Alert archive / Georgia / River Flood Warnings in 2021

River Flood Warning 112, NWS Atlanta, GA

May 5, 2021Gwinnett County, Walton County, Georgia

NWS Atlanta, GA issued this river flood warning at May 5, 2021, 2:42 AM EDT for Gwinnett County, Walton County, Georgia. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued
May 5, 2021, 2:42 AM EDT (06:42 UTC)
Expired
May 5, 2021, 6:43 AM EDT
In force
4 hr
Issued by
NWS Atlanta, GA
Area
Storm-based polygon
Flood severity
Minor

Counties Gwinnett County, GA, Walton County, GA

The radar

The Atlanta radar (KFFC), 87 km from the middle of the area, began a volume at 06:43 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 Alcovy River at New Hope Road near Grayson (ALCG1). The gauge peaked at 9.24 ft at May 5, 2021, 4:00 AM EDT.

actionminormoderate51005/0505/06
Action stage
7 ft
Minor stage
9 ft
Moderate stage
11 ft
Major stage
16 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 02208150, 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.

639 
WGUS42 KFFC 050642
FLWFFC

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Peachtree City GA
242 AM EDT Wed May 5 2021

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

  Alcovy River near Lawrenceville affecting Gwinnett and Walton 
  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.

Additional information is available at weather.gov/atlanta.

&&


GAC135-297-051845-
/O.NEW.KFFC.FL.W.0112.210505T0642Z-000000T0000Z/
/ALCG1.1.ER.210505T0627Z.000000T0000Z.000000T0000Z.UU/
242 AM EDT Wed May 5 2021

The National Weather Service in Peachtree City has issued a

* Flood Warning for
  the Alcovy River near Lawrenceville.
* From early this morning until further notice.
* At 2:31 AM EDT Wednesday the stage was 9 feet and rising.
* Flood stage is 9 feet.
* Minor flooding is occurring.
* Forecast...Minor flooding is forecast until further notice.
* Impact...At 9.0 feet, Flood stage is reached. Minor flooding 
  begins of the woodlands upstream and downstream from the river 
  gauge at New Hope Road.


&&

LAT...LON 3391 8394 3394 8392 3396 8388 3383 8374
      3379 8379

$$
1 follow-up statement
567 
WGUS82 KFFC 051043
FLSFFC

Flood Statement
National Weather Service Peachtree City GA
643 AM EDT Wed May 5 2021

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

  Alcovy River near Lawrenceville affecting Gwinnett and Walton 
  Counties.

GAC135-297-051145-
/O.CAN.KFFC.FL.W.0112.000000T0000Z-210505T1043Z/
/ALCG1.1.ER.210505T0627Z.210505T0746Z.210505T0905Z.UU/
643 AM EDT Wed May 5 2021

...The Flood Warning for the Alcovy River near Lawrenceville has 
been cancelled...

The Flood Warning is cancelled for
  the Alcovy River near Lawrenceville.
* At 6:16 AM EDT Wednesday the stage was 8.5 feet and falling.
* Flood stage is 9 feet.
* Forecast...The river will continue to fall below flood stage.


&&

LAT...LON 3391 8394 3394 8392 3396 8388 3383 8374
      3379 8379

$$

The office that day

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

IssuedProductOfficeCountiesLasted
May 4, 8:24 PM EDTFlash Flood WarningFFCHeard, Troup4 hr
May 4, 8:25 PM EDTSevere Thunderstorm WarningFFCChattahoochee, Harris, Meriwether, Muscogee, Talbot, Troup50 min
May 4, 8:34 PM EDTSpecial Weather StatementFFCDodge26 min
May 4, 8:41 PM EDTRiver Flood WarningFFCPolk10 hr
May 4, 8:46 PM EDTSevere Thunderstorm WarningFFCStewart, Webster44 min
May 4, 8:55 PM EDTSevere Thunderstorm WarningFFCMarion50 min
May 4, 8:58 PM EDTSevere Thunderstorm WarningFFCCoweta, Fayette, Meriwether, Pike, Spalding32 min
May 4, 9:15 PM EDTSevere Thunderstorm WarningFFCCrawford, Lamar, Macon, Marion, Meriwether, Monroe and 8 more45 min
May 4, 9:20 PM EDTSpecial Weather StatementFFCTelfair25 min
May 4, 9:50 PM EDTSevere Thunderstorm WarningFFCBibb, Crawford, Crisp, Dooly, Houston, Lamar and 7 more25 min
May 4, 10:01 PM EDTSpecial Weather StatementFFCTelfair29 min
May 4, 10:14 PM EDTRiver Flood WarningFFCChattooga8 hr
May 4, 10:16 PM EDTSpecial Weather StatementFFCBibb, Bleckley, Crisp, Dodge, Dooly, Houston and 5 more29 min
May 4, 10:46 PM EDTSpecial Weather StatementFFCBaldwin, Bleckley, Dodge, Jones, Laurens, Telfair and 3 more44 min
May 4, 10:51 PM EDTRiver Flood WarningFFCCobb, Douglas64 hr
May 4, 11:26 PM EDTSpecial Weather StatementFFCEmanuel, Glascock, Jefferson, Johnson, Montgomery, Telfair and 4 more49 min
May 4, 11:32 PM EDTRiver Flood WarningFFCCobb7 hr
May 5, 12:42 AM EDTRiver Flood WarningFFCForsyth11 hr
May 5, 12:55 AM EDTRiver Flood WarningFFCCobb10 hr
May 5, 1:45 AM EDTRiver Flood WarningFFCHaralson24 hr
May 5, 5:51 AM EDTRiver Flood WarningFFCBibb, Houston, Jones, Monroe, Twiggs4 days
May 5, 6:36 AM EDTRiver Flood WarningFFCGwinnett9 hr
May 5, 6:46 AM EDTRiver Flood WarningFFCCarroll, Coweta, Heard19 hr
May 5, 11:07 AM EDTRiver Flood WarningFFCCobb, Paulding18 hr
May 5, 3:08 PM EDTRiver Flood WarningFFCFloyd31 hr
May 5, 6:12 PM EDTRiver Flood WarningFFCCobb, Douglas19 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.