I don't know what was going on there Brian. The fog was predicted but the southerly breeze was not. The breeze was W to NW here all night so maybe something homegrown from your area. Maybe the coastal breeze affected things. I don't really know to be honest.
I was out before dawn this morning and it was a stunning clear sky with a harsh (almost severe) frost. Our car had a soild thick white covering which looked more like snow than frost. I even seen a brilliant flash of lightning on the northern horizon late last night. Amazingly the sferics charts didn't pick it up, but it was a lovely sight. It was a beautiful sunny clear morning but now it's complete cloud cover and showers. Planet spotting prospects are not good. Radar shows many wintry showers to the W trying to creep further inland. Could be a severe frost tonight with thick fog in places. The weather doesn't seem to know what it's doing here at the min. Typical N. Ireland weather