People outdoors should seek shelter immediately. Motorists should slow down and be prepared for possible loss of control due to hydroplaning.

A strong thunderstorm will impact portions of central Cherokee, Forsyth, southwestern Lumpkin, north central Gwinnett, Dawson, central Hall, northeastern Fulton and Pickens Counties through 515 AM EDT... At 443 AM EDT, a strong thunderstorm was over Ducktown, or near Cumming, moving southeast at 35 mph. HAZARD...Winds up to 40 mph and heavy rain. SOURCE...Radar indicated. IMPACT...Expect minor damage to tree limbs and blowing around of light, unsecured objects. Heavy rain may cause temporary street flooding especially in poor drainage areas. Locations impacted include... Gainesville, Canton, Cumming, Jasper, Dawsonville, Alpharetta, Milton, Sugar Hill, Suwanee, Buford, Flowery Branch, Oakwood, Ball Ground, Nelson, Waleska, Rest Haven, Free Home, Buffington, Dougherty and Hickory Flat. MAX HAIL SIZE...0.00 IN MAX WIND GUST...40 MPH