Alert archive / Georgia / Flash Flood Watches in 2016

Flash Flood Watch 2, NWS Atlanta, GA

February 23, 201661 counties in Georgia

NWS Atlanta, GA issued this flash flood watch at Feb 23, 2016, 3:21 AM EST for 61 counties in Georgia. It took effect at Feb 23, 2016, 6:00 PM EST. It was in force for 16 hr.

The area

The counties it named.

The facts

Issued
Feb 23, 2016, 3:21 AM EST (08:21 UTC)
In effect from
Feb 23, 2016, 6:00 PM EST
Expired
Feb 24, 2016, 10:25 AM EST
In force
16 hr
Issued by
NWS Atlanta, GA
Flood severity
None
All 61 counties

Banks County, GA, Barrow County, GA, Bartow County, GA, Butts County, GA, Carroll County, GA, Catoosa County, GA, Chattooga County, GA, Cherokee County, GA, Clarke County, GA, Clayton County, GA, Cobb County, GA, Coweta County, GA, Dade County, GA, Dawson County, GA, DeKalb County, GA, Douglas County, GA, Fannin County, GA, Fayette County, GA, Floyd County, GA, Forsyth County, GA, Fulton County, GA, Gilmer County, GA, Gordon County, GA, Greene County, GA, Gwinnett County, GA, Hall County, GA, Haralson County, GA, Harris County, GA, Heard County, GA, Henry County, GA, Jackson County, GA, Jasper County, GA, Lamar County, GA, Lumpkin County, GA, Madison County, GA, Meriwether County, GA, Monroe County, GA, Morgan County, GA, Murray County, GA, Muscogee County, GA, Newton County, GA, Oconee County, GA, Oglethorpe County, GA, Paulding County, GA, Pickens County, GA, Pike County, GA, Polk County, GA, Putnam County, GA, Rockdale County, GA, Spalding County, GA, Talbot County, GA, Taliaferro County, GA, Towns County, GA, Troup County, GA, Union County, GA, Upson County, GA, Walker County, GA, Walton County, GA, White County, GA, Whitfield County, GA, Wilkes County, GA

The radar

The Atlanta radar (KFFC), 63 km from the middle of the area, began a volume at 08:20 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 00:00Z, 8.4 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 2016-02-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 57 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 2016-02-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 97 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
57 J/kg
Mixed-layer CIN
-24 J/kg
Mixed-layer LCL
558 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
97 m²/s²
0-3 km storm-relative helicity
172 m²/s²
Significant tornado parameter
-0.0
Supercell composite
-0.0

Open this sounding in Storm Lab

The text

As transmitted.

580 
WGUS62 KFFC 230821
FFAFFC

URGENT - IMMEDIATE BROADCAST REQUESTED
FLOOD WATCH
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
321 AM EST TUE FEB 23 2016

...HEAVY RAIN EXPECTED OVER NORTH AND WEST CENTRAL GEORGIA...

A MOIST AND UNSETTLED PATTERN WILL CONTINUE ACROSS THE FORECAST
AREA THROUGH WEDNESDAY. A STRONG STORM SYSTEM WILL MOVE THROUGH
THE TENNESSEE VALLEY TONIGHT THROUGH WEDNESDAY...AND ENHANCED
RAINFALL AMOUNTS ARE EXPECTED AS THE ASSOCIATED FRONT PUSHES
THROUGH THE STATE. THE HIGH EXPECTED RAINFALL AMOUNTS...COMBINED
WITH ALREADY SATURATED CONDITIONS...WILL KEEP THE FLASH FLOOD RISK
HIGH THROUGH EARLY WEDNESDAY EVENING.

