Astronomically high spring tides and southerly winds could lead to minor coastal flooding Wednesday morning, according to the National Weather Service.

The National Weather Service in Taunton said in a weather statement Tuesday that large parts of southeastern Massachusetts could have pockets of minor coastal flooding with the Wednesday morning high tide. High tide is at 11:53 a.m. in Vineyard Haven.

The combination of strong southerly winds and building seas will combine with an astronomically high tide; there is a full moon Wednesday. Surges of half a foot to a foot are possible, the weather service said.

Blustery conditions were evident by late Tuesday afternoon.

The National Weather Service has also issued a hazardous weather outlook for most of Massachusetts, including Martha’s Vineyard, about a low to moderate risk for strong thunderstorms, particularly overnight Tuesday.

Heavy rain and strong winds are the primary threat, the weather service said, but an isolated tornado or small hail cannot be ruled out.

The weather could put on a damper on viewing opportunities for a lunar eclipse at dawn on Wednesday morning. The full moon will first enter the noticeable shadow of the Earth at 5:15 a.m.; one side of the full moon will start to darken. Totality will start close to sunrise, at 6:25 a.m., and mid-eclipse, when the moon is completely covered by the Earth’s shadow, is 6:55 a.m.