chris clackum, nbc news. >>> christina loren is here with a look at our forecast. >> we are into this wet, stormy pattern, and it is not letting up any time soon. this is the first official day of spring, but it won't feel like it. we'll be warm up for thunderstorms to pop up throughout the day. we are already noticing lightning just offshore in the san francisco area. so once it starts to heat up this afternoon i think we'll see more of that activity, thunderstorms developing, and rolling onshore throughout the day. so we'll watch those for you. of course, we saw some severe thunderstorms on friday. and today it is possible to see more of the same. so we'll be watching this very closely throughout the day. let me show you what's happening and what's creating this very unstable atmosphere. we have a low pressure system just sitting offshore. you can see the clouds and that moisture wrapping around that system. it is actually spinning up some showers in the bay area. and it is staying put. it is staying stationary. so as we head throughout the next few hours it will be enough moisture