On Jan 29, 4:51*pm, Ken Cook wrote:
On 29 Jan, 12:24, Dick wrote:





On Jan 29, 11:12*am, Ken Cook wrote:

09Z-09Z *29th January 2009

Lead Mill 218m
Max 3.9C(09Z29th) min -2.6C

Met O 253m
Max 8.3C(1330Z28th) min -1.3C grass -8.5C rain 0.4mm sun 28th 6.2hr

At the time of 8.3C max at Met O site, Lead Mill was 2.0C

Thick fog since 20Z last night
Currently(11Z) vis 100m temp 3C

More snow next week?

Ken
Copley, nr Barnard Castle, Teesdale, County Durhamhttp://copley.website.orange.co.uk

Ken,

That max of 8.3C at the Met Office site looks suspect. The nearest
radiosonde ascent, not too far away at Albermarle, showed no sign of
an inversion at your elevation at 12Z yesterday, and indicated a
temperature of about 3C at 250m. I notice the Met Office give 8.2C at
Durham as the highest max for NE England yesterday, so presumably they
dismissed it.

Dick Lovett
Charlbury- Hide quoted text -

- Show quoted text -

Hi, Dick,

Thanks for that. Embarrassingly, I haven't sent my Met O ob in yet
today! Swmbo has me decorating. However, Met O do not use climat obs
immediately as they do the SYNOP (I think) obs from Durham. AWS
supports the 8.3C.

Ken- Hide quoted text -

- Show quoted text -

Ken,

I'm slightly confused as to the weather in Copley early yesterday
afternoon. The large temperature difference at 1330Z between the two
sites suggests that the Lead Mill was in fog and the Met Office site
in bright sunshine. However, I assumed from your report of 'thick fog
since 20Z' that there hadn't been any fog that afternoon. If there was
fog, you must have been almost within 'touching distance' of the fog
top at the Lead Mill, and presumably able to see the sun quite
clearly.

Dick