Alert archive / Georgia / River Flood Warnings in 2021
River Flood Warning 173, NWS Atlanta, GA
NWS Atlanta, GA issued this river flood warning at Sep 20, 2021, 8:36 PM EDT for Forsyth County, Fulton County, Georgia. It took effect at Sep 20, 2021, 9:12 PM EDT. It was in force for 39 hr.
The area
The outline as issued.
The facts
- Issued
- Sep 20, 2021, 8:36 PM EDT (00:36 UTC)
- In effect from
- Sep 20, 2021, 9:12 PM EDT
- Expired
- Sep 22, 2021, 12:40 PM EDT
- In force
- 39 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 00:36 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 9.05 ft at Sep 21, 2021, 8:00 PM EDT.
- 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.
924
WGUS42 KFFC 210036
FLWFFC
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Peachtree City GA
836 PM EDT Mon Sep 20 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.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
Additional information is available at weather.gov/atlanta.
&&
GAC117-121-211245-
/O.NEW.KFFC.FL.W.0173.210921T0112Z-210922T0300Z/
/APHG1.1.ER.210921T0112Z.210921T0600Z.210921T2100Z.NO/
836 PM EDT Mon Sep 20 2021
The National Weather Service in Peachtree City has issued a
* Flood Warning for
the Big Creek near Alpharetta.
* Until late tomorrow evening.
* At 8:15 PM EDT Monday the stage was 6.9 feet.
* Flood stage is 7 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage late
this evening to a crest of 7.3 feet just after midnight tonight.
It will then fall below flood stage Tuesday afternoon.
* Impact...At 7 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
$$7 follow-up statements
158
WGUS82 KFFC 210234
FLSFFC
Flood Statement
National Weather Service Peachtree City GA
1034 PM EDT Mon Sep 20 2021
...The Flood Warning continues for the following rivers in Georgia...
Big Creek near Alpharetta affecting Fulton and Forsyth Counties.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
Additional information is available at weather.gov/atlanta.
&&
GAC117-121-211445-
/O.CON.KFFC.FL.W.0173.000000T0000Z-210922T0300Z/
/APHG1.1.ER.210921T0056Z.210921T0600Z.210921T2100Z.NO/
1034 PM EDT Mon Sep 20 2021
...The Flood Warning remains in effect...
The Flood Warning continues for
the Big Creek near Alpharetta.
* Until late tomorrow evening.
* At 10:30 PM EDT Monday the stage was 7.1 feet.
* Flood stage is 7 feet.
* Minor flooding is occurring and minor flooding is forecast to
continue.
* Forecast...The river is expected to rise to a crest of 7.3 feet
just after midnight tonight. It will then fall below flood stage
Tuesday afternoon.
* Impact...At 7 feet, Flood Stage is reached. Minor flooding of
woodlands and fields begin along the creek between Cumming in
Forsyth County...to Alpharetta and Roswell in North Fulton
County. Flooding starts to effect portions of The Big Creek
Greenway near Alpharetta and some portions may become closed with
around one foot of water...especially upstream and downstream from
the gage on Kimball Bridge Road and near Rock Mill Park. Portions
of the YMCA Campground off Preston Ridge Road will begin to flood.
&&
LAT...LON 3410 8425 3410 8420 3404 8425 3402 8430
3404 8433 3407 8427
$$221
WGUS82 KFFC 211037
FLSFFC
Flood Statement
National Weather Service Peachtree City GA
637 AM EDT Tue Sep 21 2021
...The Flood Warning is extended 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.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
Additional information is available at weather.gov/atlanta.
&&
GAC117-121-212245-
/O.EXT.KFFC.FL.W.0173.000000T0000Z-210922T1707Z/
/APHG1.1.ER.210921T0056Z.210921T1800Z.210922T1700Z.NO/
637 AM EDT Tue Sep 21 2021
...The Flood Warning is now in effect until early tomorrow
afternoon...
The Flood Warning continues for
the Big Creek near Alpharetta.
* Until early tomorrow afternoon.
* At 6:15 AM EDT Tuesday the stage was 7.9 feet and rising.
* Flood stage is 7 feet.
* Minor flooding is occurring and minor flooding is forecast.
