So far U.S. Customs and Border Protection has announced the closure of its ports around New York City because of winter storm Juno. Both JKF airport (4701) and the port of New York/Newark (1001, 4601, 4670, and 4671) will have a snow day tomorrow.
Ports around Boston will be closed for at least two days in due to inclement weather. Customs facilities at Boston (0401) and at Logan Airport (0417) will be closed on January 27 and 28. The closure allows two additional days without penalty for the filing of entries and payment of duties and fees.