The Brief A cold front drifting into north Georgia is expected to increase rain and storm chances starting Thursday afternoon. The front is pulling tropical moisture from Tropical Storm Bertha. Rain and thunderstorm chances are expected to increase starting Thursday afternoon, triggering a Flood watch for portions of far north Georgia through Friday evening. What we know:With a cold front drifting into north Georgia, storm and rain chances can bring heavy rain, which can cause possible flooding. Tropical Storm Bertha is currently grazing the Louisiana Gulf Coast with 45 mph winds and moving toward the upper Texas coast at a faster pace of 13 mph.