US: Adverse weather forecast across southeastern regions through at least early Nov. 8

Severe weather is forecast across parts of the southeastern US through at least early Nov. 8. A weak low-pressure system is expected to draw tropical moisture into the region. leading to heavy rainfall and possible flooding in the affected area. Rainfall totals of around 20-30 cm (8-12 inches) are possible in parts of central and eastern Georgia and western South Carolina and 10-20 cm (4-8 inches) across much of the rest of the affected area Nov. 6-7.

As of early Nov. 6, the US National Weather Service (NWS) issued flood watches for parts of eastern Georgia and western South Carolina. Authorities will likely issue new alerts as weather conditions change over the coming hours and days.

The NWS's Weather Prediction Center has forecast a moderate risk of excessive rainfall (the second-highest level on a four-tier scale) for parts of central and eastern Georgia and western South Carolina and a slight risk of excessive rainfall across the rest of the affected area Nov. 6-7. There is a further slight risk of excessive rainfall for parts of central and eastern Georgia and central and western South Carolina Nov. 7-8.

Sustained heavy rainfall could trigger flooding in low-lying communities near rivers, streams, and creeks. Urban flooding is also possible in developed areas with easily overwhelmed stormwater drainage systems. Sites located downstream from large reservoirs or rivers may be subject to flash flooding after relatively short periods of intense rainfall. Landslides are possible in hilly or mountainous areas, especially where heavy rain has saturated the soil.

Authorities could issue mandatory evacuation orders for flood-prone communities over the coming days. Disruptions to electricity and telecommunications services are likely where significant flooding or landslides impact utility networks.

The severe weather will probably contribute to transport disruptions throughout the region. Floodwaters and debris flows will likely render some bridges, rail networks, or roadways impassable, impacting overland travel in and around affected areas. Ponding on road surfaces will cause hazardous driving conditions on regional highways. Authorities will probably temporarily close low-lying routes that become inundated by floodwaters.

Severe weather will likely cause flight delays and cancellations at airports across the affected region. Flooding will probably block regional rail lines; freight and passenger train delays and cancellations are probable in areas with heavy rainfall and potential track inundation.

Localized business disruptions will likely occur in flood- or tornado-hit areas; some businesses might not operate at full capacity because of damage to facilities, possible evacuations, and employees' inability to reach work sites.