GAZ001>009-011>016-019>025-027-030>039-041>060-066>071-078-079-
089-231630-
/O.NEW.KFFC.FF.A.0002.160223T2300Z-160224T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DADE-WALKER-CATOOSA-WHITFIELD-MURRAY-FANNIN-GILMER-UNION-TOWNS-
CHATTOOGA-GORDON-PICKENS-DAWSON-LUMPKIN-WHITE-FLOYD-BARTOW-
CHEROKEE-FORSYTH-HALL-BANKS-JACKSON-MADISON-POLK-PAULDING-COBB-
NORTH FULTON-GWINNETT-BARROW-CLARKE-OCONEE-OGLETHORPE-WILKES-
HARALSON-CARROLL-DOUGLAS-SOUTH FULTON-DEKALB-ROCKDALE-WALTON-
NEWTON-MORGAN-GREENE-TALIAFERRO-HEARD-COWETA-FAYETTE-CLAYTON-
SPALDING-HENRY-BUTTS-JASPER-PUTNAM-TROUP-MERIWETHER-PIKE-UPSON-
LAMAR-MONROE-HARRIS-TALBOT-MUSCOGEE-
INCLUDING THE CITIES OF...CALHOUN...DAHLONEGA...CLEVELAND...
ROME...CARTERSVILLE...GAINESVILLE...MARIETTA...ATLANTA...
LAWRENCEVILLE...ATHENS...CARROLLTON...DOUGLASVILLE...EAST POINT...
DECATUR...CONYERS...COVINGTON...NEWNAN...PEACHTREE CITY...
GRIFFIN...COLUMBUS
321 AM EST TUE FEB 23 2016

...FLASH FLOOD WATCH IN EFFECT FROM THIS EVENING THROUGH
WEDNESDAY AFTERNOON...

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* FLASH FLOOD WATCH FOR NORTH AND WEST CENTRAL GEORGIA.

* FROM 6 PM TODAY THROUGH 6 PM WEDNESDAY

* RAINFALL AMOUNTS OF 1 TO 3 INCHES ARE POSSIBLE THROUGH
  WEDNESDAY...AND LOCALLY HIGHER AMOUNTS CAN BE EXPECTED...
  PARTICULARLY ACROSS THE ATLANTA METRO AREA AND NORTHEAST GEORGIA
  MOUNTAINS.

* PERIODS OF HEAVY RAIN WILL COMBINE WITH THE ALREADY SATURATED
  CONDITIONS TO ALLOW LARGE AMOUNTS OF RUN OFF INTO NEARBY STREAMS...
  CREEKS AND RIVERS...AND MINOR FLOODING IS POSSIBLE. ISOLATED
  FLASH FLOODING WILL ALSO BE POSSIBLE IF HEAVY RAIN REPEATEDLY
  MOVES OVER THE SAME AREA. STORM DRAINS AND DITCHES MAY BECOME
  QUICKLY CLOGGED WITH DEBRIS AND CAUSE EXTENSIVE STREET FLOODING
  AND ROAD PONDING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD
TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION.

YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
SHOULD FLASH FLOOD WARNINGS BE ISSUED.

&&

$$
3 follow-up statements
829 
WGUS62 KFFC 231921
FFAFFC

FLOOD WATCH
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
221 PM EST TUE FEB 23 2016

...HEAVY RAIN EXPECTED OVER NORTH AND WEST CENTRAL GEORGIA...

A MOIST AND UNSETTLED PATTERN WILL CONTINUE ACROSS THE FORECAST
AREA THROUGH WEDNESDAY. A STRONG STORM SYSTEM WILL MOVE THROUGH
THE TENNESSEE VALLEY TONIGHT THROUGH WEDNESDAY...AND ENHANCED
RAINFALL AMOUNTS ARE EXPECTED AS THE ASSOCIATED FRONT PUSHES
THROUGH THE STATE. THE HIGH EXPECTED RAINFALL AMOUNTS...COMBINED
WITH ALREADY SATURATED CONDITIONS...WILL KEEP THE FLASH FLOOD
RISK HIGH THROUGH EARLY WEDNESDAY EVENING.

