Alert archive / Georgia / River Flood Warnings in 2021

River Flood Warning 83, NWS Atlanta, GA

March 31, 2021Forsyth County, Fulton County, Georgia

NWS Atlanta, GA issued this river flood warning at Mar 31, 2021, 2:21 PM EDT for Forsyth County, Fulton County, Georgia. It took effect at Mar 31, 2021, 6:14 PM EDT. It was in force for 17 hr.

The area

The outline as issued.

The facts

Issued
Mar 31, 2021, 2:21 PM EDT (18:21 UTC)
In effect from
Mar 31, 2021, 6:14 PM EDT
Expired
Apr 1, 2021, 10:51 AM EDT
In force
17 hr
Issued by
NWS Atlanta, GA
Area
Storm-based polygon
Flood severity
Minor

Counties Forsyth County, GA, Fulton County, GA

The radar

The Atlanta radar (KFFC), 83 km from the middle of the area, began a volume at 18:21 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 river

Written for the forecast point Big Creek near Alpharetta (APHG1). The gauge peaked at 6.99 ft at Apr 1, 2021, 2:00 AM EDT.

actionminormoderate51003/3104/0104/02
Action stage
6 ft
Minor stage
7 ft
Moderate stage
11 ft
Major stage
13 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 02335700, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

The text

As transmitted.

254 
WGUS42 KFFC 311821
FLWFFC

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Peachtree City GA
221 PM EDT Wed Mar 31 2021

...The National Weather Service in Peachtree City GA has issued a 
Flood Warning for the following rivers in Georgia...

  Big Creek near Alpharetta affecting Fulton and Forsyth Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

&&

Additional information is available at weather.gov/atlanta.


GAC117-121-010630-
/O.NEW.KFFC.FL.W.0083.210331T2214Z-210401T1800Z/
/APHG1.1.ER.210331T2214Z.210401T0600Z.210401T1200Z.NO/
221 PM EDT Wed Mar 31 2021

The National Weather Service in Peachtree City has issued a

* Flood Warning for
  the Big Creek near Alpharetta.
* From this evening to Thursday afternoon.
* At 2:00 PM EDT Wednesday the stage was 6.0 feet and rising.
* Flood stage is 7 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage this 
  evening to a crest of 7.7 feet just after midnight tonight. It 
  will then fall below flood stage Thursday morning.
* Impact...At 8 feet, Minor flooding continues to expand further 
  into the woodlands and fields along the creek from near Cumming in 
  south Forsyth County to Alpharetta and Roswell in north Fulton 
  County. Additional portions of The Big Creek Greenway have minor 
  flooding with 1 to 2 feet of water. Most of the walking and biking 
  paths will be closed...especially upstream and downstream from the 
  gage on Kimball Bridge Road and near Rock Mill Park. Portions of 
  the YMCA Campground off Preston Ridge Road will flood.


&&

LAT...LON 3410 8425 3410 8420 3404 8425 3402 8430
      3404 8433 3407 8427

$$
3 follow-up statements
568 
WGUS82 KFFC 010036
FLSFFC

Flood Statement
National Weather Service Peachtree City GA
836 PM EDT Wed Mar 31 2021

...The Flood Warning continues for the following rivers in Georgia...

  Big Creek near Alpharetta affecting Fulton and Forsyth Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flood Warning means that flooding is imminent or occurring. All 
interested parties should take necessary precautions immediately.

&&

Additional information is available at weather.gov/atlanta.


GAC117-121-011245-
/O.CON.KFFC.FL.W.0083.000000T0000Z-210401T1800Z/
/APHG1.1.ER.210401T0315Z.210402T0000Z.210402T1048Z.NO/
836 PM EDT Wed Mar 31 2021

...The Flood Warning remains in effect...

The Flood Warning continues for
  the Big Creek near Alpharetta.
* Until Thursday afternoon.
* At 8:30 PM EDT Wednesday the stage was 6.9 feet and rising.
* Flood stage is 7.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage late 
  this evening to a crest of 7.5 feet Thursday evening. It will then 
  fall below flood stage Friday morning.
* Impact...At 7.0 feet, Flood Stage is reached.  Minor flooding of 
  woodlands and fields begin along the creek between Cumming in 
  Forsyth County...to Alpharetta and Roswell in North Fulton 
  County.  Flooding starts to effect portions of The Big Creek 
  Greenway near Alpharetta and some portions may become closed with 
  around one foot of water...especially upstream and downstream from 
  the gage on Kimball Bridge Road and near Rock Mill Park. Portions 
  of the YMCA Campground off Preston Ridge Road will begin to flood.


&&

LAT...LON 3410 8425 3410 8420 3404 8425 3402 8430
      3404 8433 3407 8427

$$
782 
WGUS82 KFFC 011019
FLSFFC

Flood Statement
National Weather Service Peachtree City GA
619 AM EDT Thu Apr 1 2021

...The Flood Warning is extended for the following rivers in 
Georgia...

  Big Creek near Alpharetta affecting Fulton and Forsyth Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flood Warning means that flooding is imminent or occurring. All 
interested parties should take necessary precautions immediately.

&&

Additional information is available at weather.gov/atlanta.


GAC117-121-012230-
/O.EXT.KFFC.FL.W.0083.000000T0000Z-210402T0000Z/
/APHG1.1.ER.210401T1200Z.210401T1200Z.210401T1800Z.NO/
619 AM EDT Thu Apr 1 2021

...The Flood Warning is now in effect until this evening...

