Due to boat cancellations Sunday morning, the start of the vax bus clinic is postponed until noon.

People with morning appointments can come anytime between noon and 5 p.m. to be vaccinated.

The bus will be parked at the Martha’s Vineyard Regional High School. Register for an appointment at home.color.com/vaccine/register.

Free vaccine shots for children ages five and up, and boosters for those 12 and up, will be available. Doses made by Pfizer, Moderna and Johnson & Johnson will be administered.

Flu shots will also be available.

The vaccination bus is made possible by the Martha’s Vineyard boards of health, Island Health Care, Martha’s Vineyard Public Schools, the Martha’s Vineyard Hospital and Communication Ambassador Partnership.