On 15 Feb, 09:38, "Philip Eden" philipATweatherHYPHENukDOTcom wrote:

RMK: Min temp reached between 19 and 20z yesterday
when breeze picked up and disrupted inversion.
09-09: Tx 7.9 Tn -0.4 Tg -3.6 RR trace(w) sss 2.9

Hi, Philip,

Evening minima then mixing seem to be a feature of your site. The same
often happens here with light winds and minima two or three hours
after sunset on clear evenings. During the rest of the night the
temperature graph fluctuates with the katabatic wind which then
disappears just after sunrise when another dip in temperature occurs.
I assume it's a feature of hill country. Min last night was at 2030Z
yesterday evening before the katabatic and again at 0750Z after it
ceased.

The katabatic penetrates down to the Lead Mill for less time and
sometimes not at all.

Met O site 09-09 Tx 8.1 Tn -0.3 Tg -5.7 RR trace sss 7.3
Lead Mill 09-09 Tx 7.7 Tn -1.5

Ken
Copley 253metres, nr Barnard Castle, Teesdale, County Durham
http://copley.mysite