Alert archive / Georgia / Flash Flood Warnings in 2013

Flash Flood Warning 80, NWS Atlanta, GA

August 14, 2013Muscogee County, Georgia

NWS Atlanta, GA issued this flash flood warning at Aug 14, 2013, 4:14 PM EDT for Muscogee 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 14, 2013, 4:14 PM EDT (20:14 UTC)
Expired
Aug 14, 2013, 10:15 PM EDT
In force
6 hr
Issued by
NWS Atlanta, GA
Area
Storm-based polygon
Flood severity
None

County Muscogee County, GA

The radar

The Maxwell AFB radar (KMXX), 88 km from the middle of the area, began a volume at 20:16 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 14, 4:25 PM EDTFLASH FLOOD5 Ne Columbus, GAWATER COMING OUT OF COOPER CREEK AND INTO A HOME IN NORTHGATE SUBDIVISION NEAR NORTHGATE DR AND REESE DR ON NORTHEAST PART OF COLUMBUS.
Aug 14, 4:45 PM EDTFLASH FLOOD5 Ne Columbus, GA2 ROADS CLOSED IN NORTHGATE SUBDIVISION DUE TO OVERFLOWING OF COOPER CREEK RESERVOIR IN NORTHEAST COLUMBUS.

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, 8.2 hours before the alert went out and 100 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 2013-08-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 307 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 2013-08-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -19 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
307 J/kg
Mixed-layer CIN
-47 J/kg
Mixed-layer LCL
775 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
-19 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.

888 
WGUS52 KFFC 142014
FFWFFC
GAC215-150215-
/O.NEW.KFFC.FF.W.0080.130814T2014Z-130815T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
414 PM EDT WED AUG 14 2013

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

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

* UNTIL 1015 PM EDT

* AT 412 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  FLASH FLOODING FROM A HEAVY RAIN OVER NORTHERN AND EAST PARTS 
  OF COLUMBUS. THE WEATHER STATION AT THE COLUMBUS AIRPORT ALSO 
  REPORTED OVER 4 INCHES OF RAIN IN THE LAST HOUR AND A HALF. 
  ALTHOUGH THE RAIN IS TAPERING OFF...RUNOFF FROM THE HEAVY RAIN 
  WILL CONTINUE TO CAUSE RISES IN DRAINAGE CREEKS AND STREAMS
  ACROSS THE CITY. 

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO COLUMBUS...
  UPATOI AND AND AREAS EAST OF COLUMBUS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

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 3259 8491 3259 8470 3257 8469 3256 8467
      3252 8468 3250 8473 3246 8475 3242 8497
      3246 8501 3249 8500 3253 8503 3254 8503

$$
1 follow-up statement
645 
WGUS72 KFFC 142256
FFSFFC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
656 PM EDT WED AUG 14 2013

GAC215-150215-
/O.CON.KFFC.FF.W.0080.000000T0000Z-130815T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MUSCOGEE GA-
656 PM EDT WED AUG 14 2013

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1015 PM EDT FOR
MUSCOGEE COUNTY...

AT 654 PM EDT...THE HEAVY RAIN HAS TAPERED OFF BUT LIGHT TO MODERATE
CONTINUED TO FALL ACROSS THE COLUMBUS AREA. ALTHOUGH ONLY AN ADDITIONAL
HALF INCH OF RAIN IS EXPECTED THROUGH 10 PM...RUNOFF FROM THE EARLIER
RAINFALL WILL STILL CAUSE RISES IN LARGER CREEKS AND RIVERS. DO NOT 
ALLOW CHILDREN TO PLAY NEAR FAST MOVING WATER AND DO NOT DRIVE THROUGH
FLOODED ROADS WHICH ARE DIFFICULT TO SEE AT NIGHT. THE FLOOD WATER 
SHOULD RECEDE LATER TONIGHT.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO NORTH AND EAST
PARTS OF COLUMBUS...KENWOOD...MIDLAND AND UPATOI.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 3259 8491 3259 8470 3257 8469 3256 8467
      3252 8468 3250 8473 3246 8475 3242 8497
      3246 8501 3249 8500 3253 8503 3254 8503

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 14, 3:47 PM EDTSpecial Weather StatementFFCMuscogee58 min
Aug 14, 4:51 PM EDTSpecial Weather StatementFFCDodge54 min
Aug 14, 5:47 PM EDTSpecial Weather StatementFFCDodge, Wilcox58 min
Aug 14, 5:51 PM EDTSpecial Weather StatementFFCMacon54 min
Aug 14, 6:02 PM EDTSpecial Weather StatementFFCHenry43 min
Aug 14, 6:22 PM EDTFlash Flood WarningFFCHenry6 hr
Aug 14, 6:33 PM EDTSpecial Weather StatementFFCTelfair57 min
Aug 14, 6:47 PM EDTSpecial Weather StatementFFCDeKalb43 min
Aug 14, 6:59 PM EDTSpecial Weather StatementFFCWheeler31 min
Aug 14, 7:46 PM EDTSpecial Weather StatementFFCLaurens59 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.