A prolonged period of rain in Marin County turned more consequential Tuesday with flooded roads, fierce wind, closed schools and fallen power lines.

The storm dropped about 5 inches of rain on parts of the county over a 24-hour period through mid-afternoon Tuesday, said Brian Garcia, a meteorologist with the National Weather Service.

The agency issued a severe thunderstorm warning from Dillon Beach to Stinson Beach and reported gusts of 70 mph. The Shoreline Unified School District closed its campuses.

The weather service said the storm moved slower than forecasters thought it would.

“It’s dumped more rain in the area, especially in the North Bay, than we anticipated,” Garcia said. “It’s a much stronger tropical moisture tap than we expected.”

He said the rainfall totals from Monday afternoon to Tuesday afternoon included 5.49 inches in Woodacre, 4.98 inches on Mount Tamalpais, 4.71 inches in San Rafael, 3.12 inches in Mill Valley and 2.92 inches in central Novato.

That followed a period from Saturday to Monday when Mount Tamalpais received about 11 inches and Woodacre got about 7 inches.

The events Tuesday included a water rescue in western Marin, where a truck was immersed to its hood in flooding about 12:45 p.m. on Platform Bridge Road about a mile north of Sir Francis Drake Boulevard, said Marimar Ochoa, a spokesperson for the Marin County Fire Department. The two occupants were trapped but uninjured, and a rescue team with a boat arrived in about 15 minutes to get them out, Ochoa said.

Elsewhere on the roads, flooding closed Highway 1 in both directions between Point Reyes Station and Olema, and the California Highway Patrol received reports of several vehicles stuck in the mud in the area.

The CHP also received reports of flooding at Highway 1 and Highway 101 in Mill Valley and on southbound Highway 101 at the South Novato Boulevard onramp. In San Rafael, a vehicle hit water and crashed into a fence along Interstate 580 near the Francisco Boulevard East offramp, the CHP said. No injuries were reported.

Also in San Rafael, the heavy rain dislodged sewer covers in the area of Manuel T. Freitas Parkway and Las Gallinas Avenue in Terra Linda, police Sgt. Justin Graham. He said an officer tried to reseat a cover and it “popped back open.”

Police called a public works crew for repairs. The incident prompted no street closures, Graham said.

Storm-related power outages Tuesday included about 850 meters in the Gerstle Park area of San Rafael and about 200 meters in the area of Muir Beach, Muir Woods and Mount Tamalpais, Pacific Gas & Electric Co. reported.

Smaller outages occurred in the Inverness area, Larkspur, Sleepy Hollow, western Fairfax and elsewhere, the utility said.

The forecast for Wednesday includes clear and cold weather in Marin. A less potent storm is expected to deliver more rain Thursday and Friday, followed by a clear weekend and a potential return to rain by the middle of next week, according to the National Weather Service.