SAN FRANCISCO (AP) — Cooler, wet weather helped firefighters make progress on a huge Northern California wildfire that destroyed nearly three-dozen structures, forced the evacuation of more than 2,000 people and forced the cancellation of a sporting event because of the smoke. [...] earlier in the day, poor air quality forced a last-minute cancellation of two popular Ironman events in nearby Lake Tahoe, disappointing about 3,000 athletes who had signed up for the competition, Ironman operations manager Keats McGonigal said. According to preliminary figures released Sunday, the fire destroyed 10 homes and 22 outbuildings in the White Meadows area of Pollock Pines.