Heaviest rains came in yesterday. in the san bernardino mountains, some 700 people in forest falls forced to shelter in place until crews could remove boulders and mud blocking roads. watch as this massive mudslide approaches a fire station there sunday, firefighters scrambling for safety. and this is what it looks like from above today. in san diego, hilary taking out huge trees, as our matt rivers shows us. two to three inches of rain around san diego meant saturated ground, which meant decades-old trees like this one toppling over. this one hitting that house there. thankfully no injuries. now workers in the process of removing it. reporter: our l.a. station k abc broadcasting live when the unthinkable happened an earthquake. chief, i m really sorry to interrupt you right now. our studio is shaking right now, so not only are we dealing with a tropical storm, but it appears we are now dealing with an earthquake. reporter: the magnitude 5.1 tremor sending bottles flying off