* Forecast...The river is expected to rise to a crest of 8.6 feet
this afternoon. It will then fall below flood stage early tomorrow
afternoon.
* Impact...At 9 feet, minor flooding expands along the creek from
near Cumming to Alpharetta and Roswell. Backyards of homes off
Seale Drive and Gunter Court and portions of the Golf of Georgia
begin to flood. The Big Creek Greenway experiences significant
flooding up to 3 feet deep...which results in closure of most of
the paths. This especially occurs upstream and downstream from the
gage on Kimball Bridge Road and Rock Mill Park. A large portion of
the YMCA Campground off Preston Ridge Road will be under a foot of
water.
&&
LAT...LON 3410 8425 3410 8420 3404 8425 3402 8430
3404 8433 3407 8427
$$148
WGUS82 KFFC 211433
FLSFFC
Flood Statement
National Weather Service Peachtree City GA
1033 AM EDT Tue Sep 21 2021
...The Flood Warning continues for the following rivers in Georgia...
Big Creek near Alpharetta affecting Fulton and Forsyth Counties.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
Additional information is available at weather.gov/atlanta.
&&
GAC117-121-220300-
/O.CON.KFFC.FL.W.0173.000000T0000Z-210922T1707Z/
/APHG1.1.ER.210921T0056Z.210921T1800Z.210922T2217Z.NO/
1033 AM EDT Tue Sep 21 2021
...The Flood Warning remains in effect...
The Flood Warning continues for
the Big Creek near Alpharetta.
* Until early tomorrow afternoon.
* At 10:15 AM EDT Tuesday the stage was 8.5 feet.
* Flood stage is 7 feet.
* Minor flooding is occurring and minor flooding is forecast.
* Forecast...The river is expected to rise to a crest of 10 feet
this afternoon. It will then fall below flood stage tomorrow
evening.
* Impact...At 10 feet, Minor flooding expands along the creek from
near Cumming to Alpharetta and Roswell. Backyards of homes off
Seale Drive and Gunter Court and portions of the Golf of Georgia
are under a foot of water. The Big Creek Greenway experiences
significant flooding up to 4 feet deep with closure of the paths.
This especially occurs upstream and downstream from the gage on
Kimball Bridge Road and Rock Mill Park. A large portion of the
YMCA Campground off Preston Ridge Road will be under a two feet of
water.
&&
LAT...LON 3410 8425 3410 8420 3404 8425 3402 8430
3404 8433 3407 8427
$$451
WGUS82 KFFC 211733
FLSFFC
Flood Statement
National Weather Service Peachtree City GA
133 PM EDT Tue Sep 21 2021
...The Flood Warning continues 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.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
Additional information is available at weather.gov/atlanta.
&&
GAC117-121-220545-
/O.CON.KFFC.FL.W.0173.000000T0000Z-210922T1707Z/
/APHG1.1.ER.210921T0056Z.210921T1700Z.210922T1500Z.NO/
133 PM EDT Tue Sep 21 2021
...The Flood Warning remains in effect...
The Flood Warning continues for
the Big Creek near Alpharetta.
* Until early tomorrow afternoon.
* At 1:15 PM EDT Tuesday the stage was 8.7 feet.
* Flood stage is 7 feet.
* Minor flooding is occurring and minor flooding is forecast.
* Forecast...The river is expected to fall below flood stage late
tomorrow morning and continue falling to 2.3 feet Sunday morning.
* Impact...At 9 feet, Minor flooding expands along the creek from
near Cumming to Alpharetta and Roswell. Backyards of homes off
Seale Drive and Gunter Court and portions of the Golf of Georgia
begin to flood. The Big Creek Greenway experiences significant
flooding up to 3 feet deep...which results in closure of most of
the paths. This especially occurs upstream and downstream from the
gage on Kimball Bridge Road and Rock Mill Park. A large portion of
the YMCA Campground off Preston Ridge Road will be under a foot of
water.
&&
LAT...LON 3410 8425 3410 8420 3404 8425 3402 8430
3404 8433 3407 8427
$$050
WGUS82 KFFC 220125
FLSFFC
Flood Statement
National Weather Service Peachtree City GA
925 PM EDT Tue Sep 21 2021
...The Flood Warning continues for the following rivers in Georgia...
