Alert archive / Georgia / Flash Flood Warnings in 2015

Flash Flood Warning 8, NWS Atlanta, GA

May 28, 2015Coweta County, Meriwether County, Georgia

NWS Atlanta, GA issued this flash flood warning at May 28, 2015, 4:20 PM EDT for Coweta County, Meriwether County, Georgia. It was in force for 6 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
May 28, 2015, 4:20 PM EDT (20:20 UTC)
Expired
May 28, 2015, 10:15 PM EDT
In force
6 hr
Issued by
NWS Atlanta, GA
Area
Storm-based polygon
Flood severity
None

Counties Coweta County, GA, Meriwether County, GA

The radar

The Atlanta radar (KFFC), 28 km from the middle of the area, began a volume at 20:23 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, 8.3 hours before the alert went out and 33 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 2015-05-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 397 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 2015-05-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 63 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
397 J/kg
Mixed-layer CIN
-97 J/kg
Mixed-layer LCL
722 m above ground
0-6 km bulk shear
5 kt
0-1 km storm-relative helicity
63 m²/s²
0-3 km storm-relative helicity
65 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.

455 
WGUS52 KFFC 282020
FFWFFC
GAC077-199-290215-
/O.NEW.KFFC.FF.W.0008.150528T2020Z-150529T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
420 PM EDT THU MAY 28 2015

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHWESTERN COWETA COUNTY IN WEST CENTRAL GEORGIA...
  NORTHWESTERN MERIWETHER COUNTY IN WEST CENTRAL GEORGIA...

* UNTIL 1015 PM EDT
    
* AT 418 PM EDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING 
  HEAVY RAIN ACROSS THE WARNED AREA. UP TO THREE INCHES OF RAIN HAVE 
  ALREADY FALLEN IN AND AROUND THE BEAR CREEK BASIN. FLASH FLOODING 
  IS POSSIBLE.

* SOME LOCATIONS THAT COULD EXPERIENCE FLOODING INCLUDE... 
  GRANTVILLE...LUTHERSVILLE...MORELAND...TURIN...LONE OAK... 
  WOOSTER...SAINT MARKS AND ROCKY MOUNT.

ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE POSSIBLE IN THE 
WARNED AREA.

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 3332 8493 3333 8463 3310 8460 3310 8486
      3322 8486 3324 8493

$$
39
2 follow-up statements
432 
WGUS72 KFFC 282153
FFSFFC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
553 PM EDT THU MAY 28 2015

GAC077-199-290215-
/O.CON.KFFC.FF.W.0008.000000T0000Z-150529T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COWETA GA-MERIWETHER GA-
553 PM EDT THU MAY 28 2015

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1015 PM EDT FOR
SOUTHWESTERN COWETA AND NORTHWESTERN MERIWETHER COUNTIES...

AT 544 PM EDT...DOPPLER RADAR INDICATED LIGHT TO MODERATE RAIN STILL 
FALLING ACROSS THE WARNED AREA. SO FAR... BETWEEN THREE AND FOUR 
INCHES OF RAIN HAVE FALLEN ACROSS THE WARNED AREA... AND THIS WILL 
BE SLOW TO DRAIN. THEREFORE... THE FLASH FLOODING WARNING HAS BEEN 
ALLOWED TO CONTINUE UNTIL AREA CREEKS... STREAMS AND LOW LYING FLOOD 
PRONE AREAS ARE ALLOWED TO DRAIN. 

SOME LOCATIONS THAT COULD BE EXPERIENCING FLOODING INCLUDE... AREAS 
AROUND BEAR CREEK BASIN TO INCLUDE LUTHERSVILLE... MORELAND... 
GRANTVILLE AND LONE OAK. 

ADDITIONAL RAINFALL AMOUNTS FROM ONE HALF TO ONE INCH ARE POSSIBLE 
OVER THE NEXT COUPLE OF HOURS AS STORMS CONTINUE TO DEVELOP. 

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 REPORT AT
NWSATLANTA.

&&

LAT...LON 3332 8493 3333 8463 3310 8460 3310 8486
      3322 8486 3324 8493

$$
020 
WGUS72 KFFC 282247
FFSFFC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
647 PM EDT THU MAY 28 2015

GAC077-199-282257-
/O.CAN.KFFC.FF.W.0008.000000T0000Z-150529T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COWETA GA-MERIWETHER GA-
647 PM EDT THU MAY 28 2015

...THE FLASH FLOOD WARNING FOR SOUTHWESTERN COWETA AND NORTHWESTERN
MERIWETHER COUNTIES IS CANCELLED...

THE HEAVY RAIN HAS ENDED AND FLOOD WATERS HAVE RECEDED. THEREFORE 
FLOODING IS NO LONGER EXPECTED TO POSE A THREAT TO LIFE OR PROPERTY. 
HOWEVER... PLEASE CONTINUE TO HEED ANY ROAD CLOSURES IN YOUR 
AREA.

LAT...LON 3332 8493 3333 8463 3310 8460 3310 8486
      3322 8486 3324 8493

$$

The office that day

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

IssuedProductOfficeCountiesLasted
May 27, 8:20 PM EDTSpecial Weather StatementFFCGlascock25 min
May 27, 8:23 PM EDTSpecial Weather StatementFFCDooly37 min
May 27, 10:13 PM EDTSpecial Weather StatementFFCTroup32 min
May 27, 10:50 PM EDTSpecial Weather StatementFFCTroup25 min
May 27, 11:15 PM EDTSpecial Weather StatementFFCCoweta, Fayette30 min
May 27, 11:46 PM EDTSpecial Weather StatementFFCClayton, Fayette29 min
May 28, 1:05 AM EDTSpecial Weather StatementFFCClayton, DeKalb, Fulton, Gwinnett, Rockdale25 min
May 28, 1:33 AM EDTSpecial Weather StatementFFCGwinnett, Rockdale27 min
May 28, 1:58 AM EDTSpecial Weather StatementFFCBarrow, Morgan, Newton, Walton32 min
May 28, 12:25 PM EDTSpecial Weather StatementFFCCoweta50 min
May 28, 1:29 PM EDTSpecial Weather StatementFFCCoweta31 min
May 28, 1:40 PM EDTSpecial Weather StatementFFCClarke65 min
May 28, 2:03 PM EDTSpecial Weather StatementFFCOglethorpe57 min
May 28, 2:17 PM EDTSpecial Weather StatementFFCCobb28 min
May 28, 2:22 PM EDTSpecial Weather StatementFFCOglethorpe23 min
May 28, 2:52 PM EDTSpecial Weather StatementFFCCarroll53 min
May 28, 2:55 PM EDTSpecial Weather StatementFFCHenry65 min
May 28, 4:01 PM EDTSpecial Weather StatementFFCCoweta59 min
May 28, 4:06 PM EDTSpecial Weather StatementFFCBanks, Hall54 min
May 28, 4:12 PM EDTSpecial Weather StatementFFCGordon63 min
May 28, 4:50 PM EDTSpecial Weather StatementFFCForsyth55 min
May 28, 4:56 PM EDTSpecial Weather StatementFFCGordon34 min
May 28, 4:59 PM EDTSevere Thunderstorm WarningFFCFloyd, Gordon19 min
May 28, 5:12 PM EDTSpecial Weather StatementFFCWhitfield33 min
May 28, 5:34 PM EDTSpecial Weather StatementFFCMurray, Whitfield41 min
May 28, 5:59 PM EDTSpecial Weather StatementFFCTroup61 min

Nearby

Flash Flood Warnings in Georgia, 2015Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.