What is a 'red flag warning'?

(NEXSTAR) -- You may have seen a weather alert in your area or elsewhere that you didn't recognize recently, especially leading into the summer months. Do you know what a "red flag warning" means?RFWs are issued when there's a heightened chance of fires in an area. La Niña won’t quit: How it impacts hurricane seasonWhile different regions define RFWs differently, the National Weather Service outlines some basics:warm temperaturesvery low humiditiesstronger winds are expected to comb