Alert archive / Georgia / Flash Flood Warnings in 2003

Flash Flood Warning 64, NWS Atlanta, GA

May 18, 2003Bartow County, Georgia

NWS Atlanta, GA issued this flash flood warning at May 18, 2003, 5:40 AM EDT for Bartow County, Georgia. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
May 18, 2003, 5:40 AM EDT (09:40 UTC)
Expired
May 18, 2003, 8:45 AM EDT
In force
3 hr
Issued by
NWS Atlanta, GA
Area
Counties, with a storm outline in the text

County Bartow County, GA

The radar

The Atlanta radar (KFFC), 109 km from the middle of the area, began a volume at 09:43 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 9.7 hours before the alert went out and 110 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 2003-05-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2590 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°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 2003-05-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 78 square meters per square second.193958Sfc1 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
2590 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
819 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
78 m²/s²
0-3 km storm-relative helicity
95 m²/s²
Significant tornado parameter
1.2
Supercell composite
6.2

Open this sounding in Storm Lab

The text

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

000 
WGUS52 KFFC 180941
FFWATL
GAC015-181245-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
540 AM EDT SUN MAY 18 2003

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  BARTOW COUNTY IN NORTHWEST GEORGIA

* UNTIL 845 AM EDT

* AT 538 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  VERY HEAVY RAIN MOVING ACROSS BARTOW COUNTY. RAINFALL AMOUNTS OF
  2 TO 3 INCHES HAVE ALREADY FALLEN...AND AN ADDITIONAL 1 INCH IS 
  POSSIBLE.

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS AND STREAMS AND OTHER
LOW LYING AREAS ARE SUBJECT TO FLASH FLOODING.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS 
SAFELY. TWO FEET OF RUSHING WATER CAN CARRY AWAY MOST VEHICLES. 
VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO 
HIGHER GROUND.

LAT...LON 3439 8497 3441 8466 3410 8467

$$

The office that day

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

IssuedProductOfficeCountiesLasted
May 17, 8:32 PM EDTSevere Thunderstorm WarningFFCBartow, Cherokee28 min
May 17, 11:52 PM EDTSevere Thunderstorm WarningFFCChattooga53 min
May 18, 3:35 AM EDTFlash Flood WarningFFCDeKalb, Fulton2 hr
May 18, 4:27 AM EDTFlash Flood WarningFFCChattooga, Floyd3 hr
May 18, 3:58 PM EDTSevere Thunderstorm WarningFFCDodge32 min
May 18, 4:01 PM EDTSevere Thunderstorm WarningFFCJones29 min
May 18, 4:16 PM EDTSevere Thunderstorm WarningFFCWilkinson29 min
May 18, 4:18 PM EDTSevere Thunderstorm WarningFFCTelfair27 min
May 18, 4:40 PM EDTSevere Thunderstorm WarningFFCBleckley, Laurens35 min
May 18, 4:46 PM EDTSevere Thunderstorm WarningFFCWilcox29 min
May 18, 4:59 PM EDTSevere Thunderstorm WarningFFCWilkinson31 min
May 18, 5:19 PM EDTSevere Thunderstorm WarningFFCWashington26 min
May 18, 5:27 PM EDTSevere Thunderstorm WarningFFCTelfair33 min

Nearby

Flash Flood Warnings in Georgia, 2003Every flash flood warning in 2003

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; radar from the NEXRAD Level II archive.