Alert archive / Georgia / Flash Flood Warnings in 2009

Flash Flood Warning 25, NWS Atlanta, GA

September 19, 2009Clayton County, Fayette County, Fulton County, Georgia

NWS Atlanta, GA issued this flash flood warning at Sep 19, 2009, 10:27 AM EDT for Clayton County, Fayette County, Fulton 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
Sep 19, 2009, 10:27 AM EDT (14:27 UTC)
Expired
Sep 19, 2009, 4:15 PM EDT
In force
6 hr
Issued by
NWS Atlanta, GA
Area
Storm-based polygon
Flood severity
None

Counties Clayton County, GA, Fayette County, GA, Fulton County, GA

The radar

The Atlanta radar (KFFC), 34 km from the middle of the area, began a volume at 14:26 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
Sep 19, 12:45 PM EDTFLASH FLOOD2 Wnw College Park, GASOUTHERN HEIGHTS APARTMENT COMPLEX CUT OFF FROM CAMP CREEK PARKWAY NEAR THE INTERSECTION WITH I285 DUE TO WATER COMING OUT OF CREEK AND OVER ROADS. WATER POSSIBLY COMING INTO SOME UNITS. FIRE DEPARTMENT ON SCENE.
Sep 19, 2:30 PM EDTFLASH FLOOD2 Ne Riverdale, GATWO HOMES EVACUATED ON ROXBURY DRIVE. FLOODING FROM THE FLINT RIVER HAS BACKED UP INTO YARDS AND HOMES ARE BEING THREATENED. PORTIONS OF UPPER RIVERDALE ROAD ARE CLOSED NEAR SOUTHERN REGIONAL HOSPITAL.

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, 2.5 hours before the alert went out and 32 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 2009-09-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1463 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 2009-09-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 42 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
1463 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
466 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
42 m²/s²
0-3 km storm-relative helicity
54 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.

000 
WGUS52 KFFC 191427
FFWFFC
GAC063-113-121-192015-
/O.NEW.KFFC.FF.W.0025.090919T1427Z-090919T2015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1027 AM EDT SAT SEP 19 2009

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHWESTERN CLAYTON COUNTY IN NORTH CENTRAL GEORGIA
  NORTHERN FAYETTE COUNTY IN NORTH CENTRAL GEORGIA
  CENTRAL FULTON COUNTY IN NORTH CENTRAL GEORGIA

* UNTIL 415 PM EDT

* AT 1016 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  VERY HEAVY RAIN FROM THUNDERSTORMS OVER THE WARNED AREA. RADAR
  RAINFALL ESTIMATES OF 2 TO 3 INCHES HAVE FALLEN OVER THE AREA
  DURING THE LAST TWO HOURS...AND AT LEAST ANOTHER 1 TO 2 INCHES 
  CAN BE EXPECTED AS ADDITIONAL RAINFALL MOVES OVER THE WARNED AREA.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO FOREST
  PARK...GRANT PARK-ZOO ATLANTA...MIDTOWN...HAPEVILLE...EAST POINT...
  COLLEGE PARK...ATLANTA AND HARTSFIELD-JACKSON AIRPORT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...AS WELL AS HIGHWAYS AND UNDERPASSES.
ADDITIONALLY...COUNTRY ROADS AND FARMLANDS ALONG THE BANKS OF 
CREEKS...STREAMS AND OTHER LOW LYING AREAS ARE SUBJECT TO FLOODING. 

THE RAIN IS FALLING ALONG THE HEADWATERS OF CAMP CREEK IN FULTON 
COUNTY...MORNING CREEK IN FULTON AND FAYETTE COUNTIES...AND THE 
FLINT RIVER IN CLAYTON COUNTY. THESE AND OTHER NEARBY CREEKS MAY 
BEGIN TO SEE RAPID RISES IN THE NEXT FEW HOURS.

IF YOU SEE SIGNIFICANT FLOODING CALL THE NATIONAL WEATHER SERVICE
TOLL FREE AT 1 8 6 6 7 6 3 4 4 6 6.

&&

LAT...LON 3369 8463 3378 8452 3382 8434 3350 8434
      3349 8460

$$
2 follow-up statements
000 
WGUS72 KFFC 191722
FFSFFC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
122 PM EDT SAT SEP 19 2009

GAC063-113-121-192015-
/O.CON.KFFC.FF.W.0025.000000T0000Z-090919T2015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
FAYETTE GA-CLAYTON GA-FULTON GA-
122 PM EDT SAT SEP 19 2009

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 415 PM EDT FOR
CENTRAL FULTON...NORTHWESTERN CLAYTON AND NORTHERN FAYETTE
COUNTIES...

AT 117 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A SHOWERS AND THUNDERSTORMS PRODUCING FLASH FLOODING OVER 
THE WARNED AREA. CAMP CREEK HAS STARTED COMING OUT OF ITS BANKS... 
AND PORTIONS OF INTERSTATE 75 NEAR FOREST PARK IN CLAYTON COUNTY 
HAVE BEEN CLOSED DUE TO HIGH WATER.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO GRANT
PARK-ZOO ATLANTA...MIDTOWN...HAPEVILLE...EAST POINT AND ATLANTA

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...AS WELL AS HIGHWAYS AND UNDERPASSES.
ADDITIONALLY...COUNTRY ROADS AND FARMLANDS ALONG THE BANKS OF 
CREEKS...STREAMS AND OTHER LOW LYING AREAS ARE SUBJECT TO FLOODING. 
CAMP CREEK...MORNING CREEK...AND THE HEADWATERS OF THE FLINT RIVER 
WILL ALL BE COMING OUT OF THEIR BANKS.

IF YOU SEE SIGNIFICANT FLOODING CALL THE NATIONAL WEATHER SERVICE
TOLL FREE AT 1 8 6 6 7 6 3 4 4 6 6.

&&

LAT...LON 3369 8463 3378 8452 3382 8434 3350 8434
      3349 8460

$$
000 
WGUS72 KFFC 192011
FFSFFC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
411 PM EDT SAT SEP 19 2009

GAC063-113-121-192015-
/O.CON.KFFC.FF.W.0025.000000T0000Z-090919T2015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
FAYETTE GA-CLAYTON GA-FULTON GA-
411 PM EDT SAT SEP 19 2009

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 415 PM EDT FOR
CENTRAL FULTON...NORTHWESTERN CLAYTON AND NORTHERN FAYETTE
COUNTIES...

AT 345 PM EDT...THE HEAVY RAIN OVER THE WARNED AREA EARLIER THIS 
MORNING HAD DIMINISHED TO ONLY LIGHT RAIN. RADAR ESTIMATED RAINFALL 
AMOUNTS OF 2 TO 5 INCHES HAVE OCCURRED IN THIS AREA. THE ATLANTA 
HARTSFIELD JACKSON INTERNATIONAL AIRPORT HAS OBSERVED 3.70 INCHES 
OF RAIN SINCE THIS MORNING. 

AT 330 PM EDT...THE SOUTH RIVER AT FORREST PARK ROAD AROUND 3 MILES 
NORTHEAST OF HAPEVILLE WAS AT 16.6 FEET AND SLOWLY RISING. FLOOD 
STAGE IS 15 FEET. THE RIVER SHOULD BE CRESTING SOON AND BEGIN TO
FALL BELOW FLOOD STAGE BY 6 PM EDT.

AT 330 PM EDT...THE INTRENCHMENT CREEK AT CONSTITUTION ROAD AROUND
6 MILES SOUTHEAST OF ATLANTA WAS AT 8.7 FEET AND FALLING. THE CREEK 
CRESTED AT 11.8 FEET AT 130 PM EDT.  FLOOD STAGE IS 11.0 FEET. THE 
CREEK WILL CONTINUE TO FALL.

HIGH WATER IS MOVING DOWN THE UPPER FLINT RIVER FROM NEAR THE 
ATLANTA AIRPORT THROUGH RIVERDALE.  

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO GRANT
PARK-ZOO ATLANTA...MIDTOWN...HAPEVILLE...EAST POINT AND ATLANTA

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.

&&

LAT...LON 3369 8463 3378 8452 3382 8434 3350 8434
      3349 8460

$$
16

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 19, 1:58 AM EDTRiver Flood WarningFFCPulaski8 hr
Sep 19, 11:33 AM EDTFlash Flood WarningFFCDeKalb, Fulton, Gwinnett6 hr
Sep 19, 4:32 PM EDTAreal Flood WarningFFCClayton, Fulton6 hr
Sep 19, 5:30 PM EDTRiver Flood WarningFFCDeKalb, Rockdale4 hr
Sep 19, 5:30 PM EDTRiver Flood WarningFFCNewton, Rockdale5 days

Nearby

Flash Flood Warnings in Georgia, 2009Every flash flood warning in 2009

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.