As much as 4 inches of snow could fall in parts of McHenry and Lake counties as a winter weather advisory remains in effect until early afternoon Friday.

The National Weather service said visibility could be sharply reduced in some areas and driving could be hazardous from “slushy snow accumulations.”

Generally, areas north of Interstate 80 will be snow while areas to the south will get rain, the weather service said. Most of the snow will fall between 8 a.m. and 1 p.m., it said.

“The rain and snow will abate across the area through the afternoon, though some occasional drizzle can be expected into tonight,” the weather service said.

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A teenager was injured in a West Englewood shooting Thursday evening, police said.

The boy, 17, was on a sidewalk in the 7200 block of South Laflin Avenue around 5:30 p.m. when someone fired shots, according to Chicago police.

The teen was taken to Little Company of Mary Hospital and then transferred to Advocate Christ Hospital, where he was listed in fair condition with gunshot wounds to the chest and left leg.

No one is in custody and detectives are investigating.

No other details were immediately available.

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A Metra train on the Union Pacific Northwest Line hit a car Thursday afternoon in Arlington Heights, according to Metra.

The Arlington Heights Police Department said in a tweet to avoid the area near Northwest Highway and Arlington Heights Road. Police advised to use Euclid or Central instead to cross the train tracks.

Metra said extensive delays were expected following the crash.

Metra Alert UP-NW - Train #631, scheduled to arrive Crystal Lake at 6:00 PM - stopped near Arlington Heights due to striking a vehicle. Extensive delays anticipated

No other details were released.

A police officer and an armed robbery suspect were shot in west suburban Lombard Thursday afternoon, police said.

Lombard police did not provide any details on the condition of the officer or the suspect, and said the investigation was ongoing.

The shooting happened in the area of Ann Street between Lincoln and Main streets.

Check back for updates.