Note that Ficus hedges are prone to damage by frost and if you have them you might like to consider protecting them e.g. covers over and long burning candles under.
"* IMPACTS... MAJOR TRAVEL PROBLEMS... DELAYS AND CLOSURES POSSIBLE IN THE MOUNTAINS DUE TO SNOW AND ICE. MAJOR TRAVEL CORRIDORS WILL BE IMPACTED INCLUDING I-15 IN THE CAJON PASS AND I-8 THROUGH THE SAN DIEGO COUNTY MOUNTAINS. SNOW ALSO POSSIBLE ON I-10 THROUGH THE SAN GORGONIO PASS. STATE AND COUNTY ROADS IN THE MOUNTAINS AND FOOTHILLS WILL BE SNOW AND ICE COVERED"