Alert archive / Georgia / Flash Flood Warnings in 2015

Flash Flood Warning 40, NWS Atlanta, GA

December 25, 2015Catoosa County, Dade County, Walker County, Georgia

NWS Atlanta, GA issued this flash flood warning at Dec 25, 2015, 11:35 AM EST for Catoosa County, Dade County, Walker 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
Dec 25, 2015, 11:35 AM EST (16:35 UTC)
Expired
Dec 25, 2015, 2:30 PM EST
In force
3 hr
Issued by
NWS Atlanta, GA
Area
Storm-based polygon
Flood severity
None

Counties Catoosa County, GA, Dade County, GA, Walker County, GA

The radar

The Northeast Alabama radar (KHTX), 89 km from the middle of the area, began a volume at 16:39 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
Dec 25, 12:20 PM ESTFLASH FLOOD6 Nw Ringgold, GAWATER IS POND ON ROADS AND MINOR FLOODING IS ALSO OCCURING.
Dec 25, 12:40 PM ESTFLASH FLOODTrenton, GAAT LEAST A HALF DOZEN ROADS ARE CLOSED AT THIS TIME DUE TO FLOODING AND WATER FLOWIING OVER THE ROADWAYS. MOST OF THE FLOODING IS OCCURING IN AND AROUND TRENTON.

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, 4.6 hours before the alert went out and 173 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 2015-12-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 183 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°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 2015-12-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 225 square meters per square second.19395878Sfc1 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
183 J/kg
Mixed-layer CIN
-55 J/kg
Mixed-layer LCL
578 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
225 m²/s²
0-3 km storm-relative helicity
207 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.9

Open this sounding in Storm Lab

The text

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

929 
WGUS52 KFFC 251635
FFWFFC
GAC047-083-295-251930-
/O.NEW.KFFC.FF.W.0040.151225T1635Z-151225T1930Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1135 AM EST FRI DEC 25 2015

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WALKER COUNTY IN NORTHWESTERN GEORGIA...
  CATOOSA COUNTY IN NORTHWESTERN GEORGIA...
  DADE COUNTY IN NORTHWESTERN GEORGIA...

* UNTIL 230 PM EST
    
* AT 1133 AM EST...DOPPLER RADAR INDICATED A LINE OF SHOWERS AND
  THUNDERSTORMS PRODUCING HEAVY RAIN MOVING ACROSS THE WARNED AREA.
  UP TO THREE INCHES OF RAIN HAVE ALREADY FALLEN AND ANOTHER ONE
  TOTHREE INCHES ARE POSSIBLE THROUGH EARLY TO MID AFTERNOON. FLASH
  FLOODING IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  LAFAYETTE...RINGGOLD...TRENTON...FORT OGLETHORPE...ROSSVILLE...
  CHICKAMAUGA...LOOKOUT MOUNTAIN...LA FAYETTE...RISING FAWN...
  LAKEVIEW...NAOMI...BOYNTON...SUTTLES MILL...NOBLE...COOPER
  HEIGHTS...NEW ENGLAND...COLE CITY...INDIAN SPRINGS...HOOKER AND
  FAIRVIEW.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

DO NOT ENTER OR CROSS FLOWING WATER OR WATER OF UNKNOWN DEPTH. 

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 3499 8498 3497 8499 3497 8500 3495 8500
      3491 8502 3488 8501 3486 8503 3486 8506
      3482 8506 3482 8513 3473 8517 3472 8517
      3472 8505 3459 8506 3459 8553 3498 8560

