DailySoCalNewsBrush fire erupts in hills above Corona, quickly grows to 50 acresLos Angeles TimesWater-dropping aircraft were hitting a brush fire that broke out in the hills above Corona on Friday, just as a multiday heat wave was starting to take hold. The fire, reported shortly before 11 a.m. near Silverado Canyon, had grown to 50 acres as of 11:25 a.m.