On Dec 24, 9:29*am, Trevor Harley wrote:
On 2010-12-23 16:05:05 +0000, Alex Stephens said:

Thanks, very interesting. The 29th must have been quite a day!

Trev

The freezing fog that had hung around for days cleared for a time
overnight, rolled back in during the morning - probably the thickest
I've ever known it here with vis down to 15 or even 10 meters. The
maximum pin was at -15.8ºC, but I'd been observing it hourly for most
of the day and never seen it above -17.5ºC.

Walking on our local river was very safe, completely frozen over. A
situation I'll check out tomorrow.