Slot over the high ground to the left and nose crabbing slightly to the right.
We get that effect quite often up north. The blackness is due to the exposure because of the flash. The bottom of the clouds don't even look like CB bottoms.
It looks to me like its quite moist air which has been lifted and become unstable and formed CU as its banged up against the air getting lifted by the hills.
Its more than likely running south with the sea on his rhs out of shot and that's the first bit of high ground after the air has come off the atlantic and it will be hot ground so churn everything up.
Last edited by mad_jock; 8th Jun 2013 at 19:05.