WHITEHORSE, YUKON — Yukon’s government says sustained storms over the last two weeks have caused a spike in lightning-triggered wildfires, resulting in poor air quality and fire evacuation alerts. The territory’s Wildland Fire Management agency says in a statement that Yukon responded to a number of new blazes triggered by lightning over the weekend, with 86 new wildfires reported since thunderstorms began developing on June 19. The territory says there are 78 active fires in Yukon, and all but two of those blazes are in the Dawson and Mayo fire districts. The statement says crews have managed to stop a number of fires that burned close to communities such as Dawson, Mayo, Carmacks and Watson Lake, and evacuation alerts remain in place for parts of central Yukon, including Mayo and Stewart Crossing.