Alert archive / Georgia / Flash Flood Warnings in 1998

Flash Flood Warning 9, NWS Atlanta, GA

April 18, 1998Whitfield County, Georgia

NWS Atlanta, GA issued this flash flood warning at Apr 18, 1998, 11:54 PM EDT for Whitfield 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 counties it named.

The facts

Issued: Apr 18, 1998, 11:54 PM EDT (03:54 UTC)
Expired: Apr 19, 1998, 2:00 AM EDT
In force: 2 hr
Issued by: NWS Atlanta, GA
Area: Whole counties

County Whitfield County, GA

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 3.9 hours before the alert went out and 165 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: 589 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 1082 m above ground
0-6 km bulk shear: 79 kt
0-1 km storm-relative helicity: 160 m²/s²
0-3 km storm-relative helicity: 280 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 4.5

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KATL 190356
FFWATL
GAC313-190555-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1154 PM EDT SAT APR 18 1998

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WHITFIELD COUNTY IN NORTHWESTERN GEORGIA

* UNTIL 200 AM EDT

* NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG
  THUNDERSTORM WITH VERY HEAVY RAIN PASSED ACROSS WHITFIELD
  COUNTY BETWEEN 1100 PM AND 1145 PM EDT.

* A COUPLE OF STATE HIGHWAYS AND SEVERAL LOCAL ROADS HAVE BEEN
  REPORTED CLOSED DUE TO HIGH WATER. RAIN SHOULD TAPER OFF BUT IT
  MAY TAKE A COUPLE OF HOURS FOR THE WATER TO RETURN TO NORMAL
  LEVELS.

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. IF RAPIDLY RISING WATER
THREATENS HOMES OR pBUSINESSES 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.

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 18, 8:42 PM EDT	Tornado Warning	FFC	Dade	33 min
Apr 18, 8:50 PM EDT	Tornado Warning	FFC	Catoosa, Walker	50 min
Apr 18, 9:40 PM EDT	Tornado Warning	FFC	Walker, Whitfield	35 min
Apr 18, 10:16 PM EDT	Tornado Warning	FFC	Floyd	34 min
Apr 18, 10:50 PM EDT	Severe Thunderstorm Warning	FFC	Gordon	35 min
Apr 18, 11:03 PM EDT	Tornado Warning	FFC	Gordon	32 min
Apr 19, 1:22 PM EDT	Severe Thunderstorm Warning	FFC	Bibb, Houston, Twiggs	33 min
Apr 19, 1:35 PM EDT	Severe Thunderstorm Warning	FFC	Jones	35 min
Apr 19, 1:46 PM EDT	Tornado Warning	FFC	Jones, Twiggs	34 min
Apr 19, 1:46 PM EDT	Tornado Warning	FFC	Baldwin	34 min
Apr 19, 2:20 PM EDT	Severe Thunderstorm Warning	FFC	Baldwin, Hancock	35 min
Apr 19, 2:49 PM EDT	Severe Thunderstorm Warning	FFC	Hancock, Warren	31 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.