Alert archive / Georgia / River Flood Warnings in 2026
River Flood Warning 32, NWS Atlanta, GA
NWS Atlanta, GA issued this river flood warning at Sep 12, 2026, 12:32 PM EDT for Cobb County, Georgia. It was in force for 3 hr.
The area
The outline as issued.
The facts
- Issued
- Sep 12, 2026, 12:32 PM EDT (16:32 UTC)
- Expired
- Sep 12, 2026, 3:51 PM EDT
- In force
- 3 hr
- Issued by
- NWS Atlanta, GA
- Area
- Storm-based polygon
- Flood severity
- Minor
County Cobb County, GA
The radar
The Atlanta radar (KFFC), 51 km from the middle of the area, began a volume at 16:33 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 Nickajack Creek at US Highway 78 and 278 near Mableton (NICG1). The gauge peaked at 11.05 ft at Sep 12, 2026, 1:00 PM EDT.
- Action stage
- 8 ft
- Minor stage
- 10 ft
- Moderate stage
- 16 ft
- Major stage
- 21 ft
This gauge today: stage, forecast and historic crests
Stage from the USGS instantaneous record for site 02336635, 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.
205
WGUS42 KFFC 121632
FLWFFC
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Peachtree City GA
1232 PM EDT Sat Sep 12 2026
...The National Weather Service in Peachtree City GA has issued a
Flood Warning for the following rivers in Georgia...
Nickajack Creek at US 278 near Mableton affecting Cobb 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.
&&
GAC067-130500-
/O.NEW.KFFC.FL.W.0032.260912T1632Z-000000T0000Z/
/NICG1.1.ER.260912T1551Z.260912T1600Z.000000T0000Z.NO/
1232 PM EDT Sat Sep 12 2026
...FLOOD WARNING IN EFFECT FROM THIS AFTERNOON UNTIL FURTHER
NOTICE...
* WHAT...Minor flooding is occurring.
* WHERE...Nickajack Creek at US 278 near Mableton.
* WHEN...From this afternoon until further notice.
* IMPACTS...At 10.0 feet, Flood stage is reached. Minor flooding will
occur in the woodlands and the natural flood plain upstream and
downstream from the gage at Veterans Memorial Highway. Portions of
Nickajack Park will begin to flood around one mile upstream from
the gage.
* ADDITIONAL DETAILS...
- At 12:00 PM EDT Saturday the stage was 10.2 feet.
- Recent Activity...The maximum river stage in the 24 hours ending
at 12:00 PM EDT Saturday was 10.2 feet.
- Forecast...No forecast is available for this location.
- Flood stage is 10.0 feet.
- Flood History...This crest compares to a previous crest of 10.2
feet on 12/30/2021.
- http://www.weather.gov/safety/flood
&&
LAT...LON 3377 8455 3385 8459 3389 8454 3384 8448
3381 8449
$$1 follow-up statement
054
WGUS82 KFFC 121951
FLSFFC
Flood Statement
National Weather Service Peachtree City GA
351 PM EDT Sat Sep 12 2026
...The Flood Warning is cancelled for the following rivers in
Georgia...
Nickajack Creek at US 278 near Mableton affecting Cobb County.
GAC067-122100-
/O.CAN.KFFC.FL.W.0032.000000T0000Z-260912T1951Z/
/NICG1.1.ER.260912T1551Z.260912T1700Z.260912T1818Z.NO/
351 PM EDT Sat Sep 12 2026
...FLOOD WARNING IS CANCELLED...
The Flood Warning is cancelled for
the Nickajack Creek at US 278 near Mableton.
* ADDITIONAL DETAILS...
- At 3:00 PM EDT Saturday the stage was 7.9 feet.
- Forecast...No forecast is available for this location.
- http://www.weather.gov/safety/flood
&&
LAT...LON 3377 8455 3385 8459 3389 8454 3384 8448
3381 8449
$$What forecasters said that day
The local office's own words before this river flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Atlanta, GA wrote its last area forecast discussion before this river flood warning went out at Sep 12, 6:46 AM EDT, 5 hours 46 minutes earlier. Its key messages:
- Isolated showers and thunderstorms are possible through daybreak, becoming scattered to numerous in coverage into the afternoon. Any storms that form will be capable of producing gusty winds, frequent lightning, and locally heavy rainfall.
- Repeated rounds of heavy rainfall will support localized flash flooding concerns today, similar to yesterday. Isolated amounts up to 3 to 4" could fall within an hour or two in the strongest cells.
- Comparatively hot and humid conditions will return from Sunday on, with diminishing rain chances (<20%).
