1500z: 23015KT 50km 1CU030 (1SC040 2AC150) 6CI250 16.9/7.8 QFF 1017.9 steady.
SYNOP: 42684 62315 10169 20078 40179 55001 81842 333 81830 86075 90710 91125=
Cumulus and stratocumulus broke to small amounts around midday, revealing large amounts of dense cirrus with patchy lenticular medium cloud underneath. A "back edge" been visible to the west for hours but has barely moved, hence I think the altocumulus and cirrus are orographic in nature. Very good or excellent visibility. Surface wind SW-WSW F4-5 with gusts 25-27 knots. Maximum temperature so far is 18.3 (1357z).