Southern California is bracing for an "unprecedented" third Particularly Dangerous Situation warning in a month, as extreme Santa Ana winds increase fire danger.

Monday's red-flag warning is a PDS, which stands for "particularly dangerous situation." But what does that mean? An NWS ...

Millions of Southern Californians were on edge as winds began picking up during a final round of dangerous fire weather ...

Their predictions and warnings most ... the NWS issued a rare "particularly dangerous situation alert." The advisory is often used in the lead-up to hurricanes and tornadoes.

A tornado watch was posted for 24 counties in east Texas, with the National Weather Service warning: “This is a particularly ...

As if they aren't already facing enough, firefighters in California also could encounter fire tornadoes ... conditions have created a "particularly dangerous situation" in which any new ...