There probably aren't any such provisions, at least not in the mortgage itself.  Any insurance coverage would be in a separate document, the way it's usually done.

If you have the usual sort of homeowner's insurance, that only pays for the cost of repairing the damage to the property, and what you might owe on one or more mortgages has nothing to do with it.  Your homeowners' insurance doesn't cover the entire cost of the property, since the land can't be destroyed (at least not by any event that the insurance wll cover).  The only way you might be able to get out from under the mortgage is if you have some form of mortgage insurance that covers hurricane damage.