Note how East winds are usually at night or during the rain:

Los Angeles Airport (LAX) 7-Day National Weather Service Records:
http://www.wrh.noaa.gov/mesowest/getobext.php?wfo=lox&sid=KLAX&num=168&raw=0&dbn=m

tce-Los-Angeles-snow, rst.gsfc.nasa.gov
Coastal sea breeze
sea-land-breeze