Tideswell, Derbyshire - Wednesday 9th January 2013
-----------------------------------------------------

0630z WNW F1 30+km 1Sc015 -00.2/-00.2 1022
RMK: A fine clear morning with a sky full of stars. Quite some time
since I have been able to say that. There's a slight hoar frost on
grass and cars.

--
Norman Lynagh
Tideswell, Derbyshire
303m a.s.l.

Tideswell, Derbyshire - Wednesday 9th January 2013
-----------------------------------------------------

0630z WNW F1 30+km 1Sc015 -00.2/-00.2 1022
RMK: A fine clear morning with a sky full of stars. Quite some time
since I have been able to say that. There's a slight hoar frost on
grass and cars.

0900z NNW F1 0250 FG SKC +01.3/+01.3 1023
RMK: Patchy radiation fog since about 0730z. Blue sky visible
above the fog. Most of the frost has melted.
09-09z: Tx 8.2 (1515z) Tn -0.6 (0750z) RR 1.0
15-09z: Tg -3.6 00-24z: Sun nil
First air frost since 14 December.

--
Norman Lynagh
Tideswell, Derbyshire
303m a.s.l.

Tideswell, Derbyshire - Wednesday 9th January 2013
-----------------------------------------------------

0630z WNW F1 30+km 1Sc015 -00.2/-00.2 1022
RMK: A fine clear morning with a sky full of stars. Quite some time
since I have been able to say that. There's a slight hoar frost on
grass and cars.

0900z NNW F1 0250 FG SKC +01.3/+01.3 1023
RMK: Patchy radiation fog since about 0730z. Blue sky visible
above the fog. Most of the frost has melted.
09-09z: Tx 8.2 (1515z) Tn -0.6 (0750z) RR 1.0
15-09z: Tg -3.6 00-24z: Sun nil
First air frost since 14 December.

1700z WNW F1-2 20km 1St002 4Ac150 6Ci250 +00.8/+00.8 1021
RMK: A lot of very low cloud and intermittent fog for much of the day
but also some intervals of bright sunshine. Somewhat counter-
intuitively the fog and almost all of the stratus dispersed around dusk and
it's now a fine clear evening. Max temp 3.9

--
Norman Lynagh
Tideswell, Derbyshire
303m a.s.l.

"Norman" wrote in message
...
Tideswell, Derbyshire - Wednesday 9th January 2013
1700z WNW F1-2 20km 1St002 4Ac150 6Ci250 +00.8/+00.8 1021
RMK: A lot of very low cloud and intermittent fog for much of the day
Somewhat counter-
intuitively the fog and almost all of the stratus dispersed around dusk
and
it's now a fine clear evening. Max temp 3.9

I think there was a convective component to the maintenance of the low cloud
this afternoon - locally I had CU with base less than 1000 feet for a lot of
the time. Normally would be regarded as stratus, but if you watched an
individual cloud for a couple of minutes you could discern the convective
overturning taking place. I'm certain it wasn't turbulent mixing, as there
appeared to be very little wind either at ground level or cloud level - and
the fact that it all melted away at dusk somewhat backs up the convective
idea.
--
Freddie
Bayston Hill
Shropshire
102m AMSL
http://www.hosiene.co.uk/weather/
https://twitter.com/#!/BaystonHillWx for hourly reports

Freddie wrote:


"Norman" wrote in message
...
Tideswell, Derbyshire - Wednesday 9th January 2013
1700z WNW F1-2 20km 1St002 4Ac150 6Ci250 +00.8/+00.8 1021
RMK: A lot of very low cloud and intermittent fog for much of the day
Somewhat counter-
intuitively the fog and almost all of the stratus dispersed around dusk and
it's now a fine clear evening. Max temp 3.9

I think there was a convective component to the maintenance of the low cloud
this afternoon - locally I had CU with base less than 1000 feet for a lot of
the time. Normally would be regarded as stratus, but if you watched an
individual cloud for a couple of minutes you could discern the convective
overturning taking place. I'm certain it wasn't turbulent mixing, as there
appeared to be very little wind either at ground level or cloud level - and
the fact that it all melted away at dusk somewhat backs up the convective
idea.

No signs of any convective movement in the cloud here. It all looked very
stratiform and was flowing over the contours of the land

--
Norman Lynagh
Tideswell, Derbyshire
303m a.s.l.

On 9 Jan 2013 17:49:48 GMT, "Norman" wrote:
No signs of any convective movement in the cloud here. It all
looked very
stratiform and was flowing over the contours of the land

Ah ok - just a concidence then, I guess.

--
Freddie
Bayston Hill
Shropshire
102m AMSL
http://www.hosiene.co.uk/weather/
https://twitter.com/#!/BaystonHillWx*for hourly reports*