Alert archive / Georgia / Flash Flood Warnings in 2016

Flash Flood Warning 2, NWS Atlanta, GA

February 3, 2016Johnson County, Georgia

NWS Atlanta, GA issued this flash flood warning at Feb 3, 2016, 4:24 PM EST for Johnson 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
Feb 3, 2016, 4:24 PM EST (21:24 UTC)
Expired
Feb 3, 2016, 10:15 PM EST
In force
6 hr
Issued by
NWS Atlanta, GA
Area
Storm-based polygon
Flood severity
None

County Johnson County, GA

The radar

The Robins AFB radar (KJGX), 71 km from the middle of the area, began a volume at 21:24 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, 9.4 hours before the alert went out and 193 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 2016-02-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 285 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 2016-02-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 385 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
285 J/kg
Mixed-layer CIN
-8 J/kg
Mixed-layer LCL
626 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
385 m²/s²
0-3 km storm-relative helicity
537 m²/s²
Significant tornado parameter
0.7
Supercell composite
5.6

Open this sounding in Storm Lab

The text

As transmitted.

675 
WGUS52 KFFC 032124
FFWFFC
GAC167-040315-
/O.NEW.KFFC.FF.W.0002.160203T2124Z-160204T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
424 PM EST WED FEB 3 2016

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  JOHNSON COUNTY IN EAST CENTRAL GEORGIA...

* UNTIL 1015 PM EST

* AT 421 PM EST...DOPPLER RADAR INDICATED HEAVY RAIN ACROSS THE
  WARNED AREA. UP TO 2.5 INCHES OF RAIN HAVE ALREADY FALLEN IN THE
  WARNED AREA...WITH LOCALLY HIGHER AMOUNTS ABOVE 3 INCHES. FLASH
  FLOODING IS OCCURRING AND EMERGENCY MANAGEMENT HAS INDICATED A FEW
  ROADS HAVE BEEN CLOSED.

* AN ADDITIONAL 1 TO 1.5 INCHES OF RAIN ARE EXPECTED THROUGH INTO
  THE EVENING.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  WRIGHTSVILLE...KITE...SPANN...MEEKS...NEW HOME AND SCOTT. 

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 3272 8245 3269 8250 3264 8247 3264 8251
      3259 8258 3257 8259 3253 8267 3261 8267
      3266 8279 3269 8279 3270 8282 3279 8268
      3278 8266 3282 8256 3282 8253 3277 8247
      3276 8244

$$
1 follow-up statement
480 
WGUS72 KFFC 040306
FFSFFC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1006 PM EST WED FEB 3 2016

GAC167-040315-
/O.EXP.KFFC.FF.W.0002.000000T0000Z-160204T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
JOHNSON GA-
1006 PM EST WED FEB 3 2016

...THE FLASH FLOOD WARNING FOR JOHNSON COUNTY WILL EXPIRE AT 1015 PM
EST...

THE HEAVIEST RAIN HAS ENDED...AND THE THREAT OF FLASH FLOODING HAS
DIMINISHED. SOME ROADS MAY REMAIN CLOSED. DO NOT DRIVE AROUND
BARRICADES. ADDITIONAL RAIN IS STILL POSSIBLE OVERNIGHT...BUT NEW
RAINFALL AMOUNTS ARE EXPECTED TO BE LIGHT. 

LAT...LON 3272 8245 3269 8250 3264 8247 3264 8251
      3259 8258 3257 8259 3253 8267 3261 8267
      3266 8279 3269 8279 3270 8282 3279 8268
      3278 8266 3282 8256 3282 8253 3277 8247
      3276 8244

