As the deadly LA wildfires and other major emergencies have shown, alerts rely on a complicated chain of communication between first responders, government administrators, third-party companies and the public.

WASHINGTON (AP) — Human-caused climate change increased the likelihood and intensity of the hot, dry and windy conditions that fanned the flames of the recent devastating Southern California wildfires, a scientific study found.

As Southern California gets some much-needed rain, a new analysis suggests the conditions that led to January's wildfires were 35 per cent more likely because of human-fuelled climate change. And the more likely those fires become,