Alert archive / Georgia / Flash Flood Warnings in 2002

Flash Flood Warning 1, NWS Atlanta, GA

May 4, 2002DeKalb County, Fulton County, Georgia

NWS Atlanta, GA issued this flash flood warning at May 4, 2002, 11:58 AM EDT for DeKalb County, Fulton County, Georgia. It was in force for 2 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
May 4, 2002, 11:58 AM EDT (15:58 UTC)
Expired
May 4, 2002, 2:00 PM EDT
In force
2 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), 53 km from the middle of the area, began a volume at 15:58 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, 4.0 hours before the alert went out and 50 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 2002-05-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 429 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°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 2002-05-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 248 square meters per square second.19395878Sfc1 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
429 J/kg
Mixed-layer CIN
-54 J/kg
Mixed-layer LCL
457 m above ground
0-6 km bulk shear
65 kt
0-1 km storm-relative helicity
248 m²/s²
0-3 km storm-relative helicity
378 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.3

Open this sounding in Storm Lab

The text

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

000 
WGUS52 KFFC 041558
FFWATL
GAC089-121-041800-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1156 AM EDT SAT MAY 4 2002

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

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

* UNTIL 200 PM EDT

* AT 1152 AM EDT...THE PUBLIC REPORTED FLASH FLOODING ON PEACHTREE   
  CREEK AND NANCY CREEK DUE TO RUNOFF FROM HEAVY RAIN THIS MORNING.
  FLOODING IS EXPECTED TO CONTINUE ON THESE CREEKS THROUGH 2 PM.

* DO NOT DRIVE THROUGH STANDING WATER.


LAT...LON 3387 8443 3369 8438 3368 8415 3386 8426

The office that day

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

IssuedProductOfficeCountiesLasted
May 4, 6:24 PM EDTSevere Thunderstorm WarningFFCJones21 min
May 4, 6:57 PM EDTSevere Thunderstorm WarningFFCBibb, Twiggs48 min

Nearby

Flash Flood Warnings in Georgia, 2002Every flash flood warning in 2002

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.