SOUTH CAROLINA — Two rainfall hot spots are emerging across the Carolinas and Georgia as moisture from Hurricane Isaias wraps in from both the Gulf and the Atlantic. A high-resolution tropical model shows more than 4 inches of rain possible across the Lowcountry, South Georgia, and the western Carolinas. Savannah could see over 8 inches, while Charleston may pick up around 6 inches. The model may be overdoing some coastal totals, but the overall picture is becoming clearer.
Lowcountry and South Georgia See the Heaviest Totals
The highest rainfall amounts are focused along the Georgia and South Carolina coast. Savannah is forecast to receive around 8.16 inches, the highest total on the map.
Charleston could see about 6.09 inches of rain. Columbia is also in line for heavy rain, with totals near 4.80 inches, raising the risk of flooding in the Midlands.
Flood Risk Between Greenville and Columbia
A flood risk is highlighted across the region between Greenville and Columbia. Greenville is forecast to receive about 3.05 inches, while areas to the south and east may see more.
Moisture streaming north from the Gulf and Atlantic is expected to feed heavy rain into this corridor. Low-lying areas, creeks, and urban streets could see flooding.
Mountain Slopes Could See Enhanced Rain
The mountains are a key area to watch as persistent southeasterly winds push moisture up eastern and southern-facing slopes. This upslope effect could dramatically increase rainfall along the Blue Ridge Escarpment…