Noun
red flag warning (plural red flag warnings)
(meteorology, US) A warning issued by the United States National Weather Service that conditions are ideal for wildfires.
Santa Cruz County officials are urging evacuees staying outdoors or in tents to move into one of the available shelters to avoid heat exhaustion and possible thunderstorms amid a Red Flag Warning. Source: Internet
A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. Source: Internet
The National Weather Service has issued a Red Flag Warning through to the end of Monday, forecasting low humidity and gusts of wind up to 55 miles per hour through certain canyons. Source: Internet
A Red Flag Warning is in effect until 5 p.m. Monday. Source: Internet
The National Weather Service issued a Red Flag Warning that takes effect Sunday morning because of the dry, windy conditions that are expected. Source: Internet