Alert archive / Georgia / Flash Flood Warnings in 2003

Flash Flood Warning 141, NWS Atlanta, GA

August 20, 2003Bartow County, Georgia

NWS Atlanta, GA issued this flash flood warning at Aug 20, 2003, 1:30 AM EDT for Bartow 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 outline as issued.

The facts

Issued: Aug 20, 2003, 1:30 AM EDT (05:30 UTC)
Expired: Aug 20, 2003, 3:30 AM EDT
In force: 2 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), 103 km from the middle of the area, began a volume at 05:34 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, 5.5 hours before the alert went out and 104 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: 1404 J/kg
Mixed-layer CIN: -45 J/kg
Mixed-layer LCL: 1235 m above ground
0-6 km bulk shear: 1 kt
0-1 km storm-relative helicity: -36 m²/s²
0-3 km storm-relative helicity: -1 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 
WGUS52 KFFC 200532
FFWATL
GAC015-200730-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
130 AM EDT WED AUG 20 2003

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

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

* UNTIL 330 AM EDT

* AT 120 AM EDT...WEATHER SERVICE RADAR INDICATED VERY HEAVY RAIN
FROM ADAIRSVILLE TO WHITE...MOVING NORTHWEST AT 10 MPH.

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...
INCLUDING SUVS AND PICKUPS. VEHICLES CAUGHT IN RISING WATER SHOULD
BE ABANDONED QUICKLY. MOVE TO HIGHER GROUND.

LAT...LON 3419 8492 3418 8468 3439 8468 3437 8497

$$

1 follow-up statement

000 
WGUS72 KFFC 200701
FFSATL
GAC015-200800-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
300 AM EDT WED AUG 20 2003

...FLASH FLOOD WARNING HAS BEEN CANCELLED FOR BARTOW COUNTY...

RAIN HAS MOVED OUT OF THE AREA. NO REPORTS OF FLOODING HAVE BEEN 
OBSERVED.

LAT...LON 3439 8469 3411 8469 3412 8498 3438 8498

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 19, 9:29 PM EDT	Severe Thunderstorm Warning	FFC	Emanuel	31 min

Nearby

Flash Flood Warnings in Georgia, 2003 Every 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.