Alert archive / Georgia / Flash Flood Warnings in 2013

Flash Flood Warning 84, NWS Atlanta, GA

August 15, 2013Dodge County, Laurens County, Treutlen County, Georgia

NWS Atlanta, GA issued this flash flood warning at Aug 15, 2013, 12:37 PM EDT for Dodge County, Laurens County, Treutlen County, Georgia. It was in force for 6 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 15, 2013, 12:37 PM EDT (16:37 UTC)
Expired
Aug 15, 2013, 6:30 PM EDT
In force
6 hr
Issued by
NWS Atlanta, GA
Area
Storm-based polygon
Flood severity
None

Counties Dodge County, GA, Laurens County, GA, Treutlen County, GA

The radar

The Robins AFB radar (KJGX), 47 km from the middle of the area, began a volume at 16:38 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, 4.6 hours before the alert went out and 178 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 2013-08-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 49 joules per kilogram.LCLLFCEL10008507005003002001001 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 12:00Z on 2013-08-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 7 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
49 J/kg
Mixed-layer CIN
-23 J/kg
Mixed-layer LCL
509 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
7 m²/s²
0-3 km storm-relative helicity
105 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.

819 
WGUS52 KFFC 151637
FFWFFC
GAC091-175-283-152230-
/O.NEW.KFFC.FF.W.0084.130815T1637Z-130815T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1237 PM EDT THU AUG 15 2013

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHERN DODGE COUNTY IN CENTRAL GEORGIA
  SOUTHERN LAURENS COUNTY IN CENTRAL GEORGIA
  WESTERN TREUTLEN COUNTY IN EAST CENTRAL GEORGIA

* UNTIL 630 PM EDT

* AT 1224 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  HEAVY RAINFALL AND POTENTIAL FLASH FLOODING FROM A SERIES OF 
  SHOWERS AND THUNDERSTORMS OVER THE WARNED AREA. ESTIMATED RAINFALL 
  TOTALS OF 3 TO 4 INCHES HAVE OCCURRED SINCE 10 AM AND AN 
  ADDITIONAL 2 TO 3 INCHES IS POSSIBLE THROUGH MID AFTERNOON.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO EASTMAN...
  CHESTER...RENTZ...DEXTER...CADWELL AND DUBLIN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...AS WELL AS HIGHWAYS AND UNDERPASSES.
ADDITIONALLY...COUNTRY ROADS AND FARMLANDS ALONG THE BANKS OF
CREEKS...STREAMS AND OTHER LOW LYING AREAS ARE SUBJECT TO 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. MOVE TO HIGHER GROUND.

IF YOU SEE SIGNIFICANT FLOODING CALL THE NATIONAL WEATHER SERVICE
TOLL FREE AT 1 8 6 6 7 6 3 4 4 6 6. YOU CAN ALSO TWEET YOUR REPORT
USING HASHTAG GAWX.

&&

LAT...LON 3208 8331 3216 8332 3218 8330 3220 8333
      3228 8334 3232 8328 3234 8330 3262 8269
      3262 8267 3259 8266 3252 8268 3251 8264
      3238 8259

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 14, 8:11 PM EDTSpecial Weather StatementFFCEmanuel49 min
Aug 14, 9:04 PM EDTFlash Flood WarningFFCLaurens6 hr
Aug 14, 9:20 PM EDTSpecial Weather StatementFFCJefferson, Johnson40 min
Aug 14, 9:34 PM EDTSpecial Weather StatementFFCDawson41 min
Aug 14, 9:38 PM EDTSpecial Weather StatementFFCFulton52 min
Aug 15, 5:48 AM EDTSpecial Weather StatementFFCHarris, Muscogee57 min
Aug 15, 6:46 AM EDTSpecial Weather StatementFFCHarris, Muscogee59 min
Aug 15, 10:15 AM EDTSpecial Weather StatementFFCBibb2 hr
Aug 15, 10:43 AM EDTFlash Flood WarningFFCBaldwin, Hancock, Putnam6 hr
Aug 15, 2:03 PM EDTSpecial Weather StatementFFCCrisp, Dooly, Sumter, Wilcox42 min
Aug 15, 2:56 PM EDTSpecial Weather StatementFFCCrisp94 min
Aug 15, 3:09 PM EDTSpecial Weather StatementFFCTelfair96 min
Aug 15, 3:45 PM EDTFlash Flood WatchFFCBaldwin, Barrow, Bartow, Bibb, Bleckley, Butts and 82 more4 days

Nearby

Flash Flood Warnings in Georgia, 2013Every flash flood warning in 2013

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.