GAZ001>009-011>016-019>025-027-030>039-041>060-066>071-078-079-
089-241000-
/O.CON.KFFC.FF.A.0002.160223T2300Z-160224T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DADE-WALKER-CATOOSA-WHITFIELD-MURRAY-FANNIN-GILMER-UNION-TOWNS-
CHATTOOGA-GORDON-PICKENS-DAWSON-LUMPKIN-WHITE-FLOYD-BARTOW-
CHEROKEE-FORSYTH-HALL-BANKS-JACKSON-MADISON-POLK-PAULDING-COBB-
NORTH FULTON-GWINNETT-BARROW-CLARKE-OCONEE-OGLETHORPE-WILKES-
HARALSON-CARROLL-DOUGLAS-SOUTH FULTON-DEKALB-ROCKDALE-WALTON-
NEWTON-MORGAN-GREENE-TALIAFERRO-HEARD-COWETA-FAYETTE-CLAYTON-
SPALDING-HENRY-BUTTS-JASPER-PUTNAM-TROUP-MERIWETHER-PIKE-UPSON-
LAMAR-MONROE-HARRIS-TALBOT-MUSCOGEE-
INCLUDING THE CITIES OF...CALHOUN...DAHLONEGA...CLEVELAND...
ROME...CARTERSVILLE...GAINESVILLE...MARIETTA...ATLANTA...
LAWRENCEVILLE...ATHENS...CARROLLTON...DOUGLASVILLE...EAST POINT...
DECATUR...CONYERS...COVINGTON...NEWNAN...PEACHTREE CITY...
GRIFFIN...COLUMBUS
221 PM EST TUE FEB 23 2016

...FLASH FLOOD WATCH REMAINS IN EFFECT FROM 6 PM EST THIS EVENING
THROUGH WEDNESDAY AFTERNOON...

THE FLASH FLOOD WATCH CONTINUES FOR

* PORTIONS OF CENTRAL GEORGIA...EAST CENTRAL GEORGIA...NORTH 
  CENTRAL GEORGIA...NORTHEAST GEORGIA...NORTHWEST GEORGIA AND 
  WEST CENTRAL GEORGIA...INCLUDING THE FOLLOWING IN CENTRAL ...
  GEORGIA...BUTTS...JASPER...MONROE AND PUTNAM. IN EAST CENTRAL 
  GEORGIA...GREENE...TALIAFERRO AND WILKES. IN NORTH CENTRAL 
  GEORGIA...BARROW...CHEROKEE...CLAYTON...COBB...DAWSON... 
  DEKALB...DOUGLAS...FANNIN...FAYETTE...FORSYTH...GILMER... 
  GWINNETT...HALL...HENRY...LUMPKIN...MORGAN...NEWTON...NORTH 
  FULTON...PICKENS...ROCKDALE...SOUTH FULTON...UNION AND WALTON. 
  IN NORTHEAST GEORGIA...BANKS...CLARKE...JACKSON...MADISON... 
  OCONEE...OGLETHORPE...TOWNS AND WHITE. IN NORTHWEST GEORGIA... 
  BARTOW...CARROLL...CATOOSA...CHATTOOGA...DADE...FLOYD... 
  GORDON...HARALSON...MURRAY...PAULDING...POLK...WALKER AND 
  WHITFIELD. IN WEST CENTRAL GEORGIA...COWETA...HARRIS...HEARD...
   LAMAR...MERIWETHER...MUSCOGEE...PIKE...SPALDING...TALBOT... 
  TROUP AND UPSON. 

* FROM 6 PM EST THIS EVENING THROUGH WEDNESDAY AFTERNOON

* RAINFALL AMOUNTS OF 1 TO 3 INCHES ARE POSSIBLE THROUGH 
  WEDNESDAY...AND LOCALLY HIGHER AMOUNTS CAN BE EXPECTED... 
  PARTICULARLY ACROSS THE ATLANTA METRO AREA AND NORTHEAST 
  GEORGIA MOUNTAINS. 

