Of sierra snowfall expected to come as a trough works in. Heres a great view this morning of Golden Gate Bridge. And yes, temperatures in San Francisco 47. Have not reached that 50degree mark which we have been experiencing the past few mornings. Santa rosa 34. So almost near freezing. Some north bay cities are at freezing. Well have more coming up. A Vallejo Police officer shot and killed a suspect during what Officials Say was a violent struggle. Jessica flores has more. Reporter michelle, anne, thats right. Police are investigating exactly what happened. We do know that there was some type of pursuit before the officer shot and killed the man. Officers say it was self defense. The family disputes that. They are demanding answers. It happened last night 7 40 p. M. At marin and florida street. Police havent said what the initial call was. According to police the suspect ran off and when the officer caught up with the suspect there was a violent struggle and thats when the officer fire