Area forecast discussion, Sep 12, 6:46 AM EDT, 5 hours 46 minutes before
Area Forecast Discussion National Weather Service Peachtree City GA 646 AM EDT Sat Sep 12 2026 ...New 12Z Aviation Discussion... .KEY MESSAGES... - Isolated showers and thunderstorms are possible through daybreak, becoming scattered to numerous in coverage into the afternoon. Any storms that form will be capable of producing gusty winds, frequent lightning, and locally heavy rainfall. - Repeated rounds of heavy rainfall will support localized flash flooding concerns today, similar to yesterday. Isolated amounts up to 3 to 4" could fall within an hour or two in the strongest cells. - Comparatively hot and humid conditions will return from Sunday on, with diminishing rain chances (<20%). && .SHORT TERM... (Today through Sunday) Issued at 240 AM EDT Sat Sep 12 2026 Over the course of the day today, a shortwave traversing otherwise quasi-zonal flow at the mid-levels will clip the state from the northwest. The combination of this and a steady stream of moist, southwesterly flow around the Bermuda High at the surface will support the development of waves of showers and thunderstorms beginning this morning and carrying into the afternoon. Last night's 00Z FFC sounding analyzed PWATs of 2.02" -- well exceeding the 90th percentile climatologically, and perhaps even daily maximums. Overall blanket rainfall totals remain low for today (up to three-quarters of an inch), but a high PWAT environment with chances for training/multiple rounds of heavy rainfall means at least an outside chance for localized flash flooding concerns -- with low predictability on exactly where high value bullseyes occur. Localized amounts up to 5" were recorded yesterday, and with near-negligible changes to our parameter space, isolated amounts of 3-4" and perhaps higher are possible. Notably, these totals could be realized over the course of an hour or two, more than sufficient to overwhelm creeks, streams, and storm drains. Chances for organized severe weather remain low given unremarkable sounding profiles and kinematics, but with saturated soils from yesterday's rainfall (and minimal recovery time in between rounds), cannot rule out isolated reports of downed trees even in sub-severe gusts. Highs will be in the mid-80s to lower 90s today, just a bit lower than yesterday owing to the glancing blow from yesterday's front and increased convective coverage. As mid-level ridging moves in aloft on Sunday, meaningful precipitation chances will be effaced by strengthening subsidence. Isolated thunderstorms are possible across our far southern tier, in the vicinity of a lingering tendril of increased moisture, but most will see a dry (if hot) end to the weekend. && .LONG TERM... (Sunday night through Friday) Issued at 240 AM EDT Sat Sep 12 2026 As the long term period begins on Sunday night, an upper level ridge over the south-central CONUS will be slowly building eastward. This ridge and associated surface high pressure will amplify and set up over the east CONUS during the early parts of next week. Low level moisture from the Gulf will persist across north and central Georgia, though dewpoints are forecast to drop slightly into the upper 60s to low 70s with subsidence of drier air from the mid levels under the ridge. This will also inhibit rain chances, with isolated afternoon thunderstorms being largely confined to south- central Georgia on Monday through Wednesday. Conditions across north and central Georgia are expected to be warmest on Monday, rising into the mid 90s across all but the far northeastern mountains. Heat index values are moreover forecast to climb to between 100-103 degrees in areas south of I-85. The axis of the ridge will begin to shift northeast of the forecast area on Tuesday into Wednesday, with the associated surface high moving over the central Appalachians. As this occurs, it will spread a CAD wedge into portions of northeast Georgia, leading to slightly lower dewpoints and high temperatures in the mid to upper 80s in the far northeast and low 90s elsewhere across the forecast area. Rain chances will remain minimal on Tuesday and Wednesday under the ridge, but will begin to rebound during the late parts of the week as the ridge begins to retrograde back to the west of the area. && .AVIATION... (12Z TAFS) Issued at 644 AM EDT Sat Sep 12 2026 A tricky TAF pd. BKN IFR cigs to linger thru 15-16Z, with pds of TWRINC psbl in absence of SHRA/TSRA. Low cigs likely to be accompanied by MVFR vsbys in BR. Gradual improvement to MVFR by 16-18Z. At minimum VC and likely prevailing -SHRA to continue for several hours, with chcs for isold embd TSRA captured by TEMPO from 11-15Z. Brief lull psbl midday, then a return to chcs for TSRA impacts from 18-24Z before clearing occurs overnight. Winds very nearly due S/at times VRB will pick up out of the SW at 4-8kts. //ATL Confidence...12Z Update... Medium confidence all elements. 96 && .PRELIMINARY POINT TEMPS/POPS... Athens 86 69 91 68 / 80 30 0 0 Atlanta 86 72 91 71 / 80 20 0 0 Blairsville 79 65 84 63 / 80 30 0 0 Cartersville 86 70 91 68 / 60 20 0 0 Columbus 89 72 93 72 / 70 20 0 0 Gainesville 83 70 89 69 / 80 20 0 0 Macon 89 71 92 71 / 80 30 20 0 Rome 87 68 91 67 / 60 20 0 0 Peachtree City 87 70 92 69 / 70 10 0 0 Vidalia 91 73 92 73 / 40 30 10 0 && .FFC WATCHES/WARNINGS/ADVISORIES... None. && SHORT TERM...96 LONG TERM....King AVIATION...96
