BAY SHORE - Rushing water from the overnight storm opened up a sinkhole near the Montauk Highway.
Witnesses say a small pothole opened up to a 10 X 12 sinkhole in a shopping center parking lot off East Main Street.
Fire marshals on the scene told workers and customers to leave the stores as they assessed the damage.
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Just up the street, Main Street in Islip was closed off in both directions after bulkheads fell and surrounding roads collapsed. The closure affected workers at Good Samaritan Hospital in West Islip, who say they were stuck for over three hours trying to get to work.
The hospital also fell victim to flooding on its first floor. Patients were moved to higher floors in the facility. Good Samaritan requested that ambulances bypass their emergency department due to difficulty with building access.
Islip Town Supervisor Tom Croci declared a state of emergency as floodwaters covered roadways. He asked residents to stay off the roads so emergency crews can handle the situation.