There is a wind and frost advisory in effect for the Santa Clarita Valley. The wind advisory is in effect until 6:00 PM this afternoon and the frost advisory will remain in effect from midnight tonight to 9:00 AM Saturday morning. Ares of north winds 20 to 30 MPH with local gusts to 45 MPH will continue this afternoon. Temperatures are expected to drop quickly tonight and many areas will likely experience temperatures from 29 to 32 degrees for at least 2 to 4 hours between midnight and mid-morning Saturday.