"Liquid  moisture is on the way. Did you notice I did not say rain?  Today we  will be dry and cooler. Highs in the high 50s only. The next system  begins too march in over night. 
Rain will begin in SLO after midnight  and reach us some time Friday morning. Snow level will start out at  4000  feet . Then drop to 500 to 1000 feet Friday night. Needless to say  it will be cold and bring many areas some snow. Snow will fall in many  areas. Do the math 500 feet is not very high. This means even the  foothills of Santa Barbara . 
The models that we forecast off of are  all over the place with rain totals. One say 1/4 to 1/2 inch another  says 1 to 2 inches so we will average 1/2 to 1 inch coastal and 1 to 2  inch in the mountains . Many mountain area will receive 6 to 12 inches  of snow. Some areas will start out with rain and turn to snow Friday  night.
T
his system would be just a run of the mill storm , but  for the cold air. It has not been this cold since Jan 30, 2002.  The coldest core of weather is behind the front.  Http://www.wrh.noaa.
 
