(a) If the banking commissioner determines that an emergency exists or is impending in all or part of this state, the banking commissioner by proclamation may authorize banks located in the affected area to close all or part of their offices or operations.
(b) If the banking commissioner determines that an emergency exists or is impending that affects or may affect one or more particular banks or a particular bank operation, but not banks located in the area generally, the banking commissioner may authorize the bank or banks affected to close their offices or a particular bank operation.

(c) A bank office or bank operation closed under this section may remain closed until the banking commissioner proclaims that the emergency has ended, or until an earlier time that the officers of the bank determine that the closed bank office or bank operation should reopen, except that the affected bank office or operation may remain closed for additional time reasonably required to reopen.