Today the 15th of March is the Ides of March in the Roman calendar, and it’s on this day in 44 BC that Julius Caesar was assassinated. On the 15th March 2017 though, the stratus that has plagued the coastal areas around the south and west has been very reluctant to shift today. Its cleared though in mid-Devon this afternoon, but it’s still clinging to the south coast from Cornwall through to Dorset (fig 1). It’s not often that it’s warmer at Dunkeswell and Liscombe than it is at Exeter airport, but it is this afternoon. St Athan is in fog and cold, with a temperature of only 7.6°C at 14 UTC, whilst on the other side of the Bristol Channel in North Devon, temperatures are close to 15°C (fig 2) with blue skies and sunshine.