At least three people were rescued from vehicles stranded in flash floods in Harford County Thursday night, fire officials said.
No injuries were reported. In one incident in Bel Air, responders brought a life boat to save a person from a car, which was stranded in floodwaters up to its headlights at Marywood Drive and St. Francis Road.
Harford County Fire & EMS asked people in the Bel Air, Hickory and Forest Hill areas to stay off the roadways, some of which -- including parts of the Bel Air Bypass near Rocks Spring -- were closed because of the flooding. They also asked residents to refrain from swimming, walking and horse play in floodwater: "We don't need the extra work, we have enough already."
Widespread downpours and thunderstorms were forecast to bring as much as 2 inches of rain Thursday night.
Northeastern Harford County is under a flash flood warning as 2-4 inches of rain fell on the area and creeks continue to rise. A flash flood watch is in effect through midnight for the entire Baltimore region, according to the National Weather Service.
The rain is forecast to be the product of a cold front approaching the region Thursday. It is meeting a mass of extremely moist air over the region, with dew points surging into the mid-70s Thursday morning. That is a rare level of intense humidity.
Rain is forecast to continue overnight before skies clear Friday.
Sunny skies and relatively cool temperatures are forecast for the weekend, with highs in the mid-80s.
About an inch and a half of rain had fallen so far this month at BWI before Thursday, while about 3.3 inches is normal for the full month of August.
The rain gauge at BWI for the year to date reads about 35 inches, nine inches more than normal.