Flash flood warning issued until 9 p.m. in metro Atlanta

A flash flood warning issued by the National Weather Service in Peachtree City is set to run until 9:00 p.m. Saturday, with thunderstorms dumping extreme rainfall across parts of north metro Atlanta. Communities including Lawrenceville, Peachtree Corners, Dulu

ATLANTA — For thousands of residents in metro Atlanta, the evening commute and holiday plans are sitting on a knife’s edge as severe summer storms dump torrential rain across the region.

A flash flood warning issued by the National Weather Service in Peachtree City is in effect until 9:00 p.m. Saturday. At 5:59 p.m., Doppler radar tracked thunderstorms unloading extreme rainfall across the area. Between 1 and 3 inches of rain have already fallen. and additional rainfall amounts of 1 to 2 inches remain entirely possible as the storms linger. Flash flooding is ongoing or expected to begin shortly.

The warning covers areas where water can rise fast — especially along small creeks, streams, highways, streets, and underpasses, along with urban centers and low-lying zones with poor drainage. The emergency alert spans northwestern DeKalb County and southwestern Gwinnett County.

Locations that could experience flash flooding include Lawrenceville, Peachtree Corners, Dunwoody, Duluth, Lilburn, Chamblee, Norcross, Doraville, and Clarkston. Other impacted areas facing immediate water hazards include Stone Mountain. Avondale Estates. Berkeley Lake. Pine Lake. Tucker. North Decatur. Belvedere Park. Mountain Park. and Mechanicsville.

If you’re traveling through the area, officials urge one hard rule of road safety: turn around, don’t drown when encountering flooded roads. Drivers are told not to attempt to navigate through covered blacktop, with the warning that the vast majority of flood-related deaths occur inside vehicles.

While the flash flood threat has moved into the foreground. the weekend’s weather story has broader stakes for large outdoor crowds. America’s semiquincentennial weekend in Atlanta was shaping up to be an absolute scorcher. with high temperatures and thick humidity following attendees to major outdoor gatherings — from Braves games to parades and evening fireworks displays. On Saturday morning. the city is expected to wake up to 78 degrees. and athletes preparing for the annual Peachtree Road Race will feel that sticky conditions over long stretches of outdoor time.

Weather models show a high probability of afternoon pop-up storms developing around local water sources like the Chattahoochee River, with a localized shower possibly breaking out directly over Midtown and downtown Atlanta toward the tail end of the event.

Even as storm chances remain low for the first half of the weekend. forecasters peg overall rain configuration for both Friday and Saturday at a low 20%. The focus for now has been on maximizing time outdoors earlier. with storm chances rising sharply by the end of the holiday stretch. On Sunday and moving into Monday. a robust batch of regional moisture is expected to move in. pushing storm chances up to 50%.

For one of Atlanta’s proudest traditions, the heat is already reshaping the day. The Atlanta Track Club announced that Saturday’s annual Peachtree Road Race will start under a red flag alert. indicating potentially dangerous running conditions. Local runner Sophie Boice said she has been trying to shift her final training sessions into the early mornings to beat the sun. but described it as one of the hottest summers she has ever seen. “It really kind of comes out of nowhere,” Boice said. “Being out here in just ten minutes, it can make you feel a little bit faint. Sometimes you’re not aware of how dehydrated you can be or how you’re feeling because the heat makes you so fatigued. You really have to be aware and make sure you’re drinking enough water.”.

Medical professionals warn that heat illness can escalate quickly. Dr. Cecil Bennett with Newnan Family Medicine said heat exhaustion can rapidly transition into heat stroke — a life-threatening medical emergency. He listed key symptoms of heat exhaustion as heavy. uncontrolled sweating; mild confusion or disorientation; nausea or vomiting; and dizziness and faintness. Bennett advised. “Preparation involves having a lot of water. a lot of fluids on hand. and drinking constantly. not waiting until you’re thirsty.” He also warned that heat exhaustion can happen indoors for those living without functioning air conditioning. and urged families to keep a close eye on children. senior citizens. and anyone with underlying health issues over the next few days.

Local governments are already responding to the strain on residents trying to get through the weekend. DeKalb County officials announced that four daytime cooling centers will open to provide a safe haven from the elements. DeKalb County CEO Lorraine Cochran-Johnson said the centers will offer more than just air conditioning. “These centers will provide a safe. cool space as well as water. but also we will be providing wraparound services at all of our cooling stations. ” Cochran-Johnson said.

The City of Atlanta is taking a different approach. City officials confirmed that standard municipal cooling stations will be closed over the weekend due to the holiday. Instead, city workers will be actively distributing bottled water to vulnerable residents in outdoor areas to combat dehydration.

The flash flood warning and the push for cooling and hydration land on the same shared reality: the weekend’s weather is not just uncomfortable — it can become dangerous quickly. And as the warning remains active until 9:00 p.m. residents across northwestern DeKalb County and southwestern Gwinnett County are being asked to treat the next few hours with caution. not optimism.

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