BAY SHORE - A mandatory evacuation is under way on Fire Island as Hurricane Irene barrels toward Long Island.

County Executive Steve Levy (R-Suffolk) and town officials held a press conference this afternoon about the evacuation, which went into effect at 3 p.m.

The last ferry will leave Fire Island to Bay Shore at 4:40 p.m. tomorrow. Levy stressed that with thousands of residents, it is imperative that everyone leave as soon as possible.

Police say they will be going door-to-door on Fire Island starting tomorrow morning, urging everyone to evacuate. For those who wish to stay, officials will take their names, phone numbers and next-of-kin information, and then check on them again after the storm hits.

Levy says officials have made the decision that a number of low-lying areas on the coast, mostly the southern part of Suffolk County and some northern areas, will have a mandatory evacuation as early as 8 a.m. tomorrow. Officials have not determined exactly what areas will be evacuated, but it will be decided on a town-by-town basis.

A number of shelters across Suffolk County will also be open, including Riverhead High School, Robert Frost Middle School in Deer Park, Brentwood High School in Brentwood, Longwood Senior High School, Easthampton High School, Walt Whitman High School, North Babylon High School, Hampton Bays High School, Sachem East High School and Riverhead Middle School.

Shelters that are pet-friendly in Suffolk County include the Brentwood Recreation Shelter and Suffolk County Community College at the Riverhead campus. For a full list of the Brookhaven Town mandatory and voluntary evacuations, click here.

Suffolk residents who need help with non-life threatening emergencies can call 631-852-2677. County Exec. Levy calls for voluntary evacuation of Fire IslandGov. Cuomo declares state of emergency in NYCounty Exec. Mangano activates Nassau's coastal storm plan

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