning 13, NWS Atlanta, GA

March 31, 2005Cobb County, Georgia

NWS Atlanta, GA issued this flash flood warning at Mar 31, 2005, 10:15 AM EST for Cobb County, Georgia. It was in force for 5 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: Mar 31, 2005, 10:15 AM EST (15:15 UTC)
Expired: Mar 31, 2005, 3:00 PM EST
In force: 5 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), 67 km from the middle of the area, began a volume at 15:16 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, 3.3 hours before the alert went out and 66 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 635 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 94 m²/s²
0-3 km storm-relative helicity: 291 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

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

000 
WGUS52 KFFC 311518
FFWFFC
GAC067-312115-


BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1015 AM EST THU MAR 31 2005

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* FLASH FLOOD WARNING FOR SOPE CREEK IN...
  COBB COUNTY IN NORTH CENTRAL GEORGIA

* UNTIL 300 PM EST

* NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED SEVERAL INCHES OF
  RAIN HAS FALLEN OVER SOPE CREEK IN THE LAST FEW HOURS.

* FOR THE SOPE CREEK NEAR MARIETTA...
   MINOR FLOODING IS FORECAST.
  THE LATEST STAGE WAS 8.3 FEET AT 10 AM THURSDAY.
  FLOOD STAGE IS 12.0 FEET.
   THE FORECAST FOR THE SOPE CREEK NEAR MARIETTA... 
      THE CREEK WILL RISE ABOVE FLOOD STAGE AROUND 1 PM THURSDAY.
      THE CREEK WILL CREST NEAR 14.0 FEET AROUND 3 PM THURSDAY.
      THE CREEK WILL FALL BELOW FLOOD STAGE AROUND 5 PM THURSDAY.

LAT...LON 3396 8456 3388 8449 3398 8438 3404 8443

$$
KDF

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 31, 1:31 AM EST	Severe Thunderstorm Warning	FFC	Harris	29 min
Mar 31, 2:27 AM EST	Severe Thunderstorm Warning	FFC	Talbot	33 min
Mar 31, 2:47 AM EST	Severe Thunderstorm Warning	FFC	Upson	30 min
Mar 31, 5:17 AM EST	Severe Thunderstorm Warning	FFC	Bibb, Jones, Monroe	28 min
Mar 31, 5:40 AM EST	Severe Thunderstorm Warning	FFC	Baldwin, Jones	35 min
Mar 31, 6:04 AM EST	Severe Thunderstorm Warning	FFC	Hancock	28 min
Mar 31, 7:26 AM EST	Severe Thunderstorm Warning	FFC	Taliaferro, Warren	34 min
Mar 31, 7:33 AM EST	Severe Thunderstorm Warning	FFC	Coweta, Heard, Meriwether, Troup	27 min
Mar 31, 8:06 AM EST	Severe Thunderstorm Warning	FFC	Meriwether, Pike	24 min
Mar 31, 8:17 AM EST	Flash Flood Warning	FFC	Harris, Heard, Meriwether, Troup	3 hr
Mar 31, 8:44 AM EST	Severe Thunderstorm Warning	FFC	Upson	16 min
Mar 31, 8:48 AM EST	Severe Thunderstorm Warning	FFC	Lamar	27 min
Mar 31, 9:04 AM EST	Severe Thunderstorm Warning	FFC	Butts, Monroe	26 min
Mar 31, 9:11 AM EST	Flash Flood Warning	FFC	Fulton	6 hr
Mar 31, 9:20 AM EST	Severe Thunderstorm Warning	FFC	Crawford, Taylor	25 min
Mar 31, 9:36 AM EST	Flash Flood Warning	FFC	Barrow, Butts, Carroll, Clayton, Cobb, Coweta and 18 more	6 hr
Mar 31, 9:42 AM EST	Severe Thunderstorm Warning	FFC	Baldwin, Jones	33 min
Mar 31, 9:45 AM EST	Flash Flood Warning	FFC	DeKalb, Fulton	5 hr

Nearby

Flash Flood Warnings in Georgia, 2005 Every flash flood warning in 2005

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.