Archbishop Perez has issued guidance on the winter storm and the Sunday Mass obligation. You can read the Archbishop’s full statement here:
https://catholicphilly.com/2026/01/archbishop-perezs-messages/archbishop-perez-issues-guidance-on-winter-storm-and-sunday-mass-obligation/

In part it reads:

“While the obligation to attend Holy Mass on Sunday remains, if the weather impedes people from attending Mass safely, especially the elderly, then they should remain at home. A good alternative is to attend the Saturday evening Anticipated Mass ahead of the storm.”

Therefore, you are strongly encouraged to attend the 5:15pm Vigil Mass on Saturday at Presentation BVM Church before the storm starts.