Heavy rain drenching metro Atlanta, with more to come

7:15 a.m.: The National Weather Service has issued a flood warning for area of north Fulton and Forsyth counties along Big Creek, which is expected to rise to 1 to 2 feet above flood stage, causing minor flooding.

Meanwhile, rainfall totals thorugh 7 a.m. range from 1.36 inches in Marietta and 1.48 inches at Hartsfield-Jackson International Airport to 2.68 inches in Alpharetta, 2.79 inches in Cartersville, 2.82 inches in Dunwoody and 3.01 inches in Dallas.

6:30 a.m.: Rainfall totals continue to climb, and range from 1.04 inches in Marietta and 1.21 inches at Hartsfield-Jackson International Airport to 2.27 inches in Alpharetta, 2.39 inches in Dunwoody and 2.56 inches in Dallas.

To the west in the Birmingham, Ala., area, authorities are using boats to rescue residents from a flooded apartment complex and mobile home park.

Previous story: Heavy rain drenched metro Atlanta during the early stages of Monday's morning commute, with more downpours likely throughout the day.

Most of north and central Georgia is under a flood watch, and just before 4:30 a.m., a flood warning was issued for Chattooga and Floyd counties in the northwest corner of the state.

That flood warning is in effect through 10:15 a.m., while the broader flood watch runs through late Monday night.

Weather radar at 5:30 a.m. showed the heaviest rainfall in a band between I-20 and I-85 southwest of Atlanta, moving to the northeast toward the downtown area. A few thunderstorms were also embedded in the rain, and Channel 2 meteorologist Karen Minton said there's a slight chance thunderstorms could become severe Monday.

In Douglas County, lightning reportedly sparked a fire on Brownsville Road before 6 a.m. Monday.

The stormy weather was also causing scattered power outages. Georgia Power reported about 1,500 customers statewide without electricity just before 6 a.m.

Minton said the chance of rain is 100 percent Monday, diminishing to 40 percent Tuesday.

Highs will be around 70 degrees Monday and in the mid-60s Tuesday, with morning lows Tuesday in the upper 40s.

Wednesday should be sunny, with highs in the mid-60s and lows in the upper 40s.

The sunny conditions should continue through Friday, Minton said. Highs will be in the low 70s Thursday and mid-70s Friday, with lows in the mid-40s to 50 degrees.