Alert archive / Georgia / Flash Flood Warnings in 2017

Flash Flood Warning 24, NWS Atlanta, GA

June 19, 20179 counties in Georgia

NWS Atlanta, GA issued this flash flood warning at Jun 19, 2017, 11:05 PM EDT for 9 counties in Georgia. It was in force for 6 hr. 5 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
Jun 19, 2017, 11:05 PM EDT (03:05 UTC)
Expired
Jun 20, 2017, 5:00 AM EDT
In force
6 hr
Issued by
NWS Atlanta, GA
Area
Storm-based polygon
Flood severity
None

Counties Greene County, GA, Jasper County, GA, Morgan County, GA, Newton County, GA, Oconee County, GA, Oglethorpe County, GA, Taliaferro County, GA, Walton County, GA, Wilkes County, GA

The radar

The Robins AFB radar (KJGX), 114 km from the middle of the area, began a volume at 03:08 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
Jun 20, 2:00 AM EDTFLOOD1 N Jamestown, GABIG WOODS ROAD CLOSED DUE TO FLOODING BETWEEN COUNTY ROAD 213 AND LEE STREET.
Jun 20, 2:30 AM EDTFLOOD1 Ene Avalon, GABENTON ROAD CLOSED FROM BRIDGE UNTIL MACEDONIA ROAD DUE TO FLOODING.
Jun 20, 2:30 AM EDTFLOODMeadowood Subdivision, GABELCHER ROAD CLOSED DUE TO FLOODING.
Jun 20, 2:30 AM EDTFLASH FLOOD2 Nne Bethany, GAMULTIPLE DRIVEWAYS WERE REPORTED WASHED OUT.
Jun 20, 3:00 AM EDTFLOOD1 Wsw Lassiter, GAKING BOSTICK ROAD CLOSED DUE TO FLOODING.

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, 3.1 hours before the alert went out and 109 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 2017-06-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 562 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 2017-06-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 10 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
562 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
1442 m above ground
0-6 km bulk shear
6 kt
0-1 km storm-relative helicity
10 m²/s²
0-3 km storm-relative helicity
21 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

487 
WGUS52 KFFC 200305
FFWFFC
GAC133-159-211-217-219-221-265-297-317-200900-
/O.NEW.KFFC.FF.W.0024.170620T0305Z-170620T0900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Peachtree City GA
1105 PM EDT MON JUN 19 2017

The National Weather Service in Peachtree City has issued a

* Flash Flood Warning for...
  Southeastern Oconee County in northeastern Georgia...
  Morgan County in north central Georgia...
  Southeastern Walton County in north central Georgia...
  Northern Greene County in east central Georgia...
  Northwestern Taliaferro County in east central Georgia...
  West central Wilkes County in east central Georgia...
  Oglethorpe County in northeastern Georgia...
  Northern Jasper County in central Georgia...
  Southeastern Newton County in north central Georgia...

* Until 500 AM EDT

* At 1104 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Isolated Flash flooding is 
  expected.

* Rainfall amounts of 2 to 3 inches in the last 90 minutes are 
  common across the warned area, and another 1 to 2 inches are 
  possible. Expect rises on small creeks and streams, and ponding of 
  water on roadways.

* Some locations that will experience flooding include...
  Covington, Washington, Madison, Greensboro, Lexington, Social
  Circle, Oxford, Union Point, Porterdale, Crawford, Rutledge,
  Newborn, Mansfield, Bostwick, Woodville, Maxeys, Rayle, Buckhead,
  Stephens and Wrayswood.


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 3336 8381 3359 8393 3385 8331 3385 8328
      3388 8326 3400 8296 3373 8277

$$
2 follow-up statements
284 
WGUS72 KFFC 200619
FFSFFC

Flash Flood Statement
National Weather Service Peachtree City GA
219 AM EDT TUE JUN 20 2017

GAC133-159-211-217-219-221-265-297-317-200900-
/O.CON.KFFC.FF.W.0024.000000T0000Z-170620T0900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Oconee GA-Morgan GA-Walton GA-Greene GA-Taliaferro GA-Wilkes GA-
Oglethorpe GA-Jasper GA-Newton GA-
219 AM EDT TUE JUN 20 2017

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 500 AM EDT FOR
SOUTHEASTERN OCONEE...MORGAN...SOUTHEASTERN WALTON...NORTHERN
GREENE...NORTHWESTERN TALIAFERRO...WEST CENTRAL WILKES...
OGLETHORPE...NORTHERN JASPER AND SOUTHEASTERN NEWTON COUNTIES...

At 215 AM EDT, Doppler radar showed the heavy rain that fell earlier 
across the warned area has diminished. However, widespread rainfall 
amounts of two to four inches, with localized totals as high as 
seven inches, of rain have fallen across the warned area and flash 
flooding is will continue for the next few hours.

Some locations that will experience flooding include...
Covington, Washington, Madison, Greensboro, Lexington, Social Circle,
Oxford, Union Point, Porterdale, Crawford, Rutledge, Newborn,
Mansfield, Bostwick, Woodville, Maxeys, Rayle, Buckhead, Stephens and
Wrayswood. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, urban areas, highways, streets and underpasses as
well as other drainage areas and low lying spots.

Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, country roads, farmland, and other low lying
spots.

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 3336 8381 3359 8393 3385 8331 3385 8328
      3388 8326 3400 8296 3373 8277

$$
481 
WGUS72 KFFC 200852
FFSFFC

Flash Flood Statement
National Weather Service Peachtree City GA
452 AM EDT TUE JUN 20 2017

GAC133-159-211-217-219-221-265-297-317-200900-
/O.EXP.KFFC.FF.W.0024.000000T0000Z-170620T0900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Oconee GA-Morgan GA-Walton GA-Greene GA-Taliaferro GA-Wilkes GA-
Oglethorpe GA-Jasper GA-Newton GA-
452 AM EDT TUE JUN 20 2017

...THE FLASH FLOOD WARNING FOR SOUTHEASTERN OCONEE...MORGAN...
SOUTHEASTERN WALTON...NORTHERN GREENE...NORTHWESTERN TALIAFERRO...
WEST CENTRAL WILKES...OGLETHORPE...NORTHERN JASPER AND SOUTHEASTERN
NEWTON COUNTIES WILL EXPIRE AT 500 AM EDT...

The heavy rain has ended. Although no new flooding is expected to 
develop, many rivers, creeks and streams will continue to see high 
and swiftly flowing water through the morning and some roads will 
still have water ponding on the roadway. 


LAT...LON 3336 8381 3359 8393 3385 8331 3385 8328
      3388 8326 3400 8296 3373 8277

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 19, 8:55 PM EDTSpecial Weather StatementFFCMarion35 min
Jun 19, 9:25 PM EDTSpecial Weather StatementFFCOconee, Oglethorpe35 min
Jun 19, 10:35 PM EDTSpecial Weather StatementFFCMorgan, Oglethorpe25 min
Jun 20, 12:33 AM EDTFlash Flood WarningFFCButts, Henry, Newton5 hr
Jun 20, 1:51 AM EDTSpecial Weather StatementFFCClayton, Coweta, Fayette, Heard, Henry54 min
Jun 20, 2:35 AM EDTSpecial Weather StatementFFCClayton, Coweta, Fayette, Heard, Henry55 min
Jun 20, 3:19 AM EDTFlash Flood WatchFFCBaldwin, Barrow, Butts, Carroll, Clarke, Clayton and 36 more41 hr
Jun 20, 3:26 AM EDTSpecial Weather StatementFFCCarroll, Clayton, Coweta, Fayette, Heard64 min
Jun 20, 5:03 AM EDTSpecial Weather StatementFFCButts, Clarke, Greene, Henry, Jasper, Morgan and 7 more3 hr
Jun 20, 9:38 AM EDTSpecial Weather StatementFFCGreene, Morgan67 min
Jun 20, 9:40 AM EDTSpecial Weather StatementFFCPike, Spalding65 min
Jun 20, 11:01 AM EDTSpecial Weather StatementFFCFayette, Henry59 min
Jun 20, 11:05 AM EDTSpecial Weather StatementFFCGreene, Morgan55 min
Jun 20, 11:16 AM EDTSpecial Weather StatementFFCClarke, Oconee59 min
Jun 20, 11:35 AM EDTFlash Flood WarningFFCGreene, Morgan, Newton6 hr
Jun 20, 12:26 PM EDTSpecial Weather StatementFFCClayton, Rockdale, Walton64 min
Jun 20, 12:45 PM EDTSpecial Weather StatementFFCFulton45 min
Jun 20, 1:11 PM EDTFlash Flood WarningFFCDeKalb, Fulton, Gwinnett6 hr
Jun 20, 1:27 PM EDTRiver Flood WarningFFCFulton, Gwinnett24 hr
Jun 20, 1:33 PM EDTSpecial Weather StatementFFCCarroll, Douglas, Fulton57 min
Jun 20, 2:10 PM EDTSpecial Weather StatementFFCBarrow, Gwinnett, Jackson50 min
Jun 20, 2:20 PM EDTRiver Flood WarningFFCDeKalb, Fulton12 hr
Jun 20, 2:20 PM EDTRiver Flood WarningFFCDeKalb, Fulton12 hr
Jun 20, 2:31 PM EDTSpecial Weather StatementFFCCarroll, Douglas, Fulton59 min
Jun 20, 3:14 PM EDTSpecial Weather StatementFFCGwinnett46 min
Jun 20, 3:17 PM EDTSpecial Weather StatementFFCDeKalb43 min
Jun 20, 3:31 PM EDTRiver Flood WarningFFCDeKalb, Fulton7 hr
Jun 20, 3:38 PM EDTSpecial Weather StatementFFCCobb, Fulton52 min
Jun 20, 3:44 PM EDTRiver Flood WarningFFCGwinnett9 hr
Jun 20, 3:54 PM EDTFlash Flood WarningFFCDeKalb, Gwinnett6 hr
Jun 20, 6:43 PM EDTSpecial Weather StatementFFCClayton47 min

Nearby

Flash Flood Warnings in Georgia, 2017Every flash flood warning in 2017

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.