Wyo. Stat. § 16-4-114: Emergency expenditures.

If the governing body determines an emergency exists and the expenditure of money in excess of the general fund budget is necessary, it may make the expenditures from revenues available under W.S. 16-4-105(a)(ii) as reasonably necessary to meet the emergency. Notice of the declaration of emergency shall be published in a newspaper of general circulation in the municipality.