(March 13, 2018: Update 11:29 a.m.) Town manager Libby Gibson has declared a “snow emergency” for the town, as at least eight to 12 inches of heavy, wet snow are expected to fall and heavy winds buffet the island through Tuesday afternoon.

As part of the emergency declaration, a parking ban has been declared for roadways where at least one sign prohibits parking for the purpose of facilitating snow removal. The parking ban is in effect from 12:01 a.m.-11:59 p.m. Tuesday. 

Nantucket public schools are closed, and all Steamship Authority and Hy-line Cruises boat service on the day is canceled.

For a continuously-updated list of closures, delays and cancellations, click here.

At 11:30 a.m., National Grid was reporting 50 Nantucket customers along the south shore without power, down from about 800 in Madaket and Eel Point earlier in the morning.

The National Weather Service has issued winter-storm and high-wind warnings for Nantucket  through this evening.

According to the NWS, the winter-storm warning is in effect from 11 p.m. Monday through 8 p.m. Tuesday.

"Some mixing is possible later in the day, but overall, anticipate snow accumulations of six to eight inches. Plan on difficult travel conditions. Damage to trees and power lines is possible with the strong wind gusts. Be prepared for significant reduction in visibility at times."

The high-wind warning is in effect from 2 a.m.-8 p.m. Tuesday for eastern coastal Massachusetts, including Nantucket. North winds of 30 to 40 mph with gusts up to 65 mph are expected around Tuesday morning. 

"Damage to trees, power lines and property are possible with winds of this magnitude, especially over areas of southeast Massachusetts where there is the potential for a more heavy, clingy wet snow. Power outages are possible. Driving could also be difficult, especially for high-profile vehicles."

A coastal-flood warning is also in effect for Nantucket from 8 a.m. until noon Tuesday.

The Nantucket Police Department will attempt to contact owners of vehicles in violation of the parking ban in an attempt to have them move their vehicles. Vehicles not removed by midnight Tuesday may be towed at the owner’s expense upon order of the Police Department, Lt. Angus MacVicar said.

Parking is prohibited on Academy Lane, Ash Lane, Ash Street, Candle Street, Commercial Street, Fayette Street, High Street, India Street from Gardner to Centre Street, Liberty Street, Lowell Place, New Whale Street to Commercial Wharf, Oak Street to Federal Street, Quince Street to Centre Street, Rose Lane, Salem Street, Traders Lane, West York Lane, Wesco Place, Whalers Lane, Winter Street and Walnut Street.

Emergency management officials anticipate higher than normal flood tides Tuesday around 10 a.m. Significant flooding is expected on Washington, Francis, Easy and Lower Broad streets and the Brant Point area. Motorist are reminded that the flood waters are salt water and should avoid driving through the flooded areas. Residents with homes in low-lying areas affected by flooding from the harbor should consider seeking alternate shelter for Monday night through the Tuesday high tide, which is expected to be at 10:48 p.m. Tuesday, MacVicar said.

Emergency management officials do not anticipate opening the emergency shelter at Nantucket High School at this time, he added.

Visit www.ack.net for updated information, including additional delays and cancellations.

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