Alert archive / Georgia / Flash Flood Warnings in 1999

Flash Flood Warning 2, NWS Columbia, SC

July 11, 1999Lincoln County, Georgia

NWS Columbia, SC issued this flash flood warning at Jul 11, 1999, 6:09 PM EDT for Lincoln 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
Jul 11, 1999, 6:09 PM EDT (22:09 UTC)
Expired
Jul 11, 1999, 8:15 PM EDT
In force
2 hr
Issued by
NWS Columbia, SC
Area
Whole counties

County Lincoln County, GA

The radar

The Greer radar (KGSP), 123 km from the middle of the area, began a volume at 22:11 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, 10.2 hours before the alert went out and 196 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 1999-07-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 484 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 1999-07-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 44 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
484 J/kg
Mixed-layer CIN
-61 J/kg
Mixed-layer LCL
771 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
44 m²/s²
0-3 km storm-relative helicity
48 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 
TTAA00 KCAE 112208
FFWCAE
GAC181-120015-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE COLUMBIA SC
609 PM EDT SUN JUL 11 1999

THE NATIONAL WEATHER SERVICE IN COLUMBIA SC HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  LINCOLN COUNTY IN GEORGIA

* UNTIL 815 PM EDT 

* LINCOLN COUNTY EMERGENCY MANAGEMENT REPORTED 1 FOOT OF WATER 
  ON SOME STREETS IN THE CITY OF LINCOLNTON. SHOWERS AND THUNDERSTORMS 
  ARE EXPECTED TO CONTINUE FOR ANOTHER HOUR OR SO...BUT WILL 
  LIKELY DIMINISH IN INTENSITY.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE 
ROAD. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO 
CROSS SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED 
QUICKLY.

AMATEUR RADIO AND OTHER SPOTTERS ARE REQUESTED TO MONITOR THIS  
FLOODING AND RELAY REPORTS PROMPTLY TO THE NEAREST NATIONAL WEATHER 
SERVICE OFFICE.

JDB

The office that day

Everything else NWS Columbia, SC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 11, 5:22 PM EDTSevere Thunderstorm WarningCAEColumbia53 min

Nearby

Flash Flood Warnings in Georgia, 1999Every flash flood warning in 1999

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.