Stratocumulus Sheets - Weather Events
by FMI and KNMI
In the case of no orography, cloudiness in middle and high levels dominates with slight to moderate rain or drizzle
Parameter
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Description
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Precipitation
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- No precipitation or only slight drizzle/light snowfall.
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Temperature
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- Cloud-covered areas in winter generally warmer, in summer cooler than adjacent cloud-free areas.
- Reduced diurnal variation of temperature within cloudy areas.
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Wind (incl. gusts)
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Other relevant information
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- Aviation hazards: icing within the cloud and large wind shears on top of the cloud.
- The advection of stratocumulus over an area can either prevent the formation of fog or disperse it if it has already formed.
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26 September 2001/12.00 UTC - Meteosat IR image; weather events (green: rain and showers, blue: drizzle,
cyan: snow, red: thunderstorm, black: no precipitation)
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Example above shows an extensive Sc Sheet north of the Black Sea. No precipitation is observed within the cloud area.