Alert archive / Georgia / Flash Flood Warnings in 2015

Flash Flood Warning 18, NWS Atlanta, GA

August 18, 2015Morgan County, Oconee County, Georgia

NWS Atlanta, GA issued this flash flood warning at Aug 18, 2015, 6:15 PM EDT for Morgan County, Oconee County, Georgia. It was in force for 6 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
Aug 18, 2015, 6:15 PM EDT (22:15 UTC)
Expired
Aug 19, 2015, 12:15 AM EDT
In force
6 hr
Issued by
NWS Atlanta, GA
Area
Storm-based polygon
Flood severity
None

Counties Morgan County, GA, Oconee County, GA

The radar

The Atlanta radar (KFFC), 122 km from the middle of the area, began a volume at 22:16 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
Aug 18, 8:00 PM EDTFLASH FLOOD1 N Salem, GAGREENBRIAR CREEK IS OVERFLOWING ITS BANKS NEAR THE GEORGIA NATURE CENTER.
Aug 18, 9:30 PM EDTFLASH FLOOD1 N Salem, GAJT ELDER ROAD WAS CLOSED DUE TO HIGH WATER AT GREENBRIER 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 12:00Z, 10.3 hours before the alert went out and 116 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 2015-08-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 38 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 2015-08-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 62 square meters per square second.1939Sfc1 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
38 J/kg
Mixed-layer CIN
-127 J/kg
Mixed-layer LCL
740 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
62 m²/s²
0-3 km storm-relative helicity
72 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.

725 
WGUS52 KFFC 182215
FFWFFC
GAC211-219-190415-
/O.NEW.KFFC.FF.W.0018.150818T2215Z-150819T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
615 PM EDT TUE AUG 18 2015

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTH CENTRAL MORGAN COUNTY IN NORTH CENTRAL GEORGIA...
  SOUTHEASTERN OCONEE COUNTY IN NORTHEASTERN GEORGIA...

* UNTIL 1215 AM EDT WEDNESDAY
    
* AT 613 PM EDT...DOPPLER RADAR INDICATED A THUNDERSTORM PRODUCING 
  HEAVY RAIN ACROSS THE WARNED AREA. TWO TO FOUR INCHES OF RAIN HAVE 
  FALLEN. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  BOSTWICK...BISHOP...BARNETT SHOALS AND FARMINGTON. 

ADDITIONAL RAINFALL AMOUNTS OF OVER AN INCH ARE POSSIBLE IN THE 
WARNED AREA.

THIS INCLUDES THE FOLLOWING STREAMS AND DRAINAGES...LITTLE CREEK...
OCONEE RIVER...ROCKY BRANCH...FREEMAN CREEK...BEAVERDAM CREEK...SHOAL
CREEK...WOLF CREEK...LITTLE SANDY CREEK...JACKS CREEK...APALACHEE
RIVER...LITTLE GREENBRIER CREEK...BIG SANDY CREEK...ROSE CREEK...
WHITLOW CREEK...GREENBRIER CREEK...FALLING CREEK...BIG CREEK...SLAB
CAMP CREEK...PORTERS CREEK...ELLISON CREEK...ROBINSON CREEK AND
LITTLE ROSE CREEK.

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 3381 8330 3381 8329 3380 8329 3379 8328
      3376 8328 3375 8329 3373 8330 3366 8355
      3375 8356 3379 8353 3385 8328 3384 8328

$$
3 follow-up statements
332 
WGUS72 KFFC 190016
FFSFFC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
816 PM EDT TUE AUG 18 2015

GAC211-219-190415-
/O.CON.KFFC.FF.W.0018.000000T0000Z-150819T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MORGAN GA-OCONEE GA-
816 PM EDT TUE AUG 18 2015

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1215 AM EDT
WEDNESDAY FOR NORTH CENTRAL MORGAN AND SOUTHEASTERN OCONEE
COUNTIES...

