Alert archive / Georgia / Flash Flood Warnings in 2003

Flash Flood Warning 76, NWS Atlanta, GA

June 18, 2003Troup County, Georgia

NWS Atlanta, GA issued this flash flood warning at Jun 18, 2003, 12:15 AM EDT for Troup 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
Jun 18, 2003, 12:15 AM EDT (04:15 UTC)
Expired
Jun 18, 2003, 2:15 AM EDT
In force
2 hr
Issued by
NWS Atlanta, GA
Area
Counties, with a storm outline in the text

County Troup County, GA

The radar

The Atlanta radar (KFFC), 61 km from the middle of the area, began a volume at 04:14 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, 4.3 hours before the alert went out and 67 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 2003-06-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1359 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 2003-06-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 29 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
1359 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
794 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
29 m²/s²
0-3 km storm-relative helicity
48 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.4

Open this sounding in Storm Lab

The text

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

000 
WGUS52 KFFC 180415
FFWATL
GAC285-180615-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1215 AM EDT WED JUN 18 2003

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  TROUP COUNTY IN WEST CENTRAL GEORGIA

* UNTIL 215 AM EDT

* AT 1205 AM EDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED FLASH 
  FLOODING OVER SOME AREAS OF TROUP COUNTY. RAINFALL OF UP TO 2
  INCHES HAS FALLEN OVER PARTS OF THE COUNTY SINCE 1100 PM...AND
  ANOTHER 1 TO 2 INCHES MAY FALL THROUGH 200 AM.

EXCESSIVE RUNOFF 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.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS OBSERVED ACT
QUICKLY. MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY
IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

LAT...LON 3288 8513 3288 8491 3315 8488 3313 8518

$$

BDL
1 follow-up statement
000 
WGUS72 KFFC 180537
FFSATL
GAC285-180615-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
135 AM EDT WED JUN 18 2003

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR TROUP COUNTY UNTIL 215
   AM EDT...

AT 130 AM...WEATHER RADAR INDICATES THE HEAVY RAIN HAS MOVED OUT OF 
TROUP COUNTY WITH ONLY LIGHT RAIN OVER NORTHERN TROUP. THE FLASH 
FLOOD WARNING WILL BE ALLOWED TO EXPIRE AT 215 AM. FLOOD WATERS 
WILL SUBSIDE RAPIDLY.

LOCAL LAW ENFORCEMENT AND EMERGENCY MANAGEMENT...HAS INDICATED 
EXCESSIVE RUNOFF FROM HEAVY RAINFALL...HAS CAUSED FLASH FLOODING
ACROSS PARTS OF THE COUNTY AND AROUND LAGRANGE.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODS AND FLASH FLOODS.

LAT...LON 3320 8488 3289 8487 3289 8515 3313 8519

$$

BDL

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 17, 9:24 PM EDTFlash Flood WarningFFCCoweta2 hr
Jun 18, 6:51 AM EDTFlash Flood WarningFFCCoweta, Heard, Troup3 hr
Jun 18, 12:07 PM EDTFlash Flood WarningFFCCarroll113 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.