Complex sentence: During the June Gloom, cooler air can be pushed out into the desert from Southern California; in Santa Ana wind events, hot air from the desert blows out into the Los Angeles basin and other coastal areas.
Split into simpler sentences: During the June Gloom, cooler air can be pushed out into the desert from Southern California. In Santa Ana wind events, hot air from the desert blows out into the Los Angeles basin and other coastal areas.