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Fair weather but change of weather expected within 24 hrs.
Usually bring precipitation within the next 9-18 hrs as front approaches.
Fair but changing weather.
Usually form ahead of storms with constant rain or snow within 6-12 hrs.
Can bring thunderstorms in late afternoon if the morning is warm and humid.
Sometimes (ie risk of) drizzle or rain.
Rain rarely occurs. Slow to clear.
Showers, steady or downpours of rain or snow.
Heavy rain or hail with strong winds. Thunderstorms and snow storms possible.
Severe weather including tornadoes.
Clouds caused by wave wind patterns caused by mountains.
Defined as when the visability near the Earth's surface is less than 1 km due to moisture in the air.