Islip Town facilities suffered water damage from Friday's torrential rain and wind, officials said Saturday.
Office equipment from the departments of planning and information technology, and the mailroom had to be moved out of the basement of Town Hall.
"Luckily, the quick actions of our employees prevented any irreparable damage, and we were able to keep our servers operational," Deputy Supervisor Trish Bergin Weichbrodt said in statement. "Most services to our residents should continue uninterrupted, although we are still taking stock of the damage."
The storms also caused flooding at Town Hall West at 401 Main St., the West Islip Recreation Center, the East Islip light vehicle repair shop and the Sayville mechanic facility and highway yard, officials said. The status of those facilities was not immediately known.
Because of heavy rainfall, health officials in Nassau County closed 19 beaches to bathing until possibly Sunday, while Suffolk County officials advise no bathing at 67 beaches because storm runoff could raise bacterial levels in the water.
The advisory was expected to be lifted Sunday at 6 a.m., officials said.
Long Island Power Authority reported 4,000 outages caused by the storm, and said Saturday that service has been fully restored.
The twister touched down in Great River on Friday afternoon, staying on the ground for about eight minutes and tossing trees on top of power lines, homes and cars. The tornado covered 41/2 miles, also going through Connetquot River State Park, Bohemia and Ronkonkoma. The low-grade tornado carried 65 to 85 mph winds, the National Weather Service said.
Flash floods were also reported in several areas as 1 to 2 inches of rain fell in eastern Nassau and western Suffolk.
Islip Town crews were out Friday night with pump-out tankers assessing conditions to alleviate excessive flooding and clearing roads in Sayville, Oakdale, Bohemia, West Islip and Ronkonkoma. LIPA workers were also cutting and lifting tree limbs off power lines.