Alert archive / Georgia / Flash Flood Warnings in 1992

Flash Flood Warning 22, NWS Atlanta, GA

December 17, 1992Clayton County, DeKalb County, Fulton County, Georgia

NWS Atlanta, GA issued this flash flood warning at Dec 17, 1992, 7:37 AM EST for Clayton County, DeKalb County, Fulton County, Georgia. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Dec 17, 1992, 7:37 AM EST (12:37 UTC)
Expired
Dec 17, 1992, 11:00 AM EST
In force
3 hr
Issued by
NWS Atlanta, GA
Area
Whole counties

Counties Clayton County, GA, DeKalb County, GA, Fulton County, GA

The nearest sounding before it

Athens Municipal, GA (KAHN), launched 12:00Z, 0.6 hours before the alert went out and 101 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, Athens Municipal, GA at 12:00Z on 1992-12-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Athens Municipal, GA at 12:00Z on 1992-12-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 111 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
569 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
111 m²/s²
0-3 km storm-relative helicity
289 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 16, 10:11 PM ESTFlash Flood WarningFFCClayton, DeKalb, Fulton5 hr
Dec 17, 4:20 AM ESTFlash Flood WarningFFCHabersham55 min
Dec 17, 7:37 AM ESTFlash Flood WarningFFCCobb3 hr

Nearby

Flash Flood Warnings in Georgia, 1992Every flash flood warning in 1992

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.