The OU has an article on their website regarding the halachos if a hurricane hits on Shabbos.
Remember, don’t be stupid! Your life comes first. If the conditions are severe, don’t go to shul! Stay indoors where it is safer.
Feif we have a couple of threads on this topic already!
Technically, it’s mutar to have a huricane on Shabbos, but a yirei shomayim should be machmir. 😉