Hazardous weather outlook, Sep 11, 11:22 PM EDT, 13 hours 10 minutes before
Hazardous Weather Outlook National Weather Service Peachtree City GA 1122 PM EDT Fri Sep 11 2026 GAZ001>009-011>016-019>025-027-030>039-041>062-066>076-078>086- 089>098-102>113-130330- Baldwin-Banks-Barrow-Bartow-Bibb-Bleckley-Butts-Carroll-Catoosa- Chattahoochee-Chattooga-Cherokee-Clarke-Clayton-Cobb-Coweta- Crawford-Crisp-Dade-Dawson-DeKalb-Dodge-Dooly-Douglas-Emanuel- Fannin-Fayette-Floyd-Forsyth-Gilmer-Glascock-Gordon-Greene- Gwinnett-Hall-Hancock-Haralson-Harris-Heard-Henry-Houston-Jackson- Jasper-Jefferson-Johnson-Jones-Lamar-Laurens-Lumpkin-Macon- Madison-Marion-Meriwether-Monroe-Montgomery-Morgan-Murray- Muscogee-Newton-North Fulton-Oconee-Oglethorpe-Paulding-Peach- Pickens-Pike-Polk-Pulaski-Putnam-Rockdale-Schley-South Fulton- Spalding-Stewart-Sumter-Talbot-Taliaferro-Taylor-Telfair-Toombs- Towns-Treutlen-Troup-Twiggs-Union-Upson-Walker-Walton-Warren- Washington-Webster-Wheeler-White-Whitfield-Wilcox-Wilkes- Wilkinson- 1122 PM EDT Fri Sep 11 2026 This Hazardous Weather Outlook is for north and central Georgia. .DAY ONE...Tonight... Isolated showers and thunderstorms are possible through the night. Patchy dense fog development is likely as we approach daybreak, especially for areas that received rounds of heavy rainfall today. .DAYS TWO THROUGH SEVEN...Saturday through Thursday... Thunderstorm activity increases and spreads across the area into the weekend. The primary threats in any storms that form are gusty winds, frequent lightning, and locally heavy rainfall. Afternoon heat index values remain into the upper 90s to low 100s each day through early next week. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed through tonight.
In the hours before
Local storm report, Sep 12, 11:24 AM EDT, 1 hour 8 minutes before
Preliminary Local Storm Report
National Weather Service Peachtree City GA
1124 AM EDT Sat Sep 12 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1023 AM Rain Villa Rica 33.73N 84.92W
09/12/2026 M4.00 Inch Carroll GA Public
Picture sent on Twitter.
&&
VSSLocal storm report, Sep 12, 11:36 AM EDT, 56 minutes before
Preliminary Local Storm Report
National Weather Service Peachtree City GA
1136 AM EDT Sat Sep 12 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1000 AM Flash Flood 1 WNW Lake Val-Do-Mar 33.74N 84.90W
09/12/2026 Douglas GA Emergency Mngr
Road washed out Harmon Springs Dr at
Shoreline Pkwy.
&&
VSSLocal storm report, Sep 12, 11:45 AM EDT, 47 minutes before
Preliminary Local Storm Report
National Weather Service Peachtree City GA
1145 AM EDT Sat Sep 12 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0930 AM Flash Flood 2 S Villa Rica 33.70N 84.91W
09/12/2026 Carroll GA Emergency Mngr
6 in of water covering the 3000 block of W
Liberty Rd.
&&
VSSLocal storm report, Sep 12, 11:51 AM EDT, 41 minutes before
Preliminary Local Storm Report
National Weather Service Peachtree City GA
1151 AM EDT Sat Sep 12 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0950 AM Flash Flood 1 SSE Lake Val-Do-Mar 33.73N 84.88W
09/12/2026 Douglas GA Emergency Mngr
Tyson Rd and Veterans Memorial HWY flooding
on the roadway near the train tracks.
&&
VSSLocal storm report, Sep 12, 12:13 PM EDT, 19 minutes before
Preliminary Local Storm Report
National Weather Service Peachtree City GA
1213 PM EDT Sat Sep 12 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1030 AM Flash Flood 3 NW Treasure Lake 33.67N 84.97W
09/12/2026 Carroll GA Emergency Mngr
Water across Kinney Lake Rd.
&&
VSSLocal storm report, Sep 12, 12:21 PM EDT, 11 minutes before
Preliminary Local Storm Report
National Weather Service Peachtree City GA
1221 PM EDT Sat Sep 12 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1100 AM Flash Flood 4 SSE Villa Rica 33.69N 84.89W
09/12/2026 Douglas GA Emergency Mngr
Cole Rd is flooded and closed.
&&
VSSThe office that day
Everything else NWS Atlanta, GA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 12, 7:21 AM EDT | Flash Flood Warning | FFC | Carroll, Cobb, Douglas, Paulding | 5 hr |
| Sep 12, 9:34 AM EDT | Flash Flood Warning | FFC | Carroll, Douglas | 95 min |
| Sep 12, 9:39 AM EDT | Flash Flood Warning | FFC | Cobb, DeKalb, Douglas, Fulton | 3 hr |
| Sep 12, 10:23 AM EDT | Flash Flood Warning | FFC | Cobb, DeKalb, Fulton | 69 min |
| Sep 12, 3:42 PM EDT | Special Weather Statement | FFC | Laurens | 33 min |
Nearby
River Flood Warnings in Georgia, 2026Every 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.