Wyo. Stat. § 6-3-106: Failure to extinguish or contain fire outside; penalty.

A person is guilty of a misdemeanor punishable by a fine of not more than seven hundred fifty dollars ($750.00) if he, outside of normal agronomic or forestry practices, lights a fire outdoors and leaves the vicinity of the fire without extinguishing it or containing it so it does not spread or conditions are such that the fire is not reasonably likely to spread.