the.com/warm front
Weather's polite way of saying things are about to get humid and dramatic.
means The leading edge of a mass of warmer air advancing to push out colder air, usually bringing gradual cloud buildup and steady rain.
from A 20th-century coinage from meteorology — specifically the Norwegian 'polar front' theory developed by Vilhelm Bjerknes and colleagues around World War I, which borrowed military language (fronts, battling air masses) to describe atmospheric collisions. 'Warm front' simply marks where the warmer army of air is winning ground.
- the slide
- warm air glides up over cold air, not through it
- the pace
- moves slower than cold fronts, so rain lingers longer
- the symbol
- drawn as red semicircles pointing where it's headed
- the mood
- brings steady drizzle, not the cold front's dramatic thunderstorms