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TUESDAY’S WEATHER-TRAFFIC: With high humidity, rain to develop earlier in the day

A weather system in the Gulf of Mexico is providing North Georgia with plenty of tropical moisture to fuel another round of storms Tuesday, according to Channel 2 Action News.

The system, now an area of low pressure, is moving by to the south. Channel 2 meteorologist Brian Monahan said it has a good chance of developing into a tropical depression or storm over the next few days, but the current storm track shows it’s headed away from the Georgia coast and toward the north central part of the Gulf.

“You hear that and you think no impacts from this system,” he said. “Not exactly.”

The low pressure will provide a good coverage of storms Tuesday, and even as it moves away at the end of the week, he said North Georgia won’t be done with the tropical moisture. A cold front moving in from the north will help to pull it back into the state.

“The actual system will be moving into the northwest Gulf and away from us, but still some rain here in North Georgia,” he said.

Showers and storms are forecast to pop up earlier in the day Tuesday. The rain took its time Monday, but Monahan said North Georgia should expect to see raindrops develop from the late morning to early afternoon, when the rain chance increases to 60 percent.

“Most of us are under a mix of sun and clouds, but a few of us are going to have some downpours early this afternoon, and more of us through the second half of the day,” he said. “Just like yesterday, just like Sunday, the downpours are going to be the biggest threat.”

Monahan also expects a good bit of lightning with some of the storms. Weather is forecast to be pretty active through the evening commute and toward sunset as the storms roll through.

“Keep that in mind for your early evening plans,” he said.

In between the storms, Monahan said North Georgia will be hot and humid with afternoon highs in the low to mid-90s. Atlanta is forecast to top out at 91 degrees.

“The temperatures, by the way, are just one part of the story,” he said. “With the humidity, it’s going to feel even hotter across North Georgia.”

The humidity is already cranked up Tuesday morning. Dew points, the measure of moisture in the air, and temperatures are running close together in the 70s, according to Channel 2. By 9 a.m., it will feel more like the low 80s in metro Atlanta, Monahan said.

“That’s why we talk about the heat index, that combination of the temperature and the humidity, what it actually feels like as you spend time outside today,” he said.

Once the temperatures start to rise, the heat indexes will, too. Monahan said it could feel more like the low to mid-90s by 1 p.m., and some spots will feel like it’s closer to 100 degrees later in the afternoon.

High temperatures will stay in the low 90s through Wednesday, but they drop into the 80s Thursday and Friday when the bulk of the rain is expected, according to the latest forecast.

With showers over northeast Georgia already gone Tuesday morning, conditions are pretty close to ideal on metro Atlanta roadways, according to Channel 2.

“We’ve got dry pavement,” WSB traffic reporter Ashley Frasca. “We don’t have a lot of folks on the roads just yet.”

Volume is building but there are no major incidents to slow things down, she said. On the surface streets, drivers will want to use caution on Northside Drive at I-75, where a traffic signal is flashing red, according to the WSB 24-hour Traffic Center.

Another signal is out at Peachtree Industrial Boulevard and I-285 in DeKalb County, the Traffic Center reported. Expect some delays getting onto the interstate.

And in Henry County, construction is blocking multiple lanes of Ga. 155 between Turner Church and John Frank Ward roads. There are delays leaving the McDonough Square, the Traffic Center reported.

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

» Download The Atlanta Journal-Constitution app for weather alerts on-the-go.

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