Warm Sector is a dreadful term that has wrecked many many winters since 1988.
We are now in the modern winter..its time to embrace new terms
Thanks Ian, sorry, Steve...
A little correction is required, though. In a 'modern winter' we don't get warm sectors, we are in an eternal slug of mild south-westerlies. Maybe interspersed spasmodically by a brief ice-lolly of Pm air.....
Location: South Cambridgeshire
130 metres ASL
52.0N 0.1E