Metro Atlanta could experience flooding after midnight Wednesday.
The National Weather Service has issued a flood watch south of Cumming that extends through most of Thursday, from 1 a.m. to 7 p.m.
As much as half an inch of rain an hour was falling in parts of Georgia Wednesday night, forecasters said, but the heavy stuff's not expected to hit Atlanta until daybreak. Rainfall should taper off around noon.
As much as 2 to 3 inches is expected from late Wednesday night through Thursday evening.
The area in Georgia with the greatest rainfall potential is north of a line from West Point to Milledgeville to Athens, an area that includes all of metro Atlanta.
"If we start going over two or three inches of rain, we could get some flooding," meteorologist Matt Sena told the AJC on Wednesday evening.
There's also a chance of strong thunderstorms Thursday afternoon, the Weather Service said early Wednesday morning, adding that "an isolated tornado or two cannot be ruled out."
The chance of rain increases to 100 percent overnight and during the day on Thursday before tapering off to 30 percent Thursday night.
Highs will be near 60 degrees, with lows around 50.
Partly sunny skies are forecast for Friday and Saturday, with highs in the upper 50s and lows in the mid-30s to low 40s.
There's a 70 percent chance of showers and thunderstorms Saturday night and Sunday, the Weather Service said.
Staff writer Mike Morris contributed to this article.
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