Beaufort County is under a flood watch. How much rain is predicted to fall Monday?

A cold front creeping into the Southeast was expected to bring heavy and rapid rainfall to the Lowcountry on Monday. The incoming deluge triggered a flood watch for Beaufort County.

The National Weather Service of Charleston said a large area of showers and thunderstorms will develop along a southward-moving cold front, posing a risk for flash flooding along the coast. Strong and severe thunderstorms are also possible, the service added.

Between noon and 9 p.m. Monday, Beaufort County could amass up to 3 inches of rain. However, the service said locally higher amounts up to 6 inches are possible. Hourly rainfall rates could exceed 3 inches per hour.

With torrential downpours, flash flooding in the low-lying area is possible. The impact will coincide with a predicted 8-foot high tide shortly after 6 p.m. in Beaufort County, according to US Harbors’ website.

“We’ve all seen, and in some cases lived through, what extreme downpours can do at high tide along our coast,” said Frank Strait, the state’s severe weather liaison.

The NWS urged people to move parked cars out of flood-prone areas and not drive into flood waters.

Possible severe weather between noon and 9 p.m. Monday could whip up damaging winds with gusts up to 58 mph, the service said. Strong winds can cause to damage trees and power lines. Frequent cloud-to-ground lightning is also possible.

Strait said more showers and thunderstorms will affect the Lowcountry on Tuesday as the front “fizzles out.” However, they aren’t expected to be “as intense or as widespread,” he added, meaning the risk for flash flooding will be lower.