Alert archive / Georgia / Flash Flood Warnings in 1998

Flash Flood Warning 6, NWS Atlanta, GA

April 9, 1998DeKalb County, Fulton County, Gwinnett County, Georgia

NWS Atlanta, GA issued this flash flood warning at Apr 9, 1998, 4:00 AM EDT for DeKalb County, Fulton County, Gwinnett 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 counties it named.

The facts

Issued
Apr 9, 1998, 4:00 AM EDT (08:00 UTC)
Expired
Apr 9, 1998, 8:00 AM EDT
In force
4 hr
Issued by
NWS Atlanta, GA
Area
Whole counties

Counties DeKalb County, GA, Fulton County, GA, Gwinnett County, GA

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 8.0 hours before the alert went out and 58 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 00:00Z on 1998-04-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 771 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 00:00Z on 1998-04-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 176 square meters per square second.1939587897117136Sfc1 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
771 J/kg
Mixed-layer CIN
-28 J/kg
Mixed-layer LCL
478 m above ground
0-6 km bulk shear
67 kt
0-1 km storm-relative helicity
176 m²/s²
0-3 km storm-relative helicity
313 m²/s²
Significant tornado parameter
1.5
Supercell composite
8.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KATL 090803
FFWATL
GAC089-121-135-091200-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
400 AM EDT THU APR 9 1998
 
THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  800 AM EDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN NORTHWEST GEORGIA
 
   ...NORTHERN DEKALB COUNTY...NORTHERN FULTON COUNTY
   ...GWINNETT COUNTY
 
AT 345 AM THE STAGE READING AT PEACHTREE CREEK WAS 14.5 FEET AND
HAS RISEN AROUND 7 FEET DURING THE PAST 2 HOURS DUE TO HEAVY RAIN
FROM SEVERE THUNDERSTORMS. FLOOD STAGE IS 17 FEET AND PEACHTREE
CREEK IS EXPECTED TO RISE TO AROUND 20 FEET BY 7 AM THIS MORNING.
 
OTHER CREEKS INCLUDING SUWANNEE CREEK IN THE WARNED AREA WILL
ALSO HAVE RAPID RISES THIS MORNING AND MOTORISTS ARE URGED TO
USE CAUTION AND AVOID STANDING WATER.
 
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE
THE DANGERS OF FLOODS AND FLASH FLOODS. DO NOT STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS RISING. IF FLASH FLOODING IS
OBSERVED...MOVE TO HIGHER GROUND QUICKLY.
 
