METAR weather code reference for BR (Mist)
Microscopic water droplets or wet hygroscopic particles suspended in the atmosphere, reducing visibility to between 5/8 of a mile and 6 miles. The abbreviation comes from the French word 'brume.' Affectionately known among pilots as 'baby rain,' BR is one of the most frequently reported obscurations and often accompanies low ceilings and stable air.
Here are common ways BR appears in real METAR observations:
BRRA BR-DZ BRThese METAR codes are commonly seen alongside BR or describe related weather phenomena:
A visible aggregate of microscopic water droplets suspended at the earth's surface that reduces visibility to less than 5/8 of a statute mile. Fog is one of the most common causes of IFR conditions and flight delays. When visibility improves above 5/8 mile, the observation changes from FG to BR (mist).
Fine dry particles of dust, salt, or other matter suspended in the atmosphere that give the sky a characteristic opalescent appearance. Unlike mist, haze particles are not water-based. Haze reduces visibility and is most common in warm, dry conditions. It can persist for days under stagnant high pressure systems.
Very fine, uniformly dispersed liquid precipitation with droplets smaller than 0.5 mm in diameter. Drizzle typically falls from stratus clouds and indicates stable atmospheric conditions with low ceilings. Freezing drizzle (FZDZ) is especially hazardous for aircraft.