Conditions for a January LA firestorm have not existed before now, writes a meteorologist and climate journalist

An exceptional mix of environmental conditions has created an ongoing firestorm without known historical precedent across southern California this week.

The ingredients for these infernos in the Los Angeles area, near-hurricane strength winds and drought, foretell an emerging era of compound events – simultaneous types of historic weather conditions, happening at unusual times of the year, resulting in situations that overwhelm our ability to respond.