AT 812 PM EDT...DOPPLER RADAR INDICATED 3 TO 5 INCHES OF RAIN FELL 
IN THE WARNED AREA. ALTHOUGH THE HEAVY RAIN HAS MOVED OUT OF THE 
AREA...CREEKS AND STREAMS IN THE WARNED AREA ARE LIKELY AT OR OVER 
BANKFULL. ADDITIONAL LIGHT TO MODERATE RAINFALL IS POSSIBLE IN THE 
WARNED AREA BUT ANY ADDITIONAL AMOUNTS SHOULD BE LESS THAN AN INCH.

THIS INCLUDES THE FOLLOWING STREAMS AND DRAINAGES...GREENBRIER 
CREEK...ROSE CREEK...LITTLE ROSE CREEK...ROCKY BRANCH...WOLF 
CREEK...JACKS CREEK AND THE APALACHEE RIVER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.

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 3381 8330 3381 8329 3380 8329 3379 8328
      3376 8328 3375 8329 3373 8330 3366 8355
      3375 8356 3379 8353 3385 8328 3384 8328

$$
468 
WGUS72 KFFC 190022 CCA
FFSFFC

FLASH FLOOD STATEMENT...CORRECTED
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
822 PM EDT TUE AUG 18 2015

GAC211-219-190415-
/O.COR.KFFC.FF.W.0018.000000T0000Z-150819T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MORGAN GA-OCONEE GA-
822 PM EDT TUE AUG 18 2015

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1215 AM EDT FOR
NORTH CENTRAL MORGAN AND SOUTHEASTERN OCONEE COUNTIES...

AT 819 PM EDT...DOPPLER RADAR INDICATED 3 TO 5 INCHES OF RAIN FELL 
IN THE WARNED AREA. ALTHOUGH THE HEAVY RAIN HAS MOVED OUT OF THE 
AREA...CREEKS AND STREAMS IN THE WARNED AREA ARE LIKELY AT OR OVER 
BANKFULL. ADDITIONAL LIGHT TO MODERATE RAINFALL IS POSSIBLE IN THE 
WARNED AREA BUT ANY ADDITIONAL AMOUNTS SHOULD BE LESS THAN AN INCH.

GREENBRIER CREEK HAS BEEN REPORTED TO BE OUT OF ITS BANKS AROUND THE 
GEORGIA NATURE CENTER. 

THIS INCLUDES THE FOLLOWING STREAMS AND DRAINAGES...GREENBRIER 
CREEK...ROSE CREEK...LITTLE ROSE CREEK...ROCKY BRANCH...WOLF 
CREEK...JACKS CREEK AND THE APALACHEE RIVER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.

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 3381 8330 3381 8329 3380 8329 3379 8328
      3376 8328 3375 8329 3373 8330 3366 8355
      3375 8356 3379 8353 3385 8328 3384 8328

$$
205 
WGUS72 KFFC 190411
FFSFFC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1211 AM EDT WED AUG 19 2015

GAC211-219-190417-
/O.EXP.KFFC.FF.W.0018.000000T0000Z-150819T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MORGAN GA-OCONEE GA-
1211 AM EDT WED AUG 19 2015

...THE FLASH FLOOD WARNING FOR NORTH CENTRAL MORGAN AND SOUTHEASTERN
OCONEE COUNTIES WILL EXPIRE AT 1215 AM EDT...

FLOOD WATERS ON SMALL CREEKS AND STREAMS HAVE CRESTED OR RECEDED 
...AND NO LONGER EXPECTED TO POSE AN IMMEDIATE THREAT TO LIFE OR 
PROPERTY. HOWEVER...A FLOOD WARNING REMAINS IN EFFECT FOR THE AREA 
DUE TO CONTINUED INUNDATION OF FLOODED AREAS...INCLUDING THE 
GREENBRIER CREEK. PLEASE CONTINUE TO HEED ANY ROAD CLOSURES AND BE 
ON THE LOOKOUT FOR OTHER CREEKS AND STREAMS NEARING BANKFULL.