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 3, 3:16 AM ESTSpecial Weather StatementFFCDade29 min
Feb 3, 3:45 AM ESTSpecial Weather StatementFFCChattooga, Walker30 min
Feb 3, 4:16 AM ESTSpecial Weather StatementFFCChattooga, Floyd, Walker, Whitfield29 min
Feb 3, 4:32 AM ESTSpecial Weather StatementFFCHaralson, Polk28 min
Feb 3, 4:42 AM ESTRiver Flood WarningFFCDade46 hr
Feb 3, 4:45 AM ESTSpecial Weather StatementFFCMurray30 min
Feb 3, 5:00 AM ESTSpecial Weather StatementFFCBartow, Haralson, Paulding30 min
Feb 3, 5:02 AM ESTFlash Flood WatchFFCBaldwin, Banks, Barrow, Bibb, Bleckley, Butts and 70 more17 hr
Feb 3, 5:22 AM ESTFlash Flood WarningFFCCatoosa, Walker6 hr
Feb 3, 5:37 AM ESTSpecial Weather StatementFFCCherokee, Pickens23 min
Feb 3, 6:02 AM ESTSpecial Weather StatementFFCCherokee, Cobb, Fulton28 min
Feb 3, 6:18 AM ESTRiver Flood WarningFFCForsyth17 hr
Feb 3, 6:18 AM ESTRiver Flood WarningFFCForsyth, Fulton51 hr
Feb 3, 6:26 AM ESTSpecial Weather StatementFFCDeKalb, Forsyth, Fulton, Gwinnett34 min
Feb 3, 6:50 AM ESTSpecial Weather StatementFFCCoweta25 min
Feb 3, 7:00 AM ESTSpecial Weather StatementFFCClayton, DeKalb, Gwinnett, Hall30 min
Feb 3, 7:29 AM ESTSpecial Weather StatementFFCBarrow, Clayton, Gwinnett, Jackson, Rockdale46 min
Feb 3, 7:35 AM ESTSpecial Weather StatementFFCFayette, Henry, Meriwether, Troup25 min
Feb 3, 7:59 AM ESTSpecial Weather StatementFFCFayette, Harris, Henry, Meriwether, Troup31 min
Feb 3, 8:12 AM ESTRiver Flood WarningFFCCatoosa58 hr
Feb 3, 8:13 AM ESTSpecial Weather StatementFFCBarrow, Jackson, Madison, Newton, Rockdale, Walton47 min
Feb 3, 8:28 AM ESTSpecial Weather StatementFFCHarris, Henry, Meriwether, Muscogee, Pike, Spalding and 1 more32 min
Feb 3, 8:43 AM ESTRiver Flood WarningFFCMurray, Whitfield41 hr
Feb 3, 8:43 AM ESTRiver Flood WarningFFCWhitfield66 hr
Feb 3, 8:54 AM ESTSpecial Weather StatementFFCChattahoochee, Marion, Muscogee, Stewart51 min
Feb 3, 8:57 AM ESTRiver Flood WarningFFCDeKalb24 hr
Feb 3, 9:00 AM ESTSpecial Weather StatementFFCLamar, Pike, Talbot, Upson30 min
Feb 3, 9:03 AM ESTRiver Flood WarningFFCGwinnett9 hr
Feb 3, 9:03 AM ESTSpecial Weather StatementFFCButts, Morgan, Newton, Oconee27 min
Feb 3, 9:17 AM ESTSpecial Weather StatementFFCTowns, Union28 min
Feb 3, 9:25 AM ESTSpecial Weather StatementFFCButts, Jasper35 min
Feb 3, 9:30 AM ESTSpecial Weather StatementFFCCrawford, Lamar, Monroe, Taylor, Upson45 min
Feb 3, 9:38 AM ESTRiver Flood WarningFFCDeKalb24 hr
Feb 3, 9:39 AM ESTSpecial Weather StatementFFCMarion, Schley, Webster36 min
Feb 3, 9:45 AM ESTSpecial Weather StatementFFCMorgan30 min
Feb 3, 10:11 AM ESTSpecial Weather StatementFFCBibb, Crawford34 min
Feb 3, 10:18 AM ESTRiver Flood WarningFFCGordon, Murray, Whitfield70 hr
Feb 3, 10:43 AM ESTSpecial Weather StatementFFCBibb32 min
Feb 3, 11:00 AM ESTAreal Flood WarningFFCUnion6 hr
Feb 3, 11:13 AM ESTSpecial Weather StatementFFCBaldwin, Bleckley, Crisp, Dooly, Hancock, Houston and 7 more62 min
Feb 3, 11:26 AM ESTRiver Flood WarningFFCDeKalb, Rockdale29 hr
Feb 3, 11:26 AM ESTRiver Flood WarningFFCNewton, Rockdale38 hr
Feb 3, 11:26 AM ESTRiver Flood WarningFFCBibb, Houston, Jones, Monroe, Twiggs4 days
Feb 3, 11:26 AM ESTRiver Flood WarningFFCClarke, Greene, Oconee64 hr
Feb 3, 11:26 AM ESTRiver Flood WarningFFCJohnson, Washington, Wilkinson4 days
Feb 3, 11:40 AM ESTRiver Flood WarningFFCGwinnett, Walton9 hr
Feb 3, 11:40 AM ESTRiver Flood WarningFFCDeKalb24 hr
Feb 3, 11:57 AM ESTSevere Thunderstorm WarningFFCSumter33 min
Feb 3, 12:17 PM ESTSpecial Weather StatementFFCBleckley, Crisp, Dodge, Dooly, Jefferson, Johnson and 3 more43 min
Feb 3, 12:55 PM ESTSpecial Weather StatementFFCBleckley, Twiggs, Wilkinson35 min
Feb 3, 1:03 PM ESTSpecial Weather StatementFFCCrisp, Dodge, Emanuel, Jefferson, Johnson, Laurens and 5 more42 min
Feb 3, 1:43 PM ESTSpecial Weather StatementFFCBleckley, Crisp, Dodge, Dooly, Glascock, Houston and 9 more47 min
Feb 3, 2:35 PM ESTSpecial Weather StatementFFCBleckley, Crisp, Dodge, Emanuel, Jefferson, Johnson and 4 more25 min
Feb 3, 3:06 PM ESTSpecial Weather StatementFFCBleckley, Crisp, Dodge, Emanuel, Johnson, Laurens and 3 more24 min
Feb 3, 3:32 PM ESTSpecial Weather StatementFFCCrisp, Dodge, Emanuel, Johnson, Laurens, Montgomery and 6 more58 min
Feb 3, 4:37 PM ESTSpecial Weather StatementFFCEmanuel, Montgomery, Telfair, Toombs, Treutlen, Wheeler38 min
Feb 3, 4:47 PM ESTSpecial Weather StatementFFCEmanuel, Montgomery, Telfair, Toombs, Treutlen, Wheeler43 min
Feb 3, 5:59 PM ESTRiver Flood WarningFFCChattooga12 hr
Feb 3, 5:59 PM ESTSpecial Weather StatementFFCBleckley, Crisp, Dodge, Emanuel, Johnson, Laurens and 7 more16 min

Nearby

Flash Flood Warnings in Georgia, 2016Every flash flood warning 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.