If an international, national, state, or local disaster or emergency or other situation arises which makes substantial compliance with the Uniformed and Overseas Citizens Absentee Voting Act [42 U.S.C. § 1973ff et seq.] impossible or impracticable, as confirmed by the existence of armed conflict involving the armed forces of the United States or the mobilization of those forces, including national guard and reserve component members of this state, by the occurrence of a natural disaster or the existence of a state of emergency, civil unrest, war, or other exigency in a foreign country, or by an official declaration by the governor that a state of disaster or emergency exists, the secretary of state may prescribe special procedures or requirements as may be necessary to facilitate absentee voting by those absent uniformed services voters or overseas voters directly affected and who are eligible to vote in this state.