Visible satellite imagery is beautiful to look at; I love to see the shape and texture of the clouds and the pattern of the winds. You can only see it in daylight though and it doesn't tell you anything about temperatures. This afternoon's picture shows cloud free Ireland and North Sea, a feature of the subsidence beneath the elongated ridge of high pressure extending across the country. High cloud is spilling North and West from the continent; we were under this cirrus in Kent and Essex today. The depression is down over the Adriatic - a cold place for British warships in the winter during the former Yugoslavia crises.