Alert archive / Georgia / Flash Flood Warnings in 2013

Flash Flood Warning 53, NWS Atlanta, GA

July 11, 2013Jasper County, Morgan County, Putnam County, Georgia

NWS Atlanta, GA issued this flash flood warning at Jul 11, 2013, 7:29 PM EDT for Jasper County, Morgan County, Putnam County, Georgia. It was in force for 4 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: Jul 11, 2013, 7:29 PM EDT (23:29 UTC)
Expired: Jul 11, 2013, 11:30 PM EDT
In force: 4 hr
Issued by: NWS Atlanta, GA
Area: Storm-based polygon
Flood severity: None

Counties Jasper County, GA, Morgan County, GA, Putnam County, GA

The radar

The Robins AFB radar (KJGX), 83 km from the middle of the area, began a volume at 23:29 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, 11.5 hours before the alert went out and 91 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: 56 J/kg
Mixed-layer CIN: -80 J/kg
Mixed-layer LCL: 560 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: -2 m²/s²
0-3 km storm-relative helicity: 20 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.

377 
WGUS52 KFFC 112329
FFWFFC
GAC159-211-237-120330-
/O.NEW.KFFC.FF.W.0053.130711T2329Z-130712T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
729 PM EDT THU JUL 11 2013

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CENTRAL JASPER COUNTY IN CENTRAL GEORGIA
  NORTHERN PUTNAM COUNTY IN CENTRAL GEORGIA
  SOUTHEASTERN MORGAN COUNTY IN NORTH CENTRAL GEORGIA

* UNTIL 1130 PM EDT

* AT 724 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  FLASH FLOODING FROM A THUNDERSTORM OVER THE WARNED AREA.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO PHOENIX AND
  SHADY DALE.

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.

FLOODING IS OCCURRING OR IS IMMINENT. MOST FLOOD RELATED DEATHS OCCUR
IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS WATER COVERED BRIDGES...
DIPS...OR LOW WATER CROSSINGS. NEVER TRY TO CROSS A FLOWING STREAM...
EVEN A SMALL ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP 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 3334 8376 3345 8359 3353 8349 3357 8334
      3348 8331 3334 8319 3321 8376

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 10, 8:23 PM EDT	Special Weather Statement	FFC	Catoosa, Dade, Murray, Walker, Whitfield	52 min
Jul 10, 8:56 PM EDT	Special Weather Statement	FFC	Murray, Whitfield	49 min
Jul 10, 9:09 PM EDT	Flash Flood Warning	FFC	Murray, Whitfield	4 hr
Jul 10, 9:40 PM EDT	Special Weather Statement	FFC	Dade, Walker	50 min
Jul 10, 9:54 PM EDT	Flash Flood Warning	FFC	Dade	4 hr
Jul 10, 10:32 PM EDT	Special Weather Statement	FFC	Dade, Walker	43 min
Jul 10, 10:53 PM EDT	Severe Thunderstorm Warning	FFC	Chattooga, Dade, Walker	52 min
Jul 10, 11:32 PM EDT	Severe Thunderstorm Warning	FFC	Chattooga, Floyd	43 min
Jul 11, 12:15 AM EDT	River Flood Warning	FFC	Dade	24 hr
Jul 11, 12:15 AM EDT	Special Weather Statement	FFC	Floyd	30 min
Jul 11, 2:04 AM EDT	Areal Flood Warning	FFC	Catoosa, Chattooga, Dade, Gordon, Murray, Walker and 1 more	6 hr
Jul 11, 3:58 AM EDT	Flash Flood Watch	FFC	Baldwin, Banks, Barrow, Bartow, Bibb, Butts and 73 more	24 hr
Jul 11, 6:18 AM EDT	River Flood Warning	FFC	Whitfield	41 hr
Jul 11, 5:14 PM EDT	Special Weather Statement	FFC	Twiggs	46 min
Jul 11, 6:44 PM EDT	Special Weather Statement	FFC	Crawford, Taylor	46 min
Jul 11, 6:47 PM EDT	Special Weather Statement	FFC	Stewart, Webster	43 min
Jul 11, 6:50 PM EDT	Special Weather Statement	FFC	Bleckley, Pulaski, Wilcox	40 min
Jul 11, 7:11 PM EDT	Special Weather Statement	FFC	Jasper, Putnam	49 min
Jul 11, 7:34 PM EDT	Special Weather Statement	FFC	Dodge, Laurens, Wilcox	26 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.