Big Creek near Alpharetta affecting Fulton and Forsyth Counties.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
Additional information is available at weather.gov/atlanta.
&&
GAC117-121-221330-
/O.CON.KFFC.FL.W.0173.000000T0000Z-210922T1707Z/
/APHG1.1.ER.210921T0056Z.210921T2345Z.210922T2145Z.NO/
925 PM EDT Tue Sep 21 2021
...The Flood Warning remains in effect...
The Flood Warning continues for
the Big Creek near Alpharetta.
* Until early tomorrow afternoon.
* At 9:15 PM EDT Tuesday the stage was 9.1 feet.
* Flood stage is 7 feet.
* Minor flooding is occurring and minor flooding is forecast to
continue.
* Forecast...The river is expected to fall below flood stage
Wednesday afternoon and continue falling to 2.2 feet Sunday
evening.
* Impact...At 9 feet, Minor flooding expands along the creek from
near Cumming to Alpharetta and Roswell. Backyards of homes off
Seale Drive and Gunter Court and portions of the Golf of Georgia
begin to flood. The Big Creek Greenway experiences significant
flooding up to 3 feet deep...which results in closure of most of
the paths. This especially occurs upstream and downstream from the
gage on Kimball Bridge Road and Rock Mill Park. A large portion of
the YMCA Campground off Preston Ridge Road will be under a foot of
water.
&&
LAT...LON 3410 8425 3410 8420 3404 8425 3402 8430
3404 8433 3407 8427
$$406
WGUS82 KFFC 221044
FLSFFC
Flood Statement
National Weather Service Peachtree City GA
644 AM EDT Wed Sep 22 2021
...The Flood Warning continues 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.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
Additional information is available at weather.gov/atlanta.
&&
GAC117-121-221715-
/O.CON.KFFC.FL.W.0173.000000T0000Z-210922T1707Z/
/APHG1.1.ER.210921T0056Z.210921T2345Z.210922T2145Z.NO/
644 AM EDT Wed Sep 22 2021
...The Flood Warning remains in effect...
The Flood Warning continues for
the Big Creek near Alpharetta.
* Until this afternoon.
* At 6:30 AM EDT Wednesday the stage was 8.3 feet and falling.
* Flood stage is 7 feet.
* Minor flooding is occurring and is forecast.
* Forecast...The river is expected to continue to fall and be below
flood stage late this afternoon.
* 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
$$015
WGUS82 KFFC 221640
FLSFFC
Flood Statement
National Weather Service Peachtree City GA
1240 PM EDT Wed Sep 22 2021
...The Flood Warning is cancelled for the following rivers in
Georgia...
Big Creek near Alpharetta affecting Fulton and Forsyth Counties.
GAC117-121-221745-
/O.CAN.KFFC.FL.W.0173.000000T0000Z-210922T1640Z/
/APHG1.1.ER.210921T0056Z.210921T2345Z.210922T2000Z.NO/
1240 PM EDT Wed Sep 22 2021
...The Flood Warning for the Big Creek near Alpharetta has been
cancelled...
The Flood Warning is cancelled for
the Big Creek near Alpharetta.
* At 12:30 PM EDT Wednesday the stage was 6.5 feet.
* Flood stage is 7 feet.
* Forecast...The river is expected to fall below 6 feet by late
tonight.
&&
LAT...LON 3410 8425 3410 8420 3404 8425 3402 8430
3404 8433 3407 8427
$$The office that day
Everything else NWS Atlanta, GA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 20, 8:24 PM EDT | Flash Flood Warning | FFC | Baldwin, Washington, Wilkinson | 2 hr |
| Sep 20, 10:45 PM EDT | Special Weather Statement | FFC | Schley | 30 min |
| Sep 21, 5:58 AM EDT | River Flood Warning | FFC | Chattooga | 11 hr |
| Sep 21, 6:09 PM EDT | Special Weather Statement | FFC | Bibb, Jasper, Jones, Putnam | 36 min |
| Sep 21, 7:10 PM EDT | Special Weather Statement | FFC | Houston, Twiggs | 35 min |
| Sep 21, 7:46 PM EDT | Special Weather Statement | FFC | Houston | 29 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.