Alert archive / Georgia / River Flood Warnings in 2021

River Flood Warning 22, NWS Atlanta, GA

March 18, 2021Gwinnett County, Georgia

NWS Atlanta, GA issued this river flood warning at Mar 18, 2021, 2:38 PM EDT for Gwinnett County, Georgia. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued
Mar 18, 2021, 2:38 PM EDT (18:38 UTC)
Expired
Mar 18, 2021, 6:05 PM EDT
In force
3 hr
Issued by
NWS Atlanta, GA
Area
Storm-based polygon
Flood severity
Minor

County Gwinnett County, GA

The radar

The Atlanta radar (KFFC), 76 km from the middle of the area, began a volume at 18:38 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 Sweetwater Creek (E ATL) at Club Drive near Lilburn (STWG1). The gauge peaked at 11.08 ft at Mar 18, 2021, 3:00 PM EDT.

actionminormoderate5101503/1803/19
Action stage
9 ft
Minor stage
11 ft
Moderate stage
15 ft
Major stage
19 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 02205865, 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.

918 
WGUS42 KFFC 181838
FLWFFC

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Peachtree City GA
238 PM EDT Thu Mar 18 2021

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

  Sweetwater Creek near Lilburn affecting Gwinnett County.

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.


GAC135-190215-
/O.NEW.KFFC.FL.W.0022.210318T1838Z-210319T0202Z/
/STWG1.1.ER.210318T1807Z.210318T1900Z.210318T2001Z.UU/
238 PM EDT Thu Mar 18 2021

The National Weather Service in Peachtree City has issued a

* Flood Warning for
  the Sweetwater Creek near Lilburn.
* From this afternoon to this evening.
* At 2:15 PM EDT Thursday the stage was 11 feet and rising slowly.
* Flood stage is 11 feet.
* Minor flooding will continue.
* Forecast...The river is expected to fall below flood stage late 
  this afternoon and continue falling to 9.2 feet this evening.
* Impact...At 11 feet, Flood stage is reached. Minor flooding will 
  occur in portions of the Northwood Country Club Golf Course 
  upstream from the gage on Club Drive...and in the woodland areas 
  downstream from the gage and for the next four miles until the 
  creek merges with the Yellow River. An old concrete golf cart 
  bridge around 300 feet downstream from the gage will begin to 
  flood.


&&

LAT...LON 3397 8414 3397 8407 3390 8406 3389 8408
      3389 8412

$$
1 follow-up statement
820 
WGUS82 KFFC 182205
FLSFFC

Flood Statement
National Weather Service Peachtree City GA
605 PM EDT Thu Mar 18 2021

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

  Sweetwater Creek near Lilburn affecting Gwinnett County.

GAC135-182315-
/O.CAN.KFFC.FL.W.0022.000000T0000Z-210318T2205Z/
/STWG1.1.ER.210318T1807Z.210318T1900Z.210318T2001Z.UU/
605 PM EDT Thu Mar 18 2021

...The Flood Warning for the Sweetwater Creek near Lilburn has been 
cancelled...

The Flood Warning is cancelled for
  the Sweetwater Creek near Lilburn.
* At 5:15 PM EDT Thursday the stage was 10.6 feet.
* Flood stage is 11.0 feet.
* Forecast...The river will continue to fall to 9.0 feet later this 
  evening.


&&

LAT...LON 3397 8414 3397 8407 3390 8406 3389 8408
      3389 8412

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 17, 8:01 PM EDTSevere Thunderstorm WarningFFCHouston, Twiggs29 min
Mar 17, 11:32 PM EDTRiver Flood WarningFFCWalker12 hr
Mar 18, 12:12 AM EDTSevere Thunderstorm WarningFFCBartow, Chattooga, Floyd, Gordon, Haralson, Paulding and 1 more48 min
Mar 18, 12:23 AM EDTFlash Flood WarningFFCBartow, Catoosa, Chattooga, Dade, Floyd, Gordon and 4 more7 hr
Mar 18, 12:44 AM EDTSpecial Weather StatementFFCChattahoochee, Harris, Muscogee, Stewart31 min
Mar 18, 1:01 AM EDTSpecial Weather StatementFFCBartow, Cherokee, Haralson, Paulding, Polk29 min
Mar 18, 2:12 AM EDTRiver Flood WarningFFCCatoosa22 hr
Mar 18, 3:21 AM EDTRiver Flood WarningFFCMurray, Whitfield47 hr
Mar 18, 4:09 AM EDTWind AdvisoryFFCBaldwin, Banks, Barrow, Bartow, Bibb, Bleckley and 90 more16 hr
Mar 18, 9:34 AM EDTSpecial Weather StatementFFCCrisp, Dooly26 min
Mar 18, 9:57 AM EDTSpecial Weather StatementFFCPulaski33 min
Mar 18, 10:32 AM EDTSpecial Weather StatementFFCDodge28 min
Mar 18, 10:58 AM EDTSpecial Weather StatementFFCJohnson, Laurens32 min
Mar 18, 11:07 AM EDTSpecial Weather StatementFFCDodge23 min
Mar 18, 7:13 PM EDTRiver Flood WarningFFCFloyd20 hr

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.