Update: All planned service changes this weekend (none of which, as noted below, directly affected service at any local station) have been cancelled because of the storm. As of now (11:05 a.m. Saturday) MTA Info is reporting good service on all lines, apart from cancellations related to Hurricane Sandy damage in lower Manhattan and the Rockaways.
Our good luck returns for this weekend and Valentine’s Day week, as there are no planned cancellations or diversions that will affect service at any local stations, apart from there being no 3 trains in either direction from 12:15 a.m. to 5:00 a.m. Tuesday through Friday. The 2 trains will be running at these times, so there will be service at Clark Street and on the 2/3 platform at Borough Hall. There are service changes on the A/C line during the weekend that will affect travel uptown in Manhattan, and on the N (which replaces the R late at night for service to and from Court Street) during the following week that affect travel from Manhattan to Brooklyn (though there will be service in both directions at Court Street). For details consult MTA Info or The Weekender.