Alert archive / Georgia / River Flood Warnings in 2026

River Flood Warning 21, NWS Atlanta, GA

May 25, 2026Forsyth County, Georgia

NWS Atlanta, GA issued this river flood warning at May 25, 2026, 12:09 AM EDT for Forsyth County, Georgia. It took effect at May 25, 2026, 12:32 AM EDT. It was in force for 20 hr.

The area

The outline as issued.

The facts

Issued: May 25, 2026, 12:09 AM EDT (04:09 UTC)
In effect from: May 25, 2026, 12:32 AM EDT
Expired: May 25, 2026, 8:16 PM EDT
In force: 20 hr
Issued by: NWS Atlanta, GA
Area: Storm-based polygon
Flood severity: Minor

County Forsyth County, GA

The radar

The Atlanta radar (KFFC), 92 km from the middle of the area, began a volume at 04:12 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 at GA 9 near Cumming (CMGG1). The gauge peaked at 7.68 ft at May 25, 2026, 8:00 AM EDT.

Action stage: 4 ft
Minor stage: 6 ft
Moderate stage: 12 ft
Major stage: 15 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 02335580, 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.

533 
WGUS42 KFFC 250409
FLWFFC

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Peachtree City GA
1209 AM EDT Mon May 25 2026

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

  Big Creek at GA 9 near Cumming affecting Forsyth County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Additional information is available at weather.gov/atlanta.

&&

GAC117-251615-
/O.NEW.KFFC.FL.W.0021.260525T0432Z-260525T2100Z/
/CMGG1.1.ER.260525T0432Z.260525T1000Z.260525T1445Z.UU/
1209 AM EDT Mon May 25 2026

...FLOOD WARNING IN EFFECT UNTIL THIS AFTERNOON...

* WHAT...Minor flooding is forecast.

* WHERE...Big Creek at GA 9 near Cumming.

* WHEN...Until this afternoon.

* IMPACTS...At 6 feet, Flood stage is reached. Minor flooding will
  expand into the natural flood plain of the creek upstream and
  downstream from the gage at Atlanta Highway or Georgia Highway 9.
  Large portions of the sidewalk and boardwalk of the Big Creek
  Greenway will begin to flood. The areas under the Georgia 400
  Highway and McFarland Road will be covered with around one foot of
  water. A portion of the sidewalk under Majors Road will be covered
  with around two feet of water.

* ADDITIONAL DETAILS...
  - At 11:45 PM EDT Sunday the stage was 5.7 feet and rising.
  - Forecast...The river is expected to rise above flood stage early
    this morning to a crest of 6.8 feet this morning. It will then
    fall below flood stage by midday.
  - Flood stage is 6 feet.
  - http://www.weather.gov/safety/flood

&&

LAT...LON 3418 8424 3417 8420 3411 8419 3410 8420
      3410 8425 3411 8424


$$

3 follow-up statements

356 
WGUS82 KFFC 250918
FLSFFC

Flood Statement
National Weather Service Peachtree City GA
518 AM EDT Mon May 25 2026

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

  Big Creek at GA 9 near Cumming affecting Forsyth County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Caution is urged when walking near riverbanks.

Additional information is available at weather.gov/atlanta.

&&

GAC117-252130-
/O.EXT.KFFC.FL.W.0021.000000T0000Z-260526T0100Z/
/CMGG1.1.ER.260525T0425Z.260525T1100Z.260525T1900Z.UU/
518 AM EDT Mon May 25 2026

...FLOOD WARNING NOW IN EFFECT UNTIL THIS EVENING...

* WHAT...Minor flooding is occurring and minor flooding is forecast.

* WHERE...Big Creek at GA 9 near Cumming.

* WHEN...Until this evening.

* IMPACTS...At 8 feet, Minor flooding will expand into the natural
  flood plain of the creek upstream and downstream from the gage at
  Atlanta Highway or Georgia Highway 9. Most of the sidewalk and
  boardwalk of the Big Creek Greenway will be under a foot or two of
  water. The areas under the Georgia 400 Highway and McFarland Road
  will be covered with around three feet of water. A portion of the
  sidewalk under Majors Road will be covered with around four feet of
  water.

* ADDITIONAL DETAILS...
  - At 4:45 AM EDT Monday the stage was 7.1 feet and rising.
  - Forecast...The creek is expected to rise to a crest of 7.5 feet
    this morning. It will then fall below flood stage late this
    afternoon.
  - Flood stage is 6 feet.
  - http://www.weather.gov/safety/flood

&&

LAT...LON 3418 8424 3417 8420 3411 8419 3410 8420
      3410 8425 3411 8424


$$

712 
WGUS82 KFFC 251456
FLSFFC

Flood Statement
National Weather Service Peachtree City GA
1056 AM EDT Mon May 25 2026

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

  Big Creek at GA 9 near Cumming affecting Forsyth County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Caution is urged when walking near riverbanks.

Additional information is available at weather.gov/atlanta.

&&

GAC117-260100-
/O.CON.KFFC.FL.W.0021.000000T0000Z-260526T0100Z/
/CMGG1.1.ER.260525T0425Z.260525T1145Z.260525T1900Z.UU/
1056 AM EDT Mon May 25 2026

...FLOOD WARNING REMAINS IN EFFECT UNTIL THIS EVENING...

* WHAT...Minor flooding is occurring and minor flooding is forecast
  to continue.

* WHERE...Big Creek at GA 9 near Cumming.

* WHEN...Until this evening.

