The fairly classic cold front was not really on the forecasts, which showed basically white cloud all day, with little change in temperature (16-17C.)

This morning was typical warm sector. Muggy, bits of drizzle, glimpses of the sun. Then around noon a narrow band of proper rain went through, showed up well on the radar. After falling to around 15.5C during the rain, the temp rose to 18.7C by mid afternoon. UP to 20C on Scilly where the clearance arrive around 11:00.

Behind the front very good visibility, less humid, and good sunny periods. In fact during the time I was at Sennen (13:00-15:00) it was largely unbroken sunshine.

Quite a nice clean wave in a mostly F2-3 offshore SSE wind. http://magicseaweed.com/Live-Sennen-Webcam/65/

Graham
Penzance - Nice to have some sunshine again.

On Tuesday, June 21, 2016 at 3:50:37 PM UTC+1, Graham Easterling wrote:
The fairly classic cold front was not really on the forecasts, which showed basically white cloud all day, with little change in temperature (16-17C..)

This morning was typical warm sector. Muggy, bits of drizzle, glimpses of the sun. Then around noon a narrow band of proper rain went through, showed up well on the radar. After falling to around 15.5C during the rain, the temp rose to 18.7C by mid afternoon. UP to 20C on Scilly where the clearance arrive around 11:00.

Behind the front very good visibility, less humid, and good sunny periods.. In fact during the time I was at Sennen (13:00-15:00) it was largely unbroken sunshine.

Quite a nice clean wave in a mostly F2-3 offshore SSE wind. http://magicseaweed.com/Live-Sennen-Webcam/65/

Graham
Penzance - Nice to have some sunshine again.

Eventual max 19.1C - rather more cloud appearing now. The clearance at noon shows up well up at Bossullow http://www.sunrecorder.net/googlemap...serial=1000 5

Graham
Penzance

On 21/06/2016 16:36, Graham Easterling wrote:
Eventual max 19.1C - rather more cloud appearing now. The clearance at noon shows up well up at Bossullow http://www.sunrecorder.net/googlemap...serial=1000 5

Graham, it was all a bit ambiguous here as there was no rain and we had
sunny intervals all day. But looking at the temperature and DPs, it
seems that the CF possibly went through about 14:50 though there was no
change in wind direction, or really any change in anything for that matter.

Anyway, what stuck out today was the very high UV - I recorded a UV
Index of 9.5 at 13:28. That's the highest this year by a reasonably
large margin and the highest since a UV of 10.0 on the 14th July 2014,
though many days have come close.

I am presuming this high UV occurred just before the CF went through and
confirms what we already know - very high UV levels are often found in
warm sectors.

--
Nick Gardner
Otter Valley, Devon
20 m amsl
http://www.ottervalleyweather.me.uk

On Tuesday, June 21, 2016 at 7:35:14 PM UTC+1, Nick Gardner wrote:
On 21/06/2016 16:36, Graham Easterling wrote:
Eventual max 19.1C - rather more cloud appearing now. The clearance at noon shows up well up at Bossullow http://www.sunrecorder.net/googlemap...serial=1000 5

Graham, it was all a bit ambiguous here as there was no rain and we had
sunny intervals all day. But looking at the temperature and DPs, it
seems that the CF possibly went through about 14:50 though there was no
change in wind direction, or really any change in anything for that matter.

Anyway, what stuck out today was the very high UV - I recorded a UV
Index of 9.5 at 13:28. That's the highest this year by a reasonably
large margin and the highest since a UV of 10.0 on the 14th July 2014,
though many days have come close.

I am presuming this high UV occurred just before the CF went through and
confirms what we already know - very high UV levels are often found in
warm sectors.

--
Nick Gardner
Otter Valley, Devon
20 m amsl
http://www.ottervalleyweather.me.uk

The clear air just behind the front http://www.sennen-cove.com/21june16.htm
Notice the Cu just inland, as usual.

Graham

On 21/06/2016 19:54, Graham Easterling wrote:
The clear air just behind the front http://www.sennen-cove.com/21june16.htm
Notice the Cu just inland, as usual.

Warm sector air again today Graham?

I recorded a UV of 9.5 today again. The banks of sea fog and cirrus
cloud might have tempered the heat of the sun but it didn't stop the UV
from being extreme.

--
Nick Gardner
Otter Valley, Devon
20 m amsl
http://www.ottervalleyweather.me.uk

On Wednesday, June 22, 2016 at 7:23:04 PM UTC+1, Nick Gardner wrote:
On 21/06/2016 19:54, Graham Easterling wrote:
The clear air just behind the front http://www.sennen-cove.com/21june16..htm
Notice the Cu just inland, as usual.

Warm sector air again today Graham?

I recorded a UV of 9.5 today again. The banks of sea fog and cirrus
cloud might have tempered the heat of the sun but it didn't stop the UV
from being extreme.

--
Nick Gardner
Otter Valley, Devon
20 m amsl
http://www.ottervalleyweather.me.uk

Certainly seems that way, some wonderfully eerie banks of fog around the Mount this morning. A few large spots of rain on a couple of occasions, but not amounting to anything. UV 10.6 on Scilly. I took the precaution of spraying my rather bald head with waterproof sunblock before going the sea yesterday.

Something of a clearance just to the west this afternoon, it can be seen here http://www.sennen-cove.com/index.htm , never made it ashore.

Lovely clean swell the last couple of days seems to have been constructive, and has brought back some more of the sand that was removed in vast quantities during the huge sea in February. http://www.turnstone-cottage.co.uk/StormImogen2016.pdf was the only really big sea since 2014 - but it was really quite something.

Looks like good surf for a while, and hopefully Penzance will now be to the west of that irritating front.

Graham
Penzance