We see weather headlines year round from winter to severe weather in the summer, but there is a set hierarchy to them.

BUT PROGRESS The National Weather Service's Los Angeles page screams “Particularly Dangerous Situation (PDS)” in hot pink ... were first used to warn of tornado outbreaks in the Midwest.

The National Weather Service's Los Angeles page screams “Particularly Dangerous Situation (PDS)” in hot pink letters against a gray background.It's a rare warning aimed at seizing attention ...