As wildfires burn longer and fiercer, doctors are trying to work out how today's smoke will affect tomorrow's health.
Weather models continue to show absolutely no rainfall until December 30th at the earliest.
Experts are concerned about how rainfall could spread toxic chemicals and destabilize hillsides thus threatening to damage the region's water supply.
A recent study puts forth a new factor for judging the flammability of forests: groundwater.
While it's widely acknowledged that forests can be useful for holding carbon, they release phenomenal amounts of greenhouse gases when they burn.