This morning was forecast to be sunny, but there was what seemed to be a veil of cirrostratus, rendering the sunshine very weak. However, the sun had an orange tinge and there were no haloes; it was evidently dust rather then ice crystals.

I'm wondering if it was in fact caused by the large fire at The Belfast Primark store. The winds, both surface and at 500mb, were in just the right direction.

Ian Bingham,
Inchmarlo, Abeerdeenshire.

On 28/08/2018 18:48, Ian Bingham wrote:
This morning was forecast to be sunny, but there was what seemed to be a veil of cirrostratus, rendering the sunshine very weak. However, the sun had an orange tinge and there were no haloes; it was evidently dust rather then ice crystals.

I'm wondering if it was in fact caused by the large fire at The Belfast Primark store. The winds, both surface and at 500mb, were in just the right direction.

Large as it was I would have thought it would take a fire many orders of
magnitude greater to have any discernible effect, especially at the
distance you are from Belfast. Even the Saddleworth moor fire earlier
this summer which covered several square miles, didn't have (as far as I
know) have any effect so far away.

--
Col

Bolton, Lancashire
160m asl
Snow videos:
http://www.youtube.com/channel/UC3QvmL4UWBmHFMKWiwYm_gg

Ian Bingham wrote:

This morning was forecast to be sunny, but there was what seemed to
be a veil of cirrostratus, rendering the sunshine very weak.
However, the sun had an orange tinge and there were no haloes; it was
evidently dust rather then ice crystals.

I'm wondering if it was in fact caused by the large fire at The
Belfast Primark store. The winds, both surface and at 500mb, were in
just the right direction.

Ian Bingham,
Inchmarlo, Abeerdeenshire.


Hi Ian,

There has been some talk about it being smoke from the very extensive
wildfires in British Columbia. It appears to have affected many places
in the British Isles. I don't know about here in the Peak District,
though. We've had overcast low cloud all day so anything at middle or
high levels has been out of sight.

--
Norman Lynagh
Tideswell, Derbyshire
303m a.s.l.
https://peakdistrictweather.org
Twitter: @TideswellWeathr

On Tuesday, 28 August 2018 19:51:04 UTC+1, Norman Lynagh wrote:
Ian Bingham wrote:
Hi Ian,

There has been some talk about it being smoke from the very extensive
wildfires in British Columbia. It appears to have affected many places
in the British Isles. I don't know about here in the Peak District,
though. We've had overcast low cloud all day so anything at middle or
high levels has been out of sight.


Thanks for this. I have changed Cs in my weather diary to high-level smoke. I, too, couldn't see any halo around the sun and was puzzled. The value of newsgroups (:0)
Ken
Copley
Teesdale

Norman Lynagh wrote:

There has been some talk about it being smoke from the very extensive
wildfires in British Columbia. It appears to have affected many places
in the British Isles. I don't know about here in the Peak District,
though. We've had overcast low cloud all day so anything at middle or
high levels has been out of sight.


I overheard a discussion this afternoon between MeteoGroup forecasters querying the conditions seen over the northern part of Northern England on satellite imagery. It appeared at first glance to be cirrus / cs but then smoke was mentioned. If it was overcast at Tideswell I am being careful to only insinuate bright conditions in the north of N England!

Here in London there were similar conditions for a time in a brighter spell. By dusk, a slightly unstable appearance to the sky (but again, quite hazy / smoky looking) seems to have foreshadowed some interesting showery development coming up from France.

Cheers Julian, Molesey (taking cover here from the tedium of one or two posts on the wx and climate group)

Sorry for the separate posts but have just seen a very bright orange moon appear in the sky over south London. Cloud increasing soon, I suspect.

Julian

In message ,
writes
Sorry for the separate posts but have just seen a very bright orange
moon appear in the sky over south London. Cloud increasing soon, I
suspect.

Julian

I've just looked out on reading your post, and here in Cranleigh the
moon has a definitely yellow tinge rather than the usual nearly pure
white.
--
John Hall
"Hegel was right when he said that we learn from history
that man can never learn anything from history."
George Bernard Shaw (1856-1950)

"Norman Lynagh" wrote in message
...
Ian Bingham wrote:

This morning was forecast to be sunny, but there was what seemed to
be a veil of cirrostratus, rendering the sunshine very weak.
However, the sun had an orange tinge and there were no haloes; it was
evidently dust rather then ice crystals.

I'm wondering if it was in fact caused by the large fire at The
Belfast Primark store. The winds, both surface and at 500mb, were in
just the right direction.

Ian Bingham,
Inchmarlo, Abeerdeenshire.


Hi Ian,

There has been some talk about it being smoke from the very extensive
wildfires in British Columbia. It appears to have affected many places
in the British Isles. I don't know about here in the Peak District,
though. We've had overcast low cloud all day so anything at middle or
high levels has been out of sight.

--
Norman Lynagh
Tideswell, Derbyshire
303m a.s.l.
https://peakdistrictweather.org
Twitter: @TideswellWeathr

As you say Norman, there was mention on a BBC forecast about Canadian smoke
over the UK. I could see some patches in the visible sat pics this morning
over the northern North Sea, but there was too much low cloud to see if
there was any further south. However, the Sc cleared from here in Wokingham
this afternoon, and there was a definate elevated haze layer near or below
the cirrus level (25000 to 35000 ft). It did look like cirrostratus,
especialy towards the sun. I did observe some halo phenomena for a time
associated with the cirrus.

The haze layer over and east of Scotland can be seen on this MSG4 image from
0900z on 28th.
http://www.woksat.info/etcaah28m/ful...sg-0900-uk.JPG
--
Bernard Burton

Satellite images and weather data for Wokingham at:
www.woksat.info/wwp.html



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Bernard Burton wrote:

"Norman Lynagh" wrote in message
...
Ian Bingham wrote:

This morning was forecast to be sunny, but there was what seemed
to be a veil of cirrostratus, rendering the sunshine very weak.
However, the sun had an orