Alert archive / Georgia / Flash Flood Warnings in 2015

Flash Flood Warning 1, NWS Atlanta, GA

January 4, 2015Cobb County, Paulding County, Georgia

NWS Atlanta, GA issued this flash flood warning at Jan 4, 2015, 1:15 AM EST for Cobb County, Paulding County, Georgia. It was in force for 6 hr. 1 report 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
Jan 4, 2015, 1:15 AM EST (06:15 UTC)
Expired
Jan 4, 2015, 7:15 AM EST
In force
6 hr
Issued by
NWS Atlanta, GA
Area
Storm-based polygon
Flood severity
None

Counties Cobb County, GA, Paulding County, GA

The radar

The Atlanta radar (KFFC), 58 km from the middle of the area, began a volume at 06:17 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
Jan 4, 2:37 AM ESTFLASH FLOOD1 N Davis Crossroads, GATHE STAGE HEIGHT ON A USGS GAGE ON THE ALLATOONA CREEK AT STILESBORO ROAD NEAR MARS HILL REACHED FLOOD STAGE OF 13 FEET. THE CREEK IS CONTINUING TO RISE SLOWLY. MINOR FLOODING IS OCCURRING IN THE WOODLANDS AND FIELDS NEAR THE CREEK.

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, 6.3 hours before the alert went out and 60 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 00:00Z on 2015-01-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 8 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 00:00Z on 2015-01-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 259 square meters per square second.1939587897Sfc1 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
8 J/kg
Mixed-layer CIN
-62 J/kg
Mixed-layer LCL
456 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
259 m²/s²
0-3 km storm-relative helicity
247 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.

040 
WGUS52 KFFC 040615
FFWFFC
GAC067-223-041215-
/O.NEW.KFFC.FF.W.0001.150104T0615Z-150104T1215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
115 AM EST SUN JAN 4 2015

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  PAULDING COUNTY IN NORTHWESTERN GEORGIA...
  COBB COUNTY IN NORTH CENTRAL GEORGIA...

* UNTIL 715 AM EST SUNDAY
    
* AT 112 AM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
  THUNDERSTORMS WITH HEAVY RAIN PASSING OVER THE WARNED AREA. FLASH
  FLOODING IS EXPECTED TO BEGIN SHORTLY. AROUND TWO INCHES OF RAIN
  HAVE FALLEN DURING THE PAST 6 HOURS AND CREEKS ARE BEGINNING TO
  RISE QUICKLY. FLASH FLOODING IS EXPECTED ON ALLATOONA CREEK WITHIN
  THE NEXT HOUR OR SO.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO 
  MARIETTA...DALLAS...SMYRNA...KENNESAW...ACWORTH...POWDER SPRINGS...
  AUSTELL...HIRAM...BRASWELL...FAIR OAKS...LITHIA SPRINGS...DUE
  WEST...KENNESAW STATE UNIVERSITY...JIM R MILLER PARK...SIX FLAGS
  OVER GEORGIA...BROWNSVILLE...NEW HOPE...NEW GEORGIA...LOST MOUNTAIN
  PARK AND BURNT HICKORY RIDGE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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 3403 8495 3404 8494 3407 8453 3379 8452
      3376 8455 3376 8459 3380 8462 3381 8472
      3379 8473 3377 8485 3377 8488 3380 8497

$$
16
2 follow-up statements
433 
WGUS72 KFFC 040740
FFSFFC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
240 AM EST SUN JAN 4 2015

GAC067-223-041215-
/O.CON.KFFC.FF.W.0001.000000T0000Z-150104T1215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PAULDING GA-COBB GA-
240 AM EST SUN JAN 4 2015

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 715 AM EST SUNDAY
FOR PAULDING AND COBB COUNTIES...

AT 232 AM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR AND AUTOMATED
RAIN GAUGES INDICATED THAT HEAVY RAIN WAS FALLING OVER THE AREA. UP
TO TWO INCHES OF RAIN HAVE ALREADY FALLEN. FLASH FLOODING IS POSSIBLE.

ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE POSSIBLE OVER 
THE WARNED AREA WITHIN THE NEXT FEW HOURS.

AT 230 AM EST...THE STAGE HEIGHT ON ALLATOONA CREEK AT MARS HILL WAS 
12.9 FEET AND RISING SLOWLY. FLOOD STAGE IS 13 FEET. PERIODS OF HEAVY
RAIN WILL CAUSE THE CREEK TO RISE TO NEAR 14 FEET LATER THIS MORNING.
MINOR FLOODING OF WOODLANDS AND FIELDS NEAR THE CREEK WILL CONTINUE
UPSTREAM AND DOWNSTREAM FROM THE GAGE ON STILESBORO ROAD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

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 3403 8495 3404 8494 3407 8453 3379 8452
      3376 8455 3376 8459 3380 8462 3381 8472
      3379 8473 3377 8485 3377 8488 3380 8497

$$
16
563 
WGUS72 KFFC 041039
FFSFFC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
539 AM EST SUN JAN 4 2015

GAC067-223-041215-
/O.CON.KFFC.FF.W.0001.000000T0000Z-150104T1215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PAULDING GA-COBB GA-
539 AM EST SUN JAN 4 2015

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 715 AM EST SUNDAY
FOR PAULDING AND COBB COUNTIES...

AT 535 AM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR AND AUTOMATED
RAIN GAUGES INDICATED THAT HEAVY RAIN WAS FALLING OVER THE AREA. UP
TO 2.5 INCHES OF RAIN HAVE ALREADY FALLEN. FLASH FLOODING IS OCCURRING
IN SOME LOCATIONS SUCH AS ALLATOONA CREEK NEAR MARS HILL AND NOONDAY
CREEK NEAR WOODSTOCK.

ADDITIONAL RAINFALL AMOUNTS UP TO ANOTHER INCH ARE POSSIBLE IN
THE WARNED AREA DURING THE NEXT FEW HOURS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

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 3403 8495 3404 8494 3407 8453 3379 8452
      3376 8455 3376 8459 3380 8462 3381 8472
      3379 8473 3377 8485 3377 8488 3380 8497

$$
16

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 3, 7:06 PM ESTSpecial Weather StatementFFCHaralson, Polk39 min
Jan 3, 7:24 PM ESTSpecial Weather StatementFFCPolk21 min
Jan 3, 7:38 PM ESTSpecial Weather StatementFFCBartow, Paulding37 min
Jan 3, 8:49 PM ESTSpecial Weather StatementFFCGilmer, Union26 min
Jan 3, 9:24 PM ESTSpecial Weather StatementFFCChattooga, Dade, Walker36 min
Jan 3, 9:41 PM ESTSpecial Weather StatementFFCFloyd, Polk49 min
Jan 3, 9:55 PM ESTSpecial Weather StatementFFCCatoosa, Whitfield35 min
Jan 3, 10:08 PM ESTSpecial Weather StatementFFCBartow, Polk22 min
Jan 3, 10:26 PM ESTSpecial Weather StatementFFCHaralson, Paulding34 min
Jan 3, 10:48 PM ESTSpecial Weather StatementFFCDouglas, Fulton27 min
Jan 3, 10:50 PM ESTSpecial Weather StatementFFCBartow, Cherokee25 min
Jan 4, 1:42 AM ESTFlash Flood WarningFFCFloyd, Haralson, Polk6 hr
Jan 4, 2:32 AM ESTFlash Flood WatchFFCBanks, Barrow, Bartow, Carroll, Catoosa, Chattooga and 26 more10 hr
Jan 4, 3:08 AM ESTSpecial Weather StatementFFCHaralson, Paulding, Polk37 min
Jan 4, 3:32 AM ESTSpecial Weather StatementFFCHaralson, Paulding28 min
Jan 4, 3:40 AM ESTRiver Flood WarningFFCForsyth22 hr
Jan 4, 4:00 AM ESTSpecial Weather StatementFFCHaralson30 min
Jan 4, 4:26 AM ESTSpecial Weather StatementFFCCarroll, Paulding34 min
Jan 4, 4:45 AM ESTSpecial Weather StatementFFCCobb30 min
Jan 4, 5:04 AM ESTFlash Flood WarningFFCCherokee, Cobb, Forsyth, Fulton6 hr
Jan 4, 5:10 AM ESTSpecial Weather StatementFFCDeKalb, Forsyth, Fulton35 min
Jan 4, 5:11 AM ESTSpecial Weather StatementFFCCoweta, Fayette, Troup34 min
Jan 4, 5:37 AM ESTSpecial Weather StatementFFCGwinnett23 min
Jan 4, 5:40 AM ESTSpecial Weather StatementFFCClayton, Fayette, Henry, Meriwether, Pike, Spalding35 min
Jan 4, 5:53 AM ESTRiver Flood WarningFFCPolk10 hr
Jan 4, 5:53 AM ESTRiver Flood WarningFFCForsyth, Fulton46 hr
Jan 4, 6:00 AM ESTSpecial Weather StatementFFCBarrow, Jackson30 min
Jan 4, 6:10 AM ESTSpecial Weather StatementFFCHenry, Newton, Pike, Spalding35 min
Jan 4, 6:30 AM ESTSpecial Weather StatementFFCMuscogee30 min
Jan 4, 6:40 AM ESTSpecial Weather StatementFFCButts, Spalding35 min
Jan 4, 6:42 AM ESTSpecial Weather StatementFFCMadison33 min
Jan 4, 6:59 AM ESTSpecial Weather StatementFFCChattahoochee, Marion, Talbot31 min
Jan 4, 7:21 AM ESTFlash Flood WarningFFCDeKalb4 hr
Jan 4, 7:23 AM ESTRiver Flood WarningFFCDawson, Forsyth14 hr
Jan 4, 7:31 AM ESTSpecial Weather StatementFFCUpson29 min
Jan 4, 8:18 AM ESTSpecial Weather StatementFFCBibb27 min
Jan 4, 8:23 AM ESTSevere Thunderstorm WarningFFCBibb, Jones, Monroe24 min
Jan 4, 9:12 AM ESTRiver Flood WarningFFCPolk7 hr
Jan 4, 9:39 AM ESTRiver Flood WarningFFCCherokee7 days
Jan 4, 10:34 AM ESTRiver Flood WarningFFCHaralson7 days
Jan 4, 10:50 AM ESTRiver Flood WarningFFCCherokee, Cobb7 days
Jan 4, 10:50 AM ESTRiver Flood WarningFFCCherokee7 days
Jan 4, 11:07 AM ESTSpecial Weather StatementFFCDooly23 min
Jan 4, 11:37 AM ESTSevere Thunderstorm WarningFFCDodge, Pulaski23 min
Jan 4, 12:01 PM ESTSpecial Weather StatementFFCLaurens29 min
Jan 4, 12:02 PM ESTRiver Flood WarningFFCGwinnett, Walton6 hr
Jan 4, 12:31 PM ESTRiver Flood WarningFFCCobb7 days
Jan 4, 12:31 PM ESTSpecial Weather StatementFFCTreutlen29 min
Jan 4, 12:38 PM ESTTornado WarningFFCEmanuel, Laurens, Treutlen37 min
Jan 4, 12:52 PM ESTRiver Flood WarningFFCFloyd, Polk7 days
Jan 4, 1:06 PM ESTTornado WarningFFCEmanuel24 min
Jan 4, 1:38 PM ESTRiver Flood WarningFFCCherokee19 hr
Jan 4, 3:39 PM ESTRiver Flood WarningFFCWhitfield10 hr

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.