The Flood Warning continues for
  the Big Creek near Alpharetta.
* Until this evening.
* At 6:00 AM EDT Thursday the stage was 7.0 feet.
* Flood stage is 7.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage this 
  morning to a crest of 7.0 feet this morning. It will then fall 
  below flood stage this afternoon.
* Impact...At 7.0 feet, Flood Stage is reached.  Minor flooding of 
  woodlands and fields begin along the creek between Cumming in 
  Forsyth County...to Alpharetta and Roswell in North Fulton 
  County.  Flooding starts to effect portions of The Big Creek 
  Greenway near Alpharetta and some portions may become closed with 
  around one foot of water...especially upstream and downstream from 
  the gage on Kimball Bridge Road and near Rock Mill Park. Portions 
  of the YMCA Campground off Preston Ridge Road will begin to flood.


&&

LAT...LON 3410 8425 3410 8420 3404 8425 3402 8430
      3404 8433 3407 8427

$$
415 
WGUS82 KFFC 011451
FLSFFC

Flood Statement
National Weather Service Peachtree City GA
1051 AM EDT Thu Apr 1 2021

...The Flood Warning is cancelled for the following rivers in 
Georgia...

  Big Creek near Alpharetta affecting Fulton and Forsyth Counties.

GAC117-121-011600-
/O.CAN.KFFC.FL.W.0083.000000T0000Z-210401T1451Z/
/APHG1.1.ER.210401T1200Z.210401T1200Z.210401T1800Z.NO/
1051 AM EDT Thu Apr 1 2021

...The Flood Warning for the Big Creek near Alpharetta has been 
cancelled...

The Flood Warning is cancelled for
  the Big Creek near Alpharetta.
* At 10:45 AM EDT Thursday the stage was 6.9 feet.
* Flood stage is 7.0 feet.
* Forecast...The river is expected to continue to fall today.


&&

LAT...LON 3410 8425 3410 8420 3404 8425 3402 8430
      3404 8433 3407 8427

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 31, 7:04 AM EDTSpecial Weather StatementFFCCatoosa, Chattooga, Dade, Walker41 min
Mar 31, 7:46 AM EDTFlash Flood WarningFFCCatoosa, Dade, Walker5 hr
Mar 31, 8:16 AM EDTFlash Flood WarningFFCBartow, Chattooga, Fannin, Floyd, Gilmer, Gordon and 7 more6 hr
Mar 31, 8:19 AM EDTSpecial Weather StatementFFCPaulding26 min
Mar 31, 9:07 AM EDTRiver Flood WarningFFCDade29 hr
Mar 31, 9:08 AM EDTRiver Flood WarningFFCWhitfield5 hr
Mar 31, 9:09 AM EDTSpecial Weather StatementFFCCobb, Douglas, Fulton36 min
Mar 31, 9:15 AM EDTRiver Flood WarningFFCChattooga27 hr
Mar 31, 9:15 AM EDTRiver Flood WarningFFCFloyd45 hr
Mar 31, 9:15 AM EDTRiver Flood WarningFFCGordon, Murray, Whitfield4 days
Mar 31, 9:15 AM EDTRiver Flood WarningFFCFloyd, Gordon4 days
Mar 31, 9:23 AM EDTRiver Flood WarningFFCCatoosa49 hr
Mar 31, 9:38 AM EDTSpecial Weather StatementFFCGwinnett37 min
Mar 31, 9:44 AM EDTRiver Flood WarningFFCWhitfield71 hr
Mar 31, 9:53 AM EDTSpecial Weather StatementFFCDouglas, Fulton22 min
Mar 31, 9:54 AM EDTRiver Flood WarningFFCMurray, Whitfield44 hr
Mar 31, 11:26 AM EDTSpecial Weather StatementFFCHaralson, Paulding34 min
Mar 31, 11:58 AM EDTSpecial Weather StatementFFCCarroll, Cobb, Douglas32 min
Mar 31, 1:12 PM EDTSpecial Weather StatementFFCFayette33 min
Mar 31, 1:31 PM EDTRiver Flood WarningFFCCobb21 days
Mar 31, 2:00 PM EDTRiver Flood WarningFFCCatoosa19 hr
Mar 31, 3:00 PM EDTSpecial Weather StatementFFCOglethorpe30 min
Mar 31, 3:03 PM EDTSpecial Weather StatementFFCGreene27 min
Mar 31, 3:44 PM EDTSpecial Weather StatementFFCChattahoochee, Marion, Stewart31 min
Mar 31, 3:59 PM EDTSpecial Weather StatementFFCWilkes31 min
Mar 31, 4:22 PM EDTFreeze WatchFFCBanks, Barrow, Bartow, Butts, Carroll, Catoosa and 44 more11 hr
Mar 31, 4:22 PM EDTWind AdvisoryFFCBanks, Barrow, Bartow, Bibb, Butts, Carroll and 64 more27 hr
Mar 31, 5:08 PM EDTSpecial Weather StatementFFCBleckley, Dooly, Houston, Pulaski, Twiggs, Wilkinson37 min
Mar 31, 5:23 PM EDTSpecial Weather StatementFFCGlascock, Washington37 min
Mar 31, 5:35 PM EDTSpecial Weather StatementFFCBleckley, Dodge, Pulaski, Wilcox25 min
Mar 31, 5:44 PM EDTSevere Thunderstorm WarningFFCLaurens31 min
Mar 31, 6:05 PM EDTSpecial Weather StatementFFCEmanuel, Treutlen, Wheeler25 min
Mar 31, 6:22 PM EDTRiver Flood WarningFFCMurray7 hr
Mar 31, 6:30 PM EDTSpecial Weather StatementFFCEmanuel, Montgomery, Telfair, Treutlen, Wheeler30 min
Mar 31, 7:00 PM EDTSpecial Weather StatementFFCEmanuel, Montgomery, Telfair, Toombs30 min

Nearby

River Flood Warnings in Georgia, 2021Every river flood warning in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive; the gauge from the NWS water service and the USGS.