KDF

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 8, 8:05 PM EDTSevere Thunderstorm WarningFFCSpalding25 min
Apr 8, 8:10 PM EDTSevere Thunderstorm WarningFFCMeriwether35 min
Apr 8, 8:16 PM EDTTornado WarningFFCTroup14 min
Apr 8, 8:19 PM EDTSevere Thunderstorm WarningFFCMorgan, Newton26 min
Apr 8, 8:25 PM EDTTornado WarningFFCMeriwether35 min
Apr 8, 8:32 PM EDTSevere Thunderstorm WarningFFCPike, Spalding43 min
Apr 8, 8:37 PM EDTSevere Thunderstorm WarningFFCBarrow, Oconee, Walton38 min
Apr 8, 8:42 PM EDTSevere Thunderstorm WarningFFCButts, Jasper33 min
Apr 8, 8:47 PM EDTTornado WarningFFCPike28 min
Apr 8, 8:57 PM EDTSevere Thunderstorm WarningFFCJackson33 min
Apr 8, 8:59 PM EDTSevere Thunderstorm WarningFFCLamar31 min
Apr 8, 9:03 PM EDTSevere Thunderstorm WarningFFCHeard, Troup42 min
Apr 8, 9:08 PM EDTSevere Thunderstorm WarningFFCFulton, Gwinnett37 min
Apr 8, 9:11 PM EDTSevere Thunderstorm WarningFFCMorgan, Newton34 min
Apr 8, 9:14 PM EDTSevere Thunderstorm WarningFFCHancock, Washington46 min
Apr 8, 9:22 PM EDTSevere Thunderstorm WarningFFCCarroll, Coweta53 min
Apr 8, 9:22 PM EDTSevere Thunderstorm WarningFFCHaralson53 min
Apr 8, 9:23 PM EDTSevere Thunderstorm WarningFFCForsyth, Hall37 min
Apr 8, 9:29 PM EDTSevere Thunderstorm WarningFFCGlascock, Warren31 min
Apr 8, 9:32 PM EDTSevere Thunderstorm WarningFFCButts, Jasper43 min
Apr 8, 9:32 PM EDTSevere Thunderstorm WarningFFCGreene, Morgan43 min
Apr 8, 9:35 PM EDTSevere Thunderstorm WarningFFCFayette, Fulton40 min
Apr 8, 9:42 PM EDTTornado WarningFFCCoweta33 min
Apr 8, 9:44 PM EDTSevere Thunderstorm WarningFFCCobb, Paulding31 min
Apr 8, 9:44 PM EDTSevere Thunderstorm WarningFFCCherokee31 min
Apr 8, 9:48 PM EDTSevere Thunderstorm WarningFFCChattooga, Walker42 min
Apr 8, 9:50 PM EDTSevere Thunderstorm WarningFFCBanks, Hall25 min
Apr 8, 9:54 PM EDTSevere Thunderstorm WarningFFCGilmer, Gordon51 min
Apr 8, 10:03 PM EDTSevere Thunderstorm WarningFFCClayton, Henry, Rockdale42 min
Apr 8, 10:14 PM EDTSevere Thunderstorm WarningFFCFannin31 min
Apr 8, 10:20 PM EDTSevere Thunderstorm WarningFFCFulton25 min
Apr 8, 10:24 PM EDTSevere Thunderstorm WarningFFCNewton, Rockdale36 min
Apr 8, 10:33 PM EDTSevere Thunderstorm WarningFFCDeKalb, Gwinnett42 min
Apr 8, 10:38 PM EDTSevere Thunderstorm WarningFFCWalton37 min
Apr 8, 10:43 PM EDTSevere Thunderstorm WarningFFCBartow, Floyd47 min
Apr 8, 10:46 PM EDTSevere Thunderstorm WarningFFCBarrow, Oconee29 min
Apr 8, 10:50 PM EDTSevere Thunderstorm WarningFFCGilmer, Murray25 min
Apr 8, 10:55 PM EDTSevere Thunderstorm WarningFFCClarke, Jackson, Madison50 min
Apr 8, 10:57 PM EDTTornado WarningFFCPolk33 min
Apr 8, 11:06 PM EDTSevere Thunderstorm WarningFFCGlascock, Warren39 min
Apr 8, 11:15 PM EDTSevere Thunderstorm WarningFFCHaralson30 min
Apr 8, 11:21 PM EDTSevere Thunderstorm WarningFFCOglethorpe39 min
Apr 8, 11:24 PM EDTSevere Thunderstorm WarningFFCCarroll, Paulding36 min
Apr 8, 11:24 PM EDTSevere Thunderstorm WarningFFCBartow36 min
Apr 8, 11:29 PM EDTTornado WarningFFCHaralson31 min
Apr 8, 11:37 PM EDTSevere Thunderstorm WarningFFCHall38 min
Apr 8, 11:43 PM EDTTornado WarningFFCBartow, Paulding32 min
Apr 8, 11:48 PM EDTSevere Thunderstorm WarningFFCBanks42 min
Apr 8, 11:51 PM EDTSevere Thunderstorm WarningFFCCherokee, Cobb39 min
Apr 9, 12:07 AM EDTTornado WarningFFCCobb38 min
Apr 9, 12:16 AM EDTSevere Thunderstorm WarningFFCForsyth, Fulton44 min
Apr 9, 12:16 AM EDTSevere Thunderstorm WarningFFCDawson, Lumpkin44 min
Apr 9, 12:23 AM EDTTornado WarningFFCFulton37 min
Apr 9, 12:31 AM EDTTornado WarningFFCDeKalb, Gwinnett29 min
Apr 9, 12:33 AM EDTSevere Thunderstorm WarningFFCCarroll27 min
Apr 9, 12:48 AM EDTTornado WarningFFCGwinnett27 min
Apr 9, 1:02 AM EDTTornado WarningFFCBarrow, Hall, Jackson43 min
Apr 9, 1:09 AM EDTTornado WarningFFCDouglas36 min
Apr 9, 1:13 AM EDTTornado WarningFFCCobb32 min
Apr 9, 1:21 AM EDTSevere Thunderstorm WarningFFCDeKalb, Fulton39 min
Apr 9, 1:24 AM EDTSevere Thunderstorm WarningFFCGwinnett51 min
Apr 9, 1:35 AM EDTSevere Thunderstorm WarningFFCBanks, Madison25 min
Apr 9, 2:02 AM EDTSevere Thunderstorm WarningFFCCarroll, Heard43 min
Apr 9, 2:09 AM EDTSevere Thunderstorm WarningFFCBarrow, Jackson36 min
Apr 9, 2:41 AM EDTSevere Thunderstorm WarningFFCCoweta, Troup34 min
Apr 9, 2:54 AM EDTSevere Thunderstorm WarningFFCClayton, Fayette51 min
Apr 9, 2:54 AM EDTSevere Thunderstorm WarningFFCMeriwether51 min
Apr 9, 3:01 AM EDTSevere Thunderstorm WarningFFCDeKalb, Fulton29 min
Apr 9, 3:09 AM EDTSevere Thunderstorm WarningFFCTelfair, Wheeler36 min
Apr 9, 3:15 AM EDTSevere Thunderstorm WarningFFCGwinnett, Rockdale30 min
Apr 9, 3:15 AM EDTSevere Thunderstorm WarningFFCHenry, Spalding30 min
Apr 9, 3:15 AM EDTSevere Thunderstorm WarningFFCPike30 min
Apr 9, 3:25 AM EDTSevere Thunderstorm WarningFFCBarrow, Jackson, Walton35 min
Apr 9, 3:29 AM EDTSevere Thunderstorm WarningFFCMontgomery, Toombs31 min
Apr 9, 3:38 AM EDTSevere Thunderstorm WarningFFCButts, Monroe, Newton37 min
Apr 9, 5:16 AM EDTSevere Thunderstorm WarningFFCWebster29 min
Apr 9, 5:50 AM EDTSevere Thunderstorm WarningFFCMacon25 min
Apr 9, 6:05 AM EDTSevere Thunderstorm WarningFFCHouston25 min
Apr 9, 6:17 AM EDTTornado WarningFFCBleckley, Pulaski28 min
Apr 9, 6:32 AM EDTTornado WarningFFCDodge, Laurens28 min

Nearby

Flash Flood Warnings in Georgia, 1998Every flash flood warning in 1998

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.