Police in Suffolk and Nassau counties are investigating a series of crashes -- one fatal and another ending in a driving while intoxicated arrest -- that occurred after an evening of heavy storms.

About 6:55 p.m. Friday, Suffolk County police were called to North County Road in Mount Sinai. Miller Place resident Reinhold Schierwagen, 64, was driving a 2002 Ford F150 pickup eastbound when his truck struck a guardrail and shrubs, coming to rest in the front yard of a house, police said.

The Mount Sinai Fire Department took Schierwagen to Stony Brook University Hospital, where he was pronounced dead, police said.

Then, at 9:15 p.m., Suffolk police received a report of an overturned 1998 Ford Explorer on Nichols Road in Centereach. Stony Brook University student Miguel Roncal, 20, lost control of his vehicle, which then hit the median.

Roncal and his passengers, four other Stony Brook students, were also taken to Stony Brook University Hospital, police said. Roncal was listed in stable condition; and the passengers were treated for minor injuries.

In a third crash, a Corona, Queens, man was charged with driving while intoxicated after he drove into an auto repair shop in Dix Hills at 4:10 a.m. Saturday.

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The driver, Darwin Hernandez, 29, was trying to turn left into a parking lot on Jericho Turnpike, when his 2002 Ford struck an unmarked police car and went into the repair shop, striking three vehicles inside, police said.

Both Hernandez and the detective in the police car were taken to Huntington Hospital with minor injuries. Hernandez was arraigned Saturday at First District Court in Central Islip and released on $10,000 bail.

In West Hills, one person was airlifted to Stony Brook University Hospital with injuries that were not considered life-threatening at 5:27 a.m. after a crash on Colonial Road. Suffolk police said they did not have more information on the crash.

The crashes occurred after bands of severe thunderstorms moved through the region Friday evening, with some areas getting as much as 1.5 inches of rain.