Call the ministry! The Dementors have left Azkaban and are massing over North Dorset. A moody walk this evening along the high ground following the Tarrant valley. The sky was streaked by cloud and then strange clouds, mammato cumulus I understand, which appeared over a clump of woodland, began to develop giving a really eerie feel; these clouds shifted and morphed, at one point looking like a 70's lava lamp, before drifting off to the South East.  I don't know whether the clouds set the tone or charged air of the developing electric storm or it was just a weird day, but this twilight walk had an unnerving feel to it. The local wildlife were active, hares, deer, foxes and unseen things moved through the hedgerows and fields, inside shadowy woods stuff was happening, what stuff I don't know, only silhouettes were visible in the failing light.