Alert archive / Georgia / Flash Flood Warnings in 2013

Flash Flood Warning 78, NWS Atlanta, GA

August 11, 2013Lumpkin County, White County, Georgia

NWS Atlanta, GA issued this flash flood warning at Aug 11, 2013, 3:57 PM EDT for Lumpkin County, White County, Georgia. It was in force for 6 hr. 2 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 11, 2013, 3:57 PM EDT (19:57 UTC)
Expired: Aug 11, 2013, 10:00 PM EDT
In force: 6 hr
Issued by: NWS Atlanta, GA
Area: Storm-based polygon
Flood severity: None

Counties Lumpkin County, GA, White County, GA

The radar

The Greer radar (KGSP), 141 km from the middle of the area, began a volume at 19:59 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

Time	Report	Where	Remark
Aug 11, 4:30 PM EDT	FLASH FLOOD	3 S Camp Coleman Lake, GA	THE WHITE COUNTY EMERGENCY MANAGER REPORTED THE NORTH GEORGIA ZOO NEAR CAMP COLEMAN LAKE OR AROUND 6 MILES WNW OF CLEVELAND WAS FLOODED BY GLADE CREEK. THE ANIMALS WERE EVACUATED. SOME DAMAGE TO STRUCTURES...BRIDGES AND FENCES OCCURRED. GRAVEL OR DIRT ROADS AN
Aug 11, 6:00 PM EDT	FLASH FLOOD	6 Ne Cleveland, GA	PUDDLEBEE ROAD UNDERWATER. BARN FLOODED AND ANIMALS STRANDED. ROY POWERS ROAD UNDERWATER AS WELL. TIME ESTIMATED.

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 12:00Z, 8.0 hours before the alert went out and 154 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 441 J/kg
Mixed-layer CIN: -43 J/kg
Mixed-layer LCL: 809 m above ground
0-6 km bulk shear: 6 kt
0-1 km storm-relative helicity: -24 m²/s²
0-3 km storm-relative helicity: -25 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.

484 
WGUS52 KFFC 111957
FFWFFC
GAC187-311-120200-
/O.NEW.KFFC.FF.W.0078.130811T1957Z-130812T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
357 PM EDT SUN AUG 11 2013

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHEASTERN LUMPKIN COUNTY IN NORTH CENTRAL GEORGIA
  WHITE COUNTY IN NORTHEAST GEORGIA

* UNTIL 1000 PM EDT

* AT 353 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  FLASH FLOODING FROM A THUNDERSTORMS OVER THE WARNED AREA.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO HELEN.

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 3468 8363 3465 8365 3463 8363 3460 8364
      3454 8361 3450 8366 3450 8378 3452 8378
      3451 8380 3451 8395 3471 8396 3472 8363

$$

1 follow-up statement

310 
WGUS72 KFFC 112207
FFSFFC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
607 PM EDT SUN AUG 11 2013

GAC187-311-112218-
/O.CAN.KFFC.FF.W.0078.000000T0000Z-130812T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WHITE GA-LUMPKIN GA-
607 PM EDT SUN AUG 11 2013

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR NORTHEASTERN
LUMPKIN AND WHITE COUNTIES...

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 3468 8363 3465 8365 3463 8363 3460 8364
      3454 8361 3450 8366 3450 8378 3452 8378
      3451 8380 3451 8395 3471 8396 3472 8363

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 11, 12:31 PM EDT	Special Weather Statement	FFC	Walker	29 min
Aug 11, 1:05 PM EDT	Special Weather Statement	FFC	Walker	25 min
Aug 11, 1:31 PM EDT	Special Weather Statement	FFC	Chattooga	44 min
Aug 11, 2:14 PM EDT	Special Weather Statement	FFC	Chattooga	46 min
Aug 11, 2:59 PM EDT	Special Weather Statement	FFC	White	31 min
Aug 11, 3:04 PM EDT	Special Weather Statement	FFC	Chattooga	41 min
Aug 11, 3:30 PM EDT	Special Weather Statement	FFC	White	30 min
Aug 11, 3:49 PM EDT	Special Weather Statement	FFC	Chattooga	41 min

Nearby

Flash Flood Warnings in Georgia, 2013 Every 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.