The National Weather Service put out warnings about flooding north of Charleston on Monday, and they were right.

The flooding was so bad in the Northwoods Mall parking lot in North Charleston that at least one person was trapped in a car and had to call for help around 6:30 p.m., according to Lamar Watkins with Charleston County Rescue.

Rising waters trapped another person in a car somewhere on Highway 78, he said.

A man was wading in water up to his knees on Old Trolley Road near Dorchester Road shortly after 6 p.m., according to a photo snapped by Jeff Schreiber.

Significant flooding was also reported in Goose Creek and Moncks Corner.

The flooding was caused by heavy rain north of Charleston. For example, the National Weather Service reported 6.53 inches of rain near Goose Creek in three hours Monday.

Downtown Charleston got a heavy downpour in the early afternoon but not enough to flood the streets.