Alert archive / Georgia / Flash Flood Warnings in 1992

Flash Flood Warning 13, NWS Atlanta, GA

November 25, 1992DeKalb County, Fulton County, Georgia

NWS Atlanta, GA issued this flash flood warning at Nov 25, 1992, 9:56 AM EST for DeKalb County, Fulton County, Georgia. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued: Nov 25, 1992, 9:56 AM EST (14:56 UTC)
Expired: Nov 25, 1992, 2:00 PM EST
In force: 4 hr
Issued by: NWS Atlanta, GA
Area: Whole counties

Counties DeKalb County, GA, Fulton County, GA

The nearest sounding before it

Athens Municipal, GA (KAHN), launched 12:00Z, 2.9 hours before the alert went out and 98 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: 620 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 229 m²/s²
0-3 km storm-relative helicity: 220 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KATL 251457
FFWATL
GAC089-121-251900-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ATLANTA GA
956 AM EST WED NOV 25 1992
 
THE NATIONAL WEATHER SERVICE IN ATLANTA HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  200 PM EST
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN NORTHWEST GEORGIA
 
   ...DEKALB COUNTY...FULTON COUNTY
 
AT 952 AM EST RADAR INDICATED MODERATE RAIN ACROSS THE METROPOLITAN
ATLANTA AREA. A FEW THUNDERSTORMS WITH HEAVY RAIN ARE EMBEDDED IN THIS
AREA OF MODERATE RAIN. THE RAIN CONTINUES TO MOVE NORTHEAST AT 45 MILES
AN HOUR.
 
AT 950 AM EST THE GAGE ON PEACHTREE CREEK AT NORTHSIDE DRIVE WAS READING
16.9 FEET AND WAS CONTINUING A STEADY RISE. THE FLOOD STAGE IS 17 FEET.
THE LEVEL OF THE CREEK SHOULD RISE ABOVE FLOOD STAGE WITHIN THE NEXT
HOUR AND SHOULD CREST BETWEEN 18 AND 19 FEET BY EARLY AFTERNOON. ABOVE
18 FEET WATER BEGINS TO ENTER SOME HOMES ON HANOVER WEST DRIVE AND THE
BACK YARDS OF HOMES ON WEST NANCY CREEK ROAD BEGIN TO FLOOD. HOMES ALONG
WOODWARD WAY...ARMAND DRIVE...AND PEACHTREE BATTLE CIRCLE ARE AFFECTED
AT A STAGE OF 19 FEET.
 
PERSONS ACROSS NORTH AND WEST GEORGIA...ESPECIALLY THOSE IN FLOOD PRONE
AREAS...SHOULD CONTINUE TO REMAIN ALERT TO THE WEATHER SITUATION AND BE
PREPARED TO TAKE ACTION IF NEEDED.
 
A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT.  MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES.  DO NOT
ATTEMPT TO CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS
THE ROADWAY.  NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL
ONE...ON FOOT.  TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND.

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 25, 6:12 AM EST	Severe Thunderstorm Warning	FFC	Morgan, Newton, Walton	48 min
Nov 25, 6:42 AM EST	Severe Thunderstorm Warning	FFC	Clarke, Jackson, Oconee	33 min
Nov 25, 10:42 AM EST	Flash Flood Warning	FFC	Cobb, Douglas	4 hr
Nov 25, 10:42 AM EST	Flash Flood Warning	FFC	Clayton	4 hr
Nov 25, 10:42 AM EST	Flash Flood Warning	FFC	Gwinnett	4 hr
Nov 25, 2:15 PM EST	Flash Flood Warning	FFC	DeKalb, Fulton, Gwinnett	3 hr
Nov 25, 2:15 PM EST	Flash Flood Warning	FFC	Clayton	3 hr
Nov 25, 2:15 PM EST	Flash Flood Warning	FFC	Cobb, Douglas	3 hr

Nearby

Flash Flood Warnings in Georgia, 1992 Every 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.