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 24, 7:04 PM ESTSpecial Weather StatementFFCHarris, Meriwether41 min
Dec 24, 7:32 PM ESTSpecial Weather StatementFFCFayette43 min
Dec 24, 7:44 PM ESTRiver Flood WarningFFCCoweta, Fayette24 hr
Dec 24, 7:44 PM ESTRiver Flood WarningFFCDeKalb24 hr
Dec 24, 7:44 PM ESTRiver Flood WarningFFCNewton, Rockdale24 hr
Dec 24, 7:48 PM ESTSpecial Weather StatementFFCChattahoochee, Marion42 min
Dec 24, 8:19 PM ESTFlash Flood WarningFFCChattahoochee, Stewart6 hr
Dec 24, 8:35 PM ESTSpecial Weather StatementFFCChattahoochee, Marion55 min
Dec 24, 9:15 PM ESTRiver Flood WarningFFCFloyd12 days
Dec 24, 9:27 PM ESTSpecial Weather StatementFFCMacon, Marion, Schley63 min
Dec 24, 9:35 PM ESTRiver Flood WarningFFCDade70 hr
Dec 24, 9:45 PM ESTSevere Thunderstorm WarningFFCMacon, Schley, Taylor45 min
Dec 24, 10:02 PM ESTRiver Flood WarningFFCDouglas, Fulton24 hr
Dec 24, 10:15 PM ESTRiver Flood WarningFFCCobb, Douglas49 hr
Dec 24, 10:23 PM ESTRiver Flood WarningFFCNewton, Rockdale48 hr
Dec 24, 10:30 PM ESTSpecial Weather StatementFFCPeach30 min
Dec 24, 10:32 PM ESTSpecial Weather StatementFFCPeach43 min
Dec 24, 11:07 PM ESTRiver Flood WarningFFCGordon11 days
Dec 24, 11:14 PM ESTSpecial Weather StatementFFCBibb46 min
Dec 24, 11:51 PM ESTRiver Flood WarningFFCGordon57 hr
Dec 25, 12:03 AM ESTSpecial Weather StatementFFCMuscogee42 min
Dec 25, 1:02 AM ESTAreal Flood WarningFFCCoweta, Fayette, Harris, Lamar, Meriwether, Pike and 4 more9 hr
Dec 25, 1:35 AM ESTRiver Flood WarningFFCMeriwether, Pike69 hr
Dec 25, 2:08 AM ESTFlash Flood WarningFFCHarris, Meriwether, Talbot, Troup6 hr
Dec 25, 3:24 AM ESTRiver Flood WarningFFCGordon62 hr
Dec 25, 3:30 AM ESTSpecial Weather StatementFFCLamar, Monroe45 min
Dec 25, 3:33 AM ESTSpecial Weather StatementFFCTroup42 min
Dec 25, 4:43 AM ESTSpecial Weather StatementFFCCatoosa, Walker47 min
Dec 25, 5:51 AM ESTSpecial Weather StatementFFCDade39 min
Dec 25, 5:57 AM ESTSpecial Weather StatementFFCHenry48 min
Dec 25, 6:11 AM ESTRiver Flood WarningFFCNewton3 days
Dec 25, 6:15 AM ESTRiver Flood WarningFFCHeard24 hr
Dec 25, 6:19 AM ESTRiver Flood WarningFFCJones, Monroe64 hr
Dec 25, 6:23 AM ESTRiver Flood WarningFFCCobb, Paulding24 hr
Dec 25, 6:28 AM ESTSpecial Weather StatementFFCCatoosa, Dade47 min
Dec 25, 7:44 AM ESTSpecial Weather StatementFFCCatoosa, Chattooga, Dade, Floyd, Gordon, Murray and 2 more61 min
Dec 25, 8:19 AM ESTRiver Flood WarningFFCHeard38 hr
Dec 25, 8:39 AM ESTSpecial Weather StatementFFCMurray21 min
Dec 25, 9:20 AM ESTSpecial Weather StatementFFCDade55 min
Dec 25, 9:27 AM ESTDense Fog AdvisoryFFCBleckley, Crisp, Dodge, Dooly, Emanuel, Johnson and 9 more3 hr
Dec 25, 9:32 AM ESTRiver Flood WarningFFCCatoosa5 days
Dec 25, 9:36 AM ESTRiver Flood WarningFFCFloyd14 days
Dec 25, 9:53 AM ESTRiver Flood WarningFFCNewton60 hr
Dec 25, 10:19 AM ESTSpecial Weather StatementFFCDade71 min
Dec 25, 10:35 AM ESTSpecial Weather StatementFFCCatoosa, Walker70 min
Dec 25, 10:44 AM ESTFlash Flood WarningFFCCatoosa, Dade, Walker46 min
Dec 25, 11:31 AM ESTSpecial Weather StatementFFCCatoosa, Murray, Walker, Whitfield44 min
Dec 25, 11:48 AM ESTFlash Flood WarningFFCMurray, Whitfield3 hr
Dec 25, 11:51 AM ESTSpecial Weather StatementFFCChattooga39 min
Dec 25, 11:56 AM ESTRiver Flood WarningFFCNewton, Walton25 hr
Dec 25, 12:06 PM ESTFlash Flood WarningFFCChattooga3 hr
Dec 25, 12:12 PM ESTSpecial Weather StatementFFCFannin, Gilmer48 min
Dec 25, 12:23 PM ESTFlash Flood WarningFFCFannin, Gilmer3 hr
Dec 25, 12:48 PM ESTSpecial Weather StatementFFCTowns, Union57 min
Dec 25, 12:59 PM ESTFlash Flood WarningFFCFloyd, Gordon3 hr
Dec 25, 1:12 PM ESTRiver Flood WarningFFCWhitfield24 hr
Dec 25, 1:13 PM ESTFlash Flood WarningFFCTowns, Union3 hr
Dec 25, 1:29 PM ESTRiver Flood WarningFFCJefferson, Washington27 hr
Dec 25, 2:28 PM ESTFlash Flood WarningFFCCatoosa, Dade, Walker6 hr
Dec 25, 2:34 PM ESTRiver Flood WarningFFCFloyd8 days
Dec 25, 2:41 PM ESTFlash Flood WarningFFCMurray, Whitfield6 hr
Dec 25, 2:54 PM ESTFlash Flood WarningFFCChattooga6 hr
Dec 25, 3:03 PM ESTFlash Flood WarningFFCFannin, Gilmer6 hr
Dec 25, 4:26 PM ESTAreal Flood WarningFFCFloyd, Gordon6 hr
Dec 25, 5:10 PM ESTRiver Flood WarningFFCMurray24 hr
Dec 25, 5:10 PM ESTRiver Flood WarningFFCGordon7 days
Dec 25, 6:14 PM ESTRiver Flood WarningFFCGordon, Murray, Whitfield6 days

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.