A107

CB

P6SM

Produced by a human forcaster

TAF radius

Lowest layer of clouds reported as being broken or overcast, or the vertical visibility into an obscuration like fog or haze

BKN clouds

OVC clouds

Used when a rapid and significant change, usually within an hour, is expected.

Used when a gradual change in the weather is expected over a period of no more than 2 hours.

Used for fluctuations of weather, expected to last for less than an hour