* IMPACTS...Between 7 and 8 feet feet, Minor flooding continues to
  expand into the natural flood plain of the creek upstream and
  downstream from the gage at Atlanta Highway or Georgia Highway 9.
  Large portions of the sidewalk and boardwalk of the Big Creek
  Greenway will be flooded. The areas under the Georgia 400 Highway
  and McFarland Road will be covered with around two feet of water. A
  portion of the sidewalk under Majors Road will be covered with
  around 3 feet of water.

* ADDITIONAL DETAILS...
  - At 9:45 AM EDT Monday the stage was 7.4 feet and falling.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 9:45 AM EDT Monday was 7.7 feet.
  - Forecast...The river is expected to fall below flood stage late
    this afternoon and continue falling to 3.7 feet just after
    midnight tonight.
  - Flood stage is 6 feet.
  - http://www.weather.gov/safety/flood

&&

LAT...LON 3418 8424 3417 8420 3411 8419 3410 8420
      3410 8425 3411 8424


$$

086 
WGUS82 KFFC 260016
FLSFFC

Flood Statement
National Weather Service Peachtree City GA
816 PM EDT Mon May 25 2026

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

  Big Creek at GA 9 near Cumming affecting Forsyth County.

GAC117-260130-
/O.CAN.KFFC.FL.W.0021.000000T0000Z-260526T0016Z/
/CMGG1.1.ER.260525T0425Z.260525T1145Z.260525T1630Z.UU/
816 PM EDT Mon May 25 2026

...FLOOD WARNING IS CANCELLED...

The Flood Warning is cancelled for
  the Big Creek at GA 9 near Cumming.

* ADDITIONAL DETAILS...
  - At 7:45 PM EDT Monday the stage was 2.5 feet.
  - Forecast...The river is expected to rise to 4.3 feet late this
    evening. Additional rises are possible thereafter.
  - http://www.weather.gov/safety/flood

&&

LAT...LON 3418 8424 3417 8420 3411 8419 3410 8420
      3410 8425 3411 8424


$$

The office that day

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

Issued	Product	Office	Counties	Lasted
May 24, 8:02 PM EDT	Special Weather Statement	FFC	Wilkinson	28 min
May 24, 8:25 PM EDT	Special Weather Statement	FFC	Baldwin, Hancock, Washington	35 min
May 24, 9:20 PM EDT	Flash Flood Warning	FFC	Cherokee, Cobb	4 hr
May 24, 10:08 PM EDT	River Flood Warning	FFC	Forsyth, Fulton	42 hr
May 24, 10:30 PM EDT	River Flood Warning	FFC	Cobb	3 hr
May 25, 2:26 AM EDT	River Flood Warning	FFC	Cherokee	4 hr
May 25, 2:03 PM EDT	Special Weather Statement	FFC	Laurens	27 min
May 25, 2:22 PM EDT	Special Weather Statement	FFC	Stewart, Sumter, Webster	23 min
May 25, 2:45 PM EDT	Special Weather Statement	FFC	Crisp, Stewart, Sumter, Webster	30 min
May 25, 3:12 PM EDT	Special Weather Statement	FFC	Schley	33 min
May 25, 3:13 PM EDT	Special Weather Statement	FFC	Crisp, Wilcox	32 min
May 25, 3:37 PM EDT	Special Weather Statement	FFC	Johnson	23 min
May 25, 3:40 PM EDT	Special Weather Statement	FFC	Dooly, Wilcox	35 min
May 25, 3:45 PM EDT	Severe Thunderstorm Warning	FFC	Crisp, Dooly, Pulaski, Wilcox	15 min
May 25, 4:10 PM EDT	Special Weather Statement	FFC	Upson	35 min
May 25, 4:13 PM EDT	Special Weather Statement	FFC	Bleckley, Houston, Pulaski	32 min
May 25, 4:24 PM EDT	Severe Thunderstorm Warning	FFC	Bleckley, Houston, Pulaski, Twiggs	36 min
May 25, 4:37 PM EDT	Special Weather Statement	FFC	Wilkinson	38 min
May 25, 4:39 PM EDT	Special Weather Statement	FFC	Crawford	36 min
May 25, 4:47 PM EDT	Severe Thunderstorm Warning	FFC	Bleckley, Twiggs	13 min
May 25, 4:57 PM EDT	Special Weather Statement	FFC	Bleckley	18 min
May 25, 5:00 PM EDT	Severe Thunderstorm Warning	FFC	Twiggs, Wilkinson	30 min
May 25, 5:04 PM EDT	Special Weather Statement	FFC	Fayette, Spalding	26 min
May 25, 5:29 PM EDT	Special Weather Statement	FFC	Baldwin, Wilkinson	31 min
May 25, 5:32 PM EDT	Special Weather Statement	FFC	Clayton, Fayette, Henry, Rockdale	28 min
May 25, 5:53 PM EDT	Special Weather Statement	FFC	Wilkes	37 min
May 25, 6:15 PM EDT	Special Weather Statement	FFC	Bartow	30 min
May 25, 6:19 PM EDT	Special Weather Statement	FFC	Morgan, Oconee	26 min
May 25, 6:27 PM EDT	Special Weather Statement	FFC	Wheeler	33 min
May 25, 7:02 PM EDT	Flash Flood Warning	FFC	Madison, Oglethorpe	2 hr
May 25, 7:05 PM EDT	Special Weather Statement	FFC	Wheeler	25 min
May 25, 7:21 PM EDT	Special Weather Statement	FFC	Polk	24 min
May 25, 7:26 PM EDT	Special Weather Statement	FFC	Polk	34 min
May 25, 7:36 PM EDT	Flash Flood Warning	FFC	Telfair, Wheeler	84 min

Nearby

River Flood Warnings in Georgia, 2026 Every river flood warning in 2026

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.