2 concurrent flood warnings — 6 counties affected
A severe flood outbreak began in Dawson, Union, and Forsyth Counties in Georgia and Knox County in Tennessee on July 17, 2026. Homes in the affected areas face water damage and mold risk.
Overview written from official NOAA / National Weather Service data.
- Type
- Flood Outbreak
- Began
- Status
- Ongoing
Affected by this event? Open your area's damage guides below to reach a vetted local restoration pro, 24/7.
Warnings covered
2 active warnings in this outbreak
This page tracks the outbreak as a whole; each entry below is one official warning thread with its own live status, map and update log.
- Flash Flood Warning — DeKalb, GA +1DeKalb, GA; Gwinnett, GAsevereActive
- Flash Flood Warning — Forsyth, GA +1Forsyth, GA; Gwinnett, GAsevereActive
- Flash Flood Warning — Anderson, TN +5Anderson, TN; Blount, TN; Knox, TN; Loudon, TN; Roane, TN; Union, TNsevereEnded
- Flash Flood Warning — Cherokee, GA +4Cherokee, GA; Cobb, GA; DeKalb, GA; Fulton, GA; Gwinnett, GAsevereEnded
- Flash Flood Warning — Dawson, GA +1Dawson, GA; Lumpkin, GAsevereEnded
- Flash Flood Warning — Towns, GA +1Towns, GA; Union, GAsevereEnded
Affected areas & guides
Every area named for this event, per the official source. Open yours for damage guides — what to do first, and how to reach a vetted restoration pro, 24/7.
Gwinnett County, GA ≈ 8 mi
DeKalb County, GA ≈ 4 mi
Knox County, TN ≈ 7 mi
Forsyth County, GA ≈ 12 mi
Dawson County, GA ≈ 10 mi
Union County, GA ≈ 7 mi
Affected area map
This alert covers multiple forecast zones — the source publishes no single perimeter, so each marker shows the center of one affected zone reported by NOAA / National Weather Service (Gwinnett County, GA; DeKalb County, GA; Knox County, TN; Forsyth County, GA; Dawson County, GA; Union County, GA). The markers are all part of this ONE alert, not separate incidents. Pan and zoom to explore the map.
Interactive affected-area map
Gwinnett County, GA; DeKalb County, GA; Knox County, TN; Forsyth County, GA; Dawson County, GA; Union County, GA · Enable JavaScript to explore the map.
2026-07-17 21:27 UTC · snapshot 4 of 4
View the timeline — how the reported area changed
Shown as reported by our sources — not an official product. For current advisories and the authoritative map, see NOAA / National Weather Service ↗.
Latest updates
Official updates and news coverage for this event, newest first — National Weather Service products, local storm reports, incident updates and press headlines. Official items are verbatim government text; news headlines link out to the original outlet.
- Storm report NWS FFC storm report
FLASH FLOOD — 2 NE Stone Mountain, GA
Flooding over 2 left lanes of US78 W at Hugh Howell Road.
- Storm report NWS FFC storm report
FLASH FLOOD — 2 NE Pleasant Hill, GA
Flooding reported at I-85N and University Parkways.
- Storm report NWS FFC storm report
FLASH FLOOD — 2 SE Doraville, GA
Left lane flooded on I-285 Southbound at Chamblee Ticked Rd.
- Storm report NWS FFC storm report
FLASH FLOOD — 3 ESE East Ellijay, GA
Water flowing over Owl Town Rd.
Show 10 earlier updates
- NWS MRX storm report Storm report
- NWS FFC storm report Storm report
- NWS FFC storm report Storm report
- NWS FFC storm report Storm report
- NWS Peachtree City GA Bulletin
- NWS Peachtree City GA Bulletin
- NWS Morristown TN Bulletin
- NWS Peachtree City GA Bulletin
- NWS Peachtree City GA Bulletin
- NWS Peachtree City GA Bulletin
Updates are captured automatically from official and news sources, and may lag the live source. For the very latest, see NOAA / National Weather Service ↗.