county, california. massive wildfires are forcing thousands of people from their homes and have sent four injured firefighters to a burn center with second-degree burns. nick valenciall the details. >> houses are burning up. it's awful. >> two massive wildfires burning in northern california are spreading fast. threatening homes, property, and lives. the valley fire in lake county, 115 miles west of sacramento, spread from 50 acres to at least 40,000 by sunday. >> that is a very rapid rate of spread. very dangerous situation. just a reminder this is how the conditions are in california right now. with the temperatures and low humidity, four years of a drought, the conditions are very extreme. >> of the 1,000 fire personnel battling the valley fire flames, so far, four suffered burn injuries. they have been transported to the uc davis medical center where they're in stable condition. >> the firefighters, i'm sure they're emotion aldrained, physically drained after being stuck in a situation where your life is on the line doing your job. >> mandatory evacuations have been ordered for many communities in the fire zone. a shaken joyce got out just in time. >> we were s