* PERIODS OF HEAVY RAIN WILL COMBINE WITH THE ALREADY SATURATED 
  CONDITIONS TO ALLOW LARGE AMOUNTS OF RUN OFF INTO NEARBY 
  STREAMS... CREEKS AND RIVERS...AND MINOR FLOODING IS POSSIBLE. 
  ISOLATED FLASH FLOODING WILL ALSO BE POSSIBLE IF HEAVY RAIN 
  REPEATEDLY MOVES OVER THE SAME AREA. STORM DRAINS AND DITCHES 
  MAY BECOME QUICKLY CLOGGED WITH DEBRIS AND CAUSE EXTENSIVE 
  STREET FLOODING AND ROAD PONDING. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD
TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION.

YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
SHOULD FLASH FLOOD WARNINGS BE ISSUED.

&&

$$
704 
WGUS62 KFFC 240826
FFAFFC

FLOOD WATCH
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
326 AM EST WED FEB 24 2016

...HEAVY RAIN HAS RESULTED IN MINOR FLOODING ACROSS PARTS OF
NORTH AND CENTRAL GEORGIA...

A MOIST AND UNSETTLED PATTERN WILL CONTINUE ACROSS THE FORECAST
AREA AS A STRONG STORM SYSTEM MOVES ACROSS THE TENNESSEE VALLEY
AND DRAGS A COLD FRONT ACROSS THE AREA TODAY. THE WIDESPREAD
SHOWERS AND STORMS OVER ALREADY SATURATED GROUNDS HAS RESULTED IN
FLOODING ALONG LOW LYING FLOOD PRONE AREAS. 

GAZ001>009-011>016-019>025-027-030>039-041>060-066>071-078-079-
089-242300-
/O.CON.KFFC.FF.A.0002.000000T0000Z-160224T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DADE-WALKER-CATOOSA-WHITFIELD-MURRAY-FANNIN-GILMER-UNION-TOWNS-
CHATTOOGA-GORDON-PICKENS-DAWSON-LUMPKIN-WHITE-FLOYD-BARTOW-
CHEROKEE-FORSYTH-HALL-BANKS-JACKSON-MADISON-POLK-PAULDING-COBB-
NORTH FULTON-GWINNETT-BARROW-CLARKE-OCONEE-OGLETHORPE-WILKES-
HARALSON-CARROLL-DOUGLAS-SOUTH FULTON-DEKALB-ROCKDALE-WALTON-
NEWTON-MORGAN-GREENE-TALIAFERRO-HEARD-COWETA-FAYETTE-CLAYTON-
SPALDING-HENRY-BUTTS-JASPER-PUTNAM-TROUP-MERIWETHER-PIKE-UPSON-
LAMAR-MONROE-HARRIS-TALBOT-MUSCOGEE-
INCLUDING THE CITIES OF...CALHOUN...DAHLONEGA...CLEVELAND...
ROME...CARTERSVILLE...GAINESVILLE...MARIETTA...ATLANTA...
LAWRENCEVILLE...ATHENS...CARROLLTON...DOUGLASVILLE...EAST POINT...
DECATUR...CONYERS...COVINGTON...NEWNAN...PEACHTREE CITY...
GRIFFIN...COLUMBUS
326 AM EST WED FEB 24 2016

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH THIS AFTERNOON...

THE FLASH FLOOD WATCH CONTINUES FOR

* NORTH AND PORTIONS OF CENTRAL GEORGIA.

* THROUGH 6 PM THIS EVENING

* RAINFALL AMOUNTS OF 2 TO 3 INCHES HAVE ALREADY FALLEN ACROSS
  THE AREA SINCE EARLY TUESDAY AND ANOTHER INCH IS POSSIBLE TODAY.

* THESE RAINFALL AMOUNTS OVER SATURATED GROUNDS WILL CONTINUE TO
  RUN OFF INTO AREA STREAMS... CREEKS AND RIVERS... AND CAUSE
  MINOR FLOODING. NUMEROUS CREEKS AND RIVERS ARE ALREADY IN
  FLOOD... AND ADDITIONAL FLOOD WARNINGS ARE EXPECTED TODAY ALONG
  THE TYPICAL FLOOD PRONE STREAMS. ISOLATED FLASH FLOODING WILL
  ALSO BE POSSIBLE TODAY WHERE STORM DRAINS AND DITCHES BECOME
  CLOGGED WITH DEBRIS AND CAUSE STREET FLOODING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD
TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION.

YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
SHOULD FLASH FLOOD WARNINGS BE ISSUED.

&&

$$
176 
WGUS62 KFFC 241525
FFAFFC

FLOOD WATCH
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1025 AM EST WED FEB 24 2016


GAZ001>009-011>016-019>025-027-030>039-041>060-066>071-078-079-
089-241630-
/O.CAN.KFFC.FF.A.0002.000000T0000Z-160224T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DADE-WALKER-CATOOSA-WHITFIELD-MURRAY-FANNIN-GILMER-UNION-TOWNS-
CHATTOOGA-GORDON-PICKENS-DAWSON-LUMPKIN-WHITE-FLOYD-BARTOW-
CHEROKEE-FORSYTH-HALL-BANKS-JACKSON-MADISON-POLK-PAULDING-COBB-
NORTH FULTON-GWINNETT-BARROW-CLARKE-OCONEE-OGLETHORPE-WILKES-
HARALSON-CARROLL-DOUGLAS-SOUTH FULTON-DEKALB-ROCKDALE-WALTON-
NEWTON-MORGAN-GREENE-TALIAFERRO-HEARD-COWETA-FAYETTE-CLAYTON-
SPALDING-HENRY-BUTTS-JASPER-PUTNAM-TROUP-MERIWETHER-PIKE-UPSON-
LAMAR-MONROE-HARRIS-TALBOT-MUSCOGEE-
INCLUDING THE CITIES OF...CALHOUN...DAHLONEGA...CLEVELAND...
ROME...CARTERSVILLE...GAINESVILLE...MARIETTA...ATLANTA...
LAWRENCEVILLE...ATHENS...CARROLLTON...DOUGLASVILLE...EAST POINT...
DECATUR...CONYERS...COVINGTON...NEWNAN...PEACHTREE CITY...
GRIFFIN...COLUMBUS
1025 AM EST WED FEB 24 2016

...FLASH FLOOD WATCH IS CANCELLED...

THE FLASH FLOOD WATCH FOR PORTIONS OF CENTRAL GEORGIA...EAST
CENTRAL GEORGIA...NORTH CENTRAL GEORGIA...NORTHEAST GEORGIA...
NORTHWEST GEORGIA AND WEST CENTRAL GEORGIA HAS BEEN CANCELLED.
RAINFALL ASSOCIATED WITH A PASSING COLD FRONT HAS PUSHED OFF TO
THE EAST. 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 23, 12:04 PM ESTRiver Flood WarningFFCForsyth33 hr
Feb 23, 12:04 PM ESTRiver Flood WarningFFCForsyth, Fulton66 hr
Feb 23, 12:04 PM ESTRiver Flood WarningFFCClarke, Greene, Oconee3 days
Feb 23, 1:23 PM ESTWind AdvisoryFFCBaldwin, Banks, Barrow, Bartow, Bibb, Bleckley and 90 more36 hr
Feb 23, 3:40 PM ESTRiver Flood WarningFFCCatoosa64 hr
Feb 23, 3:40 PM ESTRiver Flood WarningFFCDade65 hr
Feb 23, 3:40 PM ESTRiver Flood WarningFFCMurray, Whitfield65 hr
Feb 23, 3:40 PM ESTRiver Flood WarningFFCWhitfield4 days

Nearby

Flash Flood Watches in Georgia, 2016Every flash flood watch in 2016

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.