Alert archive / Georgia / Flash Flood Warnings in 2003

Flash Flood Warning 115, NWS Atlanta, GA

July 16, 2003Lumpkin County, Georgia

NWS Atlanta, GA issued this flash flood warning at Jul 16, 2003, 3:35 PM EDT for Lumpkin County, Georgia. It was in force for 115 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 16, 2003, 3:35 PM EDT (19:35 UTC)
Expired: Jul 16, 2003, 5:30 PM EDT
In force: 115 min
Issued by: NWS Atlanta, GA
Area: Counties, with a storm outline in the text

County Lumpkin County, GA

The radar

The Atlanta radar (KFFC), 143 km from the middle of the area, began a volume at 19:34 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 12:00Z, 7.6 hours before the alert went out and 140 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: 1129 J/kg
Mixed-layer CIN: -52 J/kg
Mixed-layer LCL: 976 m above ground
0-6 km bulk shear: 4 kt
0-1 km storm-relative helicity: -14 m²/s²
0-3 km storm-relative helicity: 28 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 161936
FFWATL
GAC187-162130-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
335 PM EDT WED JUL 16 2003

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  LUMPKIN COUNTY IN NORTH CENTRAL GEORGIA

* UNTIL 530 PM EDT

* AT 329 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
VERY HEAVY RAIN NORTH AND WEST OF DAHLONEGA...MOVING SOUTHEAST AT 10 
MPH.

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF CREEKS
AND STREAMS...ROADS AND ROADSIDE CULVERTS. THE HEAVY RAINS COULD ALSO
TRIGGER ROCK AND MUDSLIDES IN STEEP TERRAIN.

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 3467 8403 3457 8421 3442 8398 3451 8384

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 16, 4:15 PM EDT	Flash Flood Warning	FFC	Gilmer	2 hr
Jul 16, 4:48 PM EDT	Severe Thunderstorm Warning	FFC	Jackson	27 min
Jul 16, 4:59 PM EDT	Severe Thunderstorm Warning	FFC	Gilmer, Pickens	46 min
Jul 16, 5:08 PM EDT	Flash Flood Warning	FFC	Pickens	3 hr
Jul 16, 5:55 PM EDT	Severe Thunderstorm Warning	FFC	Gordon	35 min
Jul 16, 6:02 PM EDT	Flash Flood Warning	FFC	Gordon	3 hr
Jul 16, 6:09 PM EDT	Flash Flood Warning	FFC	Gilmer	3 hr
Jul 16, 6:17 PM EDT	Flash Flood Warning	FFC	Fannin, Union	118 min
Jul 16, 6:37 PM EDT	Severe Thunderstorm Warning	FFC	Newton, Walton	23 min
Jul 16, 6:59 PM EDT	Severe Thunderstorm Warning	FFC	Newton, Walton	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.