LIVE WEATHER-TRAFFIC: Severe thunderstorm warnings canceled for east metro Atlanta counties

ATLANTA FORECAST

Wednesday: High: 86

Wednesday night: Low: 71

Thursday: High: 82

» For a detailed forecast, visit The Atlanta Journal-Constitution weather page.

[5:43 p.m.]: The severe thunderstorm warnings have been canceled for Gwinnett, Hall, Barrow and Jackson counties.

[5:41 p.m.]: All I-75 North lanes have reopened after a fiery tractor-trailer crash in Cobb County. 

MORE: I-75 lanes reopen after fiery tractor-trailer crash injures 1 in Cobb

[5:20 p.m.]: A tree that fell on MARTA's Gold line track has been removed, according to a tweet.

[5:19 p.m.]: A vehicle fire on I-75/I-85 North near Peachtree Road has blocked two right lanes, the Traffic Center reported. Delays span back before University Avenue.

UPDATE [5:13 p.m.]: Severe thunderstorm warnings have been issued for Gwinnett, Hall, Barrow and Jackson counties until 6 p.m. by the National Weather Service.

ORIGINAL STORY: A wave of heavy rain is slowly moving through metro Atlanta, and the storms are starting to affect traffic and cause other problems.

It's looking like a wet evening commute, according to the WSB 24-hour Traffic Center.

“Part of the commute is going to be rather messy,” Channel 2 Action News meteorologist Karen Minton said.

A tree has also fallen on the southbound MARTA tracks between the Chamblee and Brookhaven stations, which is causing delays on the Gold line, MARTA said in a tweet.

Single-tracking is in effect, and delays are about 10 minutes from the Chamblee station to Lindbergh Station and from the Lenox station to Doraville station, MARTA spokeswoman Stephany Fisher told AJC.com.

The Traffic Center reported that I-20, I-285 and I-75 are all seeing effects from the rain.

Only the right lane of I-285 North is open near La Vista Road after a crash and vehicle fire, which is causing heavy delays, the Traffic Center reported. Two southbound left lanes are also blocked in the area.

Marietta police said North Marietta Parkway between Roswell Road and Wallace Road has lanes closed in both directions because of an overturned vehicle.

Ga. 166 is also flooding near DeLowe Drive and Stanton Road, and all lanes are affected, according to the Georgia Department of Transportation.

The rain is further complicating issues on I-75 North near Chastain Road, which is gridlocked because of a multi-vehicle wreck, including a tractor-trailer that was on fire.

MORE: Tractor-trailer fire causing I-75 lane closures in Cobb

The weather front is bringing more rain to already soggy northwest Georgia. The National Weather Service has issued a flash flood watch for 15 northwest Georgia counties, including Polk, Floyd, Bartow, Gordon and Pickens.

The region has already seen 3 to 5 inches of rainfall over the past few days, Minton said. Pickens and Bartow counties are also under flash flood warnings until 8 p.m.

“More rain falling just means runoff,” Minton said. “It can’t soak into the ground, so it is going to be running off, which could pose some problems for the creeks and the streams in these areas.”

An additional 2 to 3 inches of rain is expected to fall, with isolated spots getting 4 more inches. The flash flood watch is in effect through Thursday night.

The cold front is expected to dominate North Georgia weather over the next several days.

“It’s going to be sliding into the state, but it is going to continue to be slow-moving, so not everyone is going to get it all at once,” she said.

Wednesday has a 60 percent chance of scattered storms, and Thursday’s chance goes up to 80 percent. The rain chances diminish through the end of the week, but the wet weather is not expected to begin to clear until Sunday, according to Channel 2.

What the front won’t bring is cold air.

The temperature should still reach the mid-80s, which is about five degrees warmer than average.

The warmer weather will be especially noticeable in the morning hours. On average, the Atlanta morning low temperature for this time of year is about 61 degrees. It was 13 degrees warmer than that Tuesday, according to Channel 2.

» For updated traffic information, listen to News 95.5 and AM 750 WSB and follow @ajcwsbtraffic on Twitter.