Alert archive / Georgia / Flash Flood Warnings in 1998

Flash Flood Warning 15, NWS Atlanta, GA

August 18, 1998Greene County, Georgia

NWS Atlanta, GA issued this flash flood warning at Aug 18, 1998, 4:50 PM EDT for Greene County, Georgia. It was in force for 90 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Aug 18, 1998, 4:50 PM EDT (20:50 UTC)
Expired: Aug 18, 1998, 6:20 PM EDT
In force: 90 min
Issued by: NWS Atlanta, GA
Area: Whole counties

County Greene County, GA

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 8.8 hours before the alert went out and 126 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: 1334 J/kg
Mixed-layer CIN: -49 J/kg
Mixed-layer LCL: 989 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: -3 m²/s²
0-3 km storm-relative helicity: 15 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 182051
FFWATL
GAC133-182220-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
450 PM EDT TUE AUG 18 1998

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EASTERN GREENE COUNTY IN NORTHEASTERN GEORGIA

* UNTIL 620 PM EDT

* AT 445 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  A STATIONARY THUNDERSTORM WITH VERY HEAVY RAIN BETWEEN UNION POINT
  AND WHITE PLAINS. RAINFALLS OF 3 TO 6 INCHES HAVE OCCURRED SINCE
  4 PM EDT AND AN ADDITIONAL 1 TO 2 INCHES IS POSSIBLE IN THE SAME
  AREA BEFORE 530 PM EDT.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. WATER DEPTHS OF ONLY ONE TO TWO FEET WILL CAUSE MOST
AUTOMOBILES TO BECOME STRANDED OR FLOAT AWAY. IF THE WATER IS
MOVING...THE ROAD BED MAY BE ERODED. VEHICLES CAUGHT IN RISING WATER
SHOULD BE ABANDONED QUICKLY. IF RAPIDLY RISING WATER THREATENS HOMES
OR BUSINESSES IN YOUR AREA....OR IF YOU SEE ROADS OR BRIDGES BEING
COVERED WITH WATER FROM RISING CREEKS OR STREAMS...PLEASE CALL THE
NATIONAL WEATHER SERVICE AT 770-486-8535.

WRS

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 18, 2:11 PM EDT	Severe Thunderstorm Warning	FFC	Spalding	34 min
Aug 18, 2:23 PM EDT	Severe Thunderstorm Warning	FFC	Butts	32 min
Aug 18, 2:38 PM EDT	Severe Thunderstorm Warning	FFC	Monroe	32 min
Aug 18, 3:02 PM EDT	Severe Thunderstorm Warning	FFC	Jasper	33 min
Aug 18, 3:07 PM EDT	Severe Thunderstorm Warning	FFC	Crawford	33 min
Aug 18, 3:11 PM EDT	Severe Thunderstorm Warning	FFC	Coweta	34 min
Aug 18, 3:27 PM EDT	Severe Thunderstorm Warning	FFC	Putnam	33 min
Aug 18, 3:31 PM EDT	Severe Thunderstorm Warning	FFC	Jones	34 min
Aug 18, 3:54 PM EDT	Severe Thunderstorm Warning	FFC	Fulton	36 min
Aug 18, 3:59 PM EDT	Severe Thunderstorm Warning	FFC	Baldwin	36 min
Aug 18, 4:05 PM EDT	Severe Thunderstorm Warning	FFC	Peach	20 min
Aug 18, 4:07 PM EDT	Severe Thunderstorm Warning	FFC	Carroll	33 min
Aug 18, 4:11 PM EDT	Severe Thunderstorm Warning	FFC	Jones	34 min
Aug 18, 4:22 PM EDT	Severe Thunderstorm Warning	FFC	Greene	33 min
Aug 18, 4:52 PM EDT	Severe Thunderstorm Warning	FFC	Jefferson	33 min
Aug 18, 5:26 PM EDT	Severe Thunderstorm Warning	FFC	Glascock, Jefferson, Washington	34 min
Aug 18, 5:28 PM EDT	Severe Thunderstorm Warning	FFC	Emanuel	22 min
Aug 18, 6:10 PM EDT	Severe Thunderstorm Warning	FFC	Telfair, Wilcox	35 min

Nearby

Flash Flood Warnings in Georgia, 1998 Every 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.