LAT...LON 3381 8330 3381 8329 3380 8329 3379 8328
      3376 8328 3375 8329 3373 8330 3366 8355
      3375 8356 3379 8353 3385 8328 3384 8328

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 17, 8:01 PM EDTSpecial Weather StatementFFCClarke, Oconee44 min
Aug 17, 8:15 PM EDTSevere Thunderstorm WarningFFCBanks, Barrow, Jackson, Madison45 min
Aug 17, 8:25 PM EDTSpecial Weather StatementFFCForsyth, Hall50 min
Aug 17, 8:44 PM EDTSpecial Weather StatementFFCClarke, Madison, Oconee46 min
Aug 17, 9:31 PM EDTSpecial Weather StatementFFCClarke, Madison, Oconee, Oglethorpe59 min
Aug 17, 10:45 PM EDTSpecial Weather StatementFFCGreene, Morgan60 min
Aug 18, 1:43 PM EDTSpecial Weather StatementFFCGwinnett32 min
Aug 18, 2:10 PM EDTSpecial Weather StatementFFCHall35 min
Aug 18, 2:53 PM EDTSpecial Weather StatementFFCJackson37 min
Aug 18, 3:20 PM EDTSpecial Weather StatementFFCDooly, Macon, Schley25 min
Aug 18, 3:52 PM EDTSpecial Weather StatementFFCPike23 min
Aug 18, 3:56 PM EDTSpecial Weather StatementFFCTalbot34 min
Aug 18, 4:11 PM EDTSpecial Weather StatementFFCPickens34 min
Aug 18, 4:16 PM EDTSpecial Weather StatementFFCLamar29 min
Aug 18, 4:18 PM EDTSpecial Weather StatementFFCForsyth27 min
Aug 18, 4:28 PM EDTSpecial Weather StatementFFCCrawford32 min
Aug 18, 4:36 PM EDTSpecial Weather StatementFFCPickens24 min
Aug 18, 4:53 PM EDTSpecial Weather StatementFFCForsyth37 min
Aug 18, 4:57 PM EDTSpecial Weather StatementFFCBibb, Crawford33 min
Aug 18, 4:59 PM EDTSpecial Weather StatementFFCDodge31 min
Aug 18, 5:04 PM EDTSpecial Weather StatementFFCCherokee, Dawson26 min
Aug 18, 5:18 PM EDTSevere Thunderstorm WarningFFCForsyth, Fulton, Gwinnett27 min
Aug 18, 5:23 PM EDTSpecial Weather StatementFFCMeriwether37 min
Aug 18, 5:28 PM EDTSpecial Weather StatementFFCOconee32 min
Aug 18, 5:43 PM EDTSpecial Weather StatementFFCJones, Putnam47 min
Aug 18, 5:45 PM EDTSevere Thunderstorm WarningFFCBarrow, Gwinnett30 min
Aug 18, 6:03 PM EDTSpecial Weather StatementFFCOconee27 min
Aug 18, 6:18 PM EDTSpecial Weather StatementFFCBarrow, DeKalb, Jackson27 min
Aug 18, 6:26 PM EDTSpecial Weather StatementFFCTaliaferro49 min
Aug 18, 6:33 PM EDTSpecial Weather StatementFFCOglethorpe42 min
Aug 18, 6:44 PM EDTSpecial Weather StatementFFCMontgomery, Treutlen46 min
Aug 18, 6:45 PM EDTSpecial Weather StatementFFCBarrow, DeKalb30 min
Aug 18, 7:13 PM EDTSpecial Weather StatementFFCOglethorpe, Wilkes62 min
Aug 18, 7:15 PM EDTSpecial Weather StatementFFCBarrow30 min
Aug 18, 7:38 PM EDTSpecial Weather StatementFFCToombs37 min

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.