Cirrus and Cirrostratus over SW

[xmetman]

I'm not quite sure where all the cirrus and the cirrostratus that's currently lying down the spine of the SW peninsula this morning originated but it does make for a good picture.

This is it from space.

And here's the analysis

I suppose it may have been the remnants of an old trough that pushed south in the flow from further north.

[xmetman]

According to the nearby LCBR at Exeter airport that's 5 oktas 18,000 and 5 oktas 22,000 feet in their 0800 UTC AWS observation.

[Martin Rowley [West Moors/East Dorset]]

... I think you've got it Bruce: at 300 mbar - a sharp (and notably diffluent) trough at that level appears to tie in nicely with the observed cloud structure - on latest animation the actual shape of the trough is well marked. We've got a lot of embedded ex-COTRA here too.

Martin.