The Weiser Knoll Fire in Wyoming, 13 miles southeast of Lander, has reached 95% containment as of August 17, 2026, according to InciWeb.
Firefighters successfully halted forward progress using control lines established with recent favorable weather, reducing threat to residents. The fire, reported August 9 at 2:15 p.m., burned 15,817 acres through grass and sagebrush under severe red flag conditions and strong winds.
Initial response involved U. S. Wildland Fire Service, local cooperators, and federal agencies. Additional crews and aviation resources were deployed as the fire escalated. The cause remains under investigation with no further details pending completion of the inquiry.