The MBTA will close down at 3:30 p.m. Friday because of the winter storm, according to an alert posted Thursday evening on the transit authority's winter advisory page.

"Due to a severe winter storm forecasted to hit the MBTA’s service area, the MBTA will suspend all modes of service effective at 3:30 p.m. on Friday, Feb. 8," the advisory states.

Regular MBTA service will operate "with significant delays" from the start of service Friday until the 3:30 p.m. cutoff, MBTA officials wrote.

"With severe winds and heavy snow forecasted for metropolitan Boston, this decision has been made with the safety of customers and employees being the MBTA's top priority at all times," according to the advisory. "The suspension of service will also allow MBTA and MBCR personnel to concentrate all of their efforts on making sure the transit system, from subway to bus to commuter rail, is up and running as soon as possible."

Jamaica Plain residents can visit MBTA.com to view all service impacts and other information and sign up here to receive T alerts by cell phone.