. >>> angel island, the marin headlands, even the hayward fault. we are surrounded by some of the world's most epic geology, but knowing about them and getting to them may seem challenging. >> well, now geologists have created a new virtual field guide to help. abc7 news reporter liz kreutz has the story. >> this is what it looked like off the beach during "jurassic park." >> this foggy monday morning we arrived at the marin headlands for a field trip with christy row, a geologist who grew up in mill valley. >> i've always really been obsessed with the geology of this area. >> she is now one of five geologists who have created streetcar 2 subduction for people to explore the rocks and faults that surround us. >> it's a collaboration between the american geo physical you know and google. and we're taking some classical guides around the area and we transformed them for the digital age. >> this new digital experience is an update to a guide book from the '70s and '80s. it uses google earth technology, videos and photographs to explain the geology of

then marin headlands, for instance, take trip. different sites. i'll click marin headlands. a video pops up explaining the location that you're at. now, the san francisco bay area is the first location these geologists have mapped out. they're working on other cities that will come out in the coming years. >> what a clever idea. a great way for us to see a little more about our national environment. >> absolutely. >>> we want to finding out how much rain we're getting coming our way. >> speaking of natural environment, drew tuma is here wih the forecast. >> the rain wi the rai tomorrow night and only in certain spautots. what will be widespread tomorrow morning is dense fog. we'll see the fog thicken after midnight. use low beams, add extra time and distance to the car in front of you for the morning commute tomorrow. we'll have temperatures settling in the mid-40s for a lot of neighborhoods first thing in the morning. to break down the day for you, there's that dense fog, first thing very slow to get out of here. we're left over

of patchy over san francisco right now you can take look at the golden gate bridge there the marin headlands but a lot of us still affected by low visiility into us. we do see dense fog advisories extended by the nional weather servicnow out along the coastline in san francisco for much of marine sonoma napa and solano counes on out into t delta and eventually the central valley. so this a pretty clear to see right here all that cloud cover searching on to the pacific. that's what's been bringing usare persistent infall than just the general cloudy and gray trend that we've had lately a lot of the heaviest of rain is actuallyentered now on the north coast up toward oregon and the very northern part of california here in the bay area we're right at the southern tier where this rain is making its way in directly to the east. so we haven't really seen it descendinginto the bay ar just yet although you n expect that later today into the aernoon snowfall up in the sierra at the highest of slopes we are seeinga mix of rain and snow unfortunately mehow pretty high elevations this morning that is wa

>>and a couple of those hills in the marin headlands visibility in novato santa rosa, san francisco, mountain view and san jose as well as napa all down below a mile right now in these areas visibility is causing you some issues and you should slow it down. >>by the afternoon ahead we do see fog lifting low cloud cover staying with us for much of the day and a couple of their way through those clouds really not a whole lot of sunshine on your friday, further south the clearer it becomes the further north the rainier becomes you head north to santa rosa and there's a few showers right around healdsburg at this moment, nothing too heavy that rainfall is staying north of the bay area for this morning 50's for your current temperatures alameda hayward oakland berkeley all in the mid 50's right now fairfield and pittsburgh 54 degrees for your current nuers and later on today not a whole lot different daytime highs will rise out of the mid to upper 50's and to arrange of upper 50's and low 60's and a few showers later on today which i'll talk more about the timing of those still to come ro

. >>> angel island, the marin headlands, even the hayward fault.we are surrounded by the most fascinating geological fem phenomen phenomenons. >> a field guide to explore our local earth landmarks. it's pretty cool and it's called streetcar 2 seduction. it digitizes a previous berkeley guide book used in the '70s and '80s. >> we are concerned about the motion of faults or landslides or other phenomenon and it's the geology that are controlling that we're hoping to reveal and make more accessible through the field guide. >> you can explore for yourself. all you need is google chrome or google earth extension. we posted on our website at abc7news.com. >>> new at 6:00, help for renters. the move one bay area city made to stop huge rent increases. >>> a new spying scandal. the apology from the new england patriots over something one of their employees recorded. >>> instagram is rolling out a new way to shop. celine dion shows us how it works. >> a live look outside right now. people heading out and about this morning. you know when you go to ross for a