Alert archive / Georgia / Flash Flood Warnings in 2001

Flash Flood Warning 10, NWS Atlanta, GA

August 4, 2001Lumpkin County, Georgia

NWS Atlanta, GA issued this flash flood warning at Aug 4, 2001, 7:37 PM EDT for Lumpkin County, Georgia. It was in force for 53 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued
Aug 4, 2001, 7:37 PM EDT (23:37 UTC)
Expired
Aug 4, 2001, 8:30 PM EDT
In force
53 min
Issued by
NWS Atlanta, GA
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Lumpkin County, GA

The radar

The Atlanta radar (KFFC), 140 km from the middle of the area, began a volume at 23:36 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, 11.6 hours before the alert went out and 137 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 12:00Z on 2001-08-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 24 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Peachtre/Fal Fld, GA at 12:00Z on 2001-08-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 29 square meters per square second.1939Sfc1 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
24 J/kg
Mixed-layer CIN
-78 J/kg
Mixed-layer LCL
1134 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
29 m²/s²
0-3 km storm-relative helicity
47 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 042341
FFWFFC
GAC187-050030-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
737 PM EDT SAT AUG 4 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

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

* UNTIL 830 PM EDT

* AT 735 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
THUNDERSTORM WITH VERY HEAVY RAIN FROM DAHLONEGA TO WESTERN LUMPKIN
COUNTY. ONE HOUR RAINFALL TOTALS HAVE BEEN FROM 3 TO 6 INCHES IN THE
AREA. RESIDENTS NEAR NIMBLEWILL CREEK AND OTHER SMALL STREAMS IN THE
AREA SHOULD BE ALERT FOR RAPIDLY RISING WATER. DO NOT DRIVE INTO
RUNNING WATER. IT MAY BE DEEPER THAN EXPECTED.

LAT...LON 3453 8399 3468 8411 3460 8419 3454 8419
          3446 8409

Nearby

Flash Flood Warnings in Georgia, 2001Every flash flood warning in 2001

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.