Orographical Effects on Frontal Cloud - Weather Events

Front Delay

Parameter	Description
Precipitation	Little precipitation No convective weather events
Temperature	Decreases according to the Cold Front
Wind (incl. gusts)	Usually weak in front, a bit more within frontal cloud band
Other relevant information	Front Delay normally results in rather weak weather activity

	06 May 2003/06.00 UTC - Meteosat IR image; weather events (green: rain and showers, blue: drizzle, cyan: snow, red: thunderstorm, black: no precipitation)

Decoupling of clouds at different heights

Parameter	Description
Precipitation	Precipitation sometimes occurs in the low level cloudiness High level cloudiness produces little precipitation
Temperature	Decreases according to the Cold Front
Wind (incl. gusts)	Surface winds weak
Other relevant information	High cloudiness followed by low cloudiness The Cold Front is usually not very weather active

	07 January 2004/00.00 UTC - Meteosat IR image; weather events (green: rain and showers, blue: drizzle, cyan: snow, red: thunderstorm, black: no precipitation)