Yosemite plans managed burnsYOSEMITE — Visitors to Yosemite this month might see some fires, but they likely are prescribed burns. Park fire managers are planning a series of fires in the park from mid-October into the winter.Shorter days and cooler temperatures allow optimal prescribed burning conditions to cut back on the undergrowth that, if left unchecked, can fuel massive wildfires.Smoke from the burns may be visible in Yosemite Valley, [...]