the 12,000 colima volcano is in a sparsely populated rural area. no evacuations from the nearby towns. this volcano has been one of mexico's most active in recent years. you can see some of the time elapse there, kind of cool. >> it is. >>> the recent storms did a number on a bay area landmark. it was actually swept out to sea. >> this is what the famous arch at tennessee beach along the marin county coastline used to look like. cbs 5 reporter allen martin took this picture a few years ago. and this is what's left. the arch crashed down 10 days ago likely the halt of time, geological forces and rain. take a look at that. >> that's a big difference. >> our earth is forever changing, isn't it? >> it is. lawrence you're tracking it, too. >> i am. we may get some rain back in the bay area. there's a chance we could see snow flurries around the bay area on thursday. got to get that moisture to come in here. today though it's all about the dense fog early on in some of the valleys, very thick. dense fog advisories in the valleys, 30s and 40s. this aftern