Your nonprofit maybe has an emergency succession plan for the exec (you know, what happens if the exec gets hit by a bus), no?
Let's remind ourselves that one of the tests for evaluating performance of the fiduciary duty of care is prudence, often framed by the question, what would any person, an owner, do facing a similar situation or circumstance?
Today, many individuals on the East Coast are preparing their homes and businesses for a hurricane. Is it fair to ask all those boards of East Coast nonprofits, if someone has checked-in with the exec to learn how preparations are going? Would this not be the prudent action of an "owner"? Of course the prudent board would have prepared policies relating to this situation quite a while ago (remember post-9/11) so maybe the board chair's checking-in to learn that policies have been implemented would be good enough.
Either way, are you the board chair and/or member of a noprofit and confident that your nonprofit is prepared for what's coming?