Alert archive / Georgia / Flash Flood Warnings in 2013

Flash Flood Warning 64, NWS Atlanta, GA

August 1, 20134 counties in Georgia

NWS Atlanta, GA issued this flash flood warning at Aug 1, 2013, 1:54 AM EDT for 4 counties in Georgia. It was in force for 6 hr. 4 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Aug 1, 2013, 1:54 AM EDT (05:54 UTC)
Expired
Aug 1, 2013, 7:45 AM EDT
In force
6 hr
Issued by
NWS Atlanta, GA
Area
Storm-based polygon
Flood severity
None

Counties Cherokee County, GA, Dawson County, GA, Forsyth County, GA, Pickens County, GA

The radar

The Atlanta radar (KFFC), 105 km from the middle of the area, began a volume at 05:56 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.

What was reported inside it

TimeReportWhereRemark
Aug 1, 2:15 AM EDTFLASH FLOOD2 N Jasper, GAMOBILE HOME IS BEING EVACUATED DUE TO HIGH WATER.
Aug 1, 6:45 AM EDTFLASH FLOOD4 Ene Jasper, GATHE EMERGENCY MANAGER REPORTED SWIFT WATER RESCUES IN PROGRESS AT THE YOUNG LIFE CAMP OFF OF CAMP HOPE ROAD. A PORTION OF THE ROAD WAS WASHED OUT CUTTING OFF THE CAMP.
Aug 1, 7:00 AM EDTHEAVY RAIN 06 Ne Nelson, GA4.43 INCHES OF RAIN WAS REPORTED BY A COCORAHS OBSERVER.
Aug 1, 7:00 AM EDTHEAVY RAIN 4.436 Ne Nelson, GA4.43 INCHES OF RAIN WAS MEASURED BY A COCORAHS OBSERVER.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 5.9 hours before the alert went out and 103 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 2013-08-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 557 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 00:00Z on 2013-08-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 88 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
557 J/kg
Mixed-layer CIN
-49 J/kg
Mixed-layer LCL
777 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
88 m²/s²
0-3 km storm-relative helicity
105 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.4

Open this sounding in Storm Lab

The text

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

437 
WGUS52 KFFC 010554
FFWFFC
GAC057-085-117-227-011145-
/O.NEW.KFFC.FF.W.0064.130801T0554Z-130801T1145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
154 AM EDT THU AUG 1 2013

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHEASTERN CHEROKEE COUNTY IN NORTH CENTRAL GEORGIA
  WESTERN DAWSON COUNTY IN NORTH CENTRAL GEORGIA
  WESTERN FORSYTH COUNTY IN NORTH CENTRAL GEORGIA
  EASTERN PICKENS COUNTY IN NORTH CENTRAL GEORGIA

* UNTIL 745 AM EDT

* AT 147 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  THAT 2 TO 4 INCHES OF RAIN HAS FALLEN ACROSS EASTERN PICKENS AND   
  CHEROKEE COUNTIES INTO WESTERN DAWSON AND FORSYTH COUNTIES.        
  ADDITIONAL RAINFALL AMOUNTS OF ONE TO ONE AND A HALF INCHES WILL   
  BE POSSIBLE. THESE STORMS WERE NEARLY STATIONARY ACROSS THE AREA. 

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO      
  FREE HOME...HOLBROOK...BALL GROUND...UNION HILL AND NEAR CUMMING   
  AT BIG CREEK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS...OR WATERS OF UNKNOWN DEPTH...ON FOOT OR IN
AN AUTOMOBILE.

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 3454 8420 3408 8413 3411 8424 3419 8426
      3419 8433 3417 8436 3417 8439 3455 8444

$$
1 follow-up statement
941 
WGUS72 KFFC 010753
FFSFFC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
353 AM EDT THU AUG 1 2013

GAC057-085-117-227-011145-
/O.CON.KFFC.FF.W.0064.000000T0000Z-130801T1145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PICKENS GA-CHEROKEE GA-DAWSON GA-FORSYTH GA-
353 AM EDT THU AUG 1 2013

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 745 AM EDT FOR
WESTERN FORSYTH...WESTERN DAWSON...NORTHEASTERN CHEROKEE AND EASTERN
PICKENS COUNTIES...

AT 350 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE SHOWERS AND THUNDERSTORMS ACROSS EASTERN 
PICKENS...NORTHEASTERN CHEROKEE AND WESTERN DAWSON COUNTIES. THESE 
STORMS WILL HAVE THE POTENTIAL TO PRODUCE UP TO ANOTHER INCH OF 
RAINFALL ACROSS THE WARNED AREA. 

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO 
JASPER...TATE...MARBLEHILL...AND NELSON. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. 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.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS...OR WATERS OF UNKNOWN DEPTH...ON FOOT OR IN
AN AUTOMOBILE.

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 3454 8420 3408 8413 3411 8424 3419 8426
      3419 8433 3417 8436 3417 8439 3455 8444

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 31, 9:09 PM EDTSpecial Weather StatementFFCPolk51 min
Jul 31, 10:18 PM EDTSpecial Weather StatementFFCChattooga, Floyd42 min
Aug 1, 12:58 AM EDTSpecial Weather StatementFFCDawson32 min
Aug 1, 6:07 AM EDTFlash Flood WarningFFCGilmer6 hr
Aug 1, 7:31 AM EDTRiver Flood WarningFFCForsyth14 hr
Aug 1, 7:44 AM EDTAreal Flood WarningFFCPickens6 hr
Aug 1, 9:53 AM EDTRiver Flood WarningFFCForsyth, Fulton37 hr
Aug 1, 12:00 PM EDTAreal Flood WarningFFCGilmer6 hr
Aug 1, 6:36 PM EDTSpecial Weather StatementFFCWilcox24 min
Aug 1, 6:59 PM EDTSpecial Weather StatementFFCCrisp31 min
Aug 1, 7:35 PM EDTSpecial Weather StatementFFCMadison25 min

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.