Alert archive / Georgia / Flash Flood Warnings in 2015

Flash Flood Warning 14, NWS Atlanta, GA

August 6, 2015Muscogee County, Georgia

NWS Atlanta, GA issued this flash flood warning at Aug 6, 2015, 8:28 PM EDT for Muscogee County, Georgia. It was in force for 3 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 6, 2015, 8:28 PM EDT (00:28 UTC)
Expired: Aug 6, 2015, 11:30 PM EDT
In force: 3 hr
Issued by: NWS Atlanta, GA
Area: Storm-based polygon
Flood severity: None

County Muscogee County, GA

The radar

The Maxwell AFB radar (KMXX), 78 km from the middle of the area, began a volume at 00:32 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 6, 8:40 PM EDT	FLASH FLOOD	1 E Kingston, GA	VEHICLES BECAME STUCK IN THE FLOODED ROADWAY ON AIRPORT THRUWAY.
Aug 6, 8:40 PM EDT	FLASH FLOOD	Columbus, GA	STREET FLOODING REPORTED ON 10TH STREET IN FRONT OF GOVERNMENT CENTER.

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, 0.5 hours before the alert went out and 111 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: 1221 J/kg
Mixed-layer CIN: -13 J/kg
Mixed-layer LCL: 997 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 82 m²/s²
0-3 km storm-relative helicity: 208 m²/s²
Significant tornado parameter: 0.9
Supercell composite: 9.1

Open this sounding in Storm Lab

The text

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

545 
WGUS52 KFFC 070028
FFWFFC
GAC215-070330-
/O.NEW.KFFC.FF.W.0014.150807T0028Z-150807T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
828 PM EDT THU AUG 6 2015

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WESTERN MUSCOGEE COUNTY IN WEST CENTRAL GEORGIA...

* UNTIL 1130 PM EDT
    
* AT 827 PM EDT...DOPPLER RADAR INDICATED A THUNDERSTORM PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. UP TO TWO INCHES OF RAIN HAVE 
  ALREADY FALLEN AND ANOTHER INCH OR MORE ARE LIKELY. FLASH FLOODING 
  ALONG LOW LYING... FLOOD PRONE AREAS IN AND AROUND THE COLUMBUS 
  AREA IS EXPECTED. 
  
  IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  COLUMBUS...BIBB CITY...EDGEWOOD...KENWOOD...VISTA TERRACE...GREEN
  ISLAND HILLS...BENNING HILLS...ROSE HILL...AVONDALE...SAND HILL...
  CARTER ACRES...BENNING PARK...COLUMBUS METROPOLITAN AIRPORT...
  HIGHLAND PARK...BATTLE PARK...CUSTER ROAD TERRACE...SAINT MARYS
  HILLS AND LAUREL HILLS.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

IF YOU SEE SIGNIFICANT FLOODING CALL THE NATIONAL WEATHER SERVICE
TOLL FREE AT 1 8 6 6 7 6 3 4 4 6 6 OR TWEET US YOUR WARNING AT
NWSATLANTA.

&&

LAT...LON 3257 8490 3241 8487 3238 8495 3237 8496
      3238 8499 3239 8498 3239 8497 3241 8498
      3242 8496 3244 8497 3245 8500 3252 8500
      3257 8505

$$

1 follow-up statement

077 
WGUS72 KFFC 070244
FFSFFC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1044 PM EDT THU AUG 6 2015

GAC215-070252-
/O.CAN.KFFC.FF.W.0014.000000T0000Z-150807T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MUSCOGEE GA-
1044 PM EDT THU AUG 6 2015

...THE FLASH FLOOD WARNING FOR WESTERN MUSCOGEE COUNTY IS
CANCELLED...

THE HEAVY RAIN HAS ENDED...AND ANY ADDITIONAL THREAT OF 
FLASH FLOODING IS NO LONGER EXPECTED AT THIS TIME.

LAT...LON 3257 8490 3241 8487 3238 8495 3237 8496
      3238 8499 3239 8498 3239 8497 3241 8498
      3242 8496 3244 8497 3245 8500 3252 8500
      3257 8505

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 6, 8:00 PM EDT	Severe Thunderstorm Warning	FFC	Coweta, Heard, Troup	45 min
Aug 6, 8:07 PM EDT	Severe Thunderstorm Warning	FFC	Chattahoochee, Harris, Muscogee	38 min
Aug 6, 8:18 PM EDT	Special Weather Statement	FFC	Pike	27 min
Aug 6, 8:40 PM EDT	Special Weather Statement	FFC	Chattahoochee	35 min
Aug 6, 8:46 PM EDT	Special Weather Statement	FFC	Coweta, Fayette, Lamar, Monroe, Pike, Spalding	44 min
Aug 6, 8:50 PM EDT	Severe Thunderstorm Warning	FFC	Chattahoochee, Stewart	40 min
Aug 6, 9:27 PM EDT	Special Weather Statement	FFC	Chattahoochee, Stewart	63 min
Aug 6, 9:29 PM EDT	Special Weather Statement	FFC	Talbot	46 min
Aug 6, 9:35 PM EDT	Special Weather Statement	FFC	Troup	25 min
Aug 6, 10:32 PM EDT	Special Weather Statement	FFC	Chattahoochee, Macon, Marion, Schley, Stewart, Sumter and 2 more	43 min
Aug 7, 4:06 PM EDT	Special Weather Statement	FFC	Stewart	24 min

Nearby

Flash Flood Warnings in Georgia, 2015 Every flash flood warning in 2015

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.