The National Weather Service has issued a wind advisory for the Charleston tri-county region until 7 p.m.

Winds are expected to be south, blowing at 15 to 25 mph with gusts around 40 mph. A wind advisory means that winds of at least 30 mph are expected.

The soaking delivered to the region this morning has saturated the soil and may make trees vulnerable to being uprooted by the wind, the Weather Service said. One person was killed and another hospitalized after two people crashed into a fallen tree in Berkeley County this morning.

Heavy rain prompted flash flood warnings during the morning rush hours and caused flooding on some low-lying streets, espeically in downtown Charleston.

In addition to looking out for falling trees, motorists should watch for gusty winds, which could make travel hazardous, especially on bridges and overpasses, the Weather Service said.

The morning started with a tornado wardning for parts of Charleston, Colleton and Beaufort counties, which was lifted after 8 a.m. Flash flood warnings were then issued, and several Charleston streets were flooded and closed to traffic.

“We’re at a slight risk for severe weather throughout the afternoon, so there’s a chance that we could see more warnings throughout the day,” meteorologist Emily Timte said.

A near 100 percent chance of showers is expected with possible thunderstorms in the afternoon.

Highs will be in the low 70s with lows in the upper 40s. Southeast winds will be from 15 to 20 mph with gusts up to 30 mph.

Wednesday: Partly cloudy in the morning with highs in the mid 60s and lows about 40. Southwest winds will be from 10 to 15 mph.

Thursday: Sunny in the morning then becoming partly cloudy. Highs will be in the upper 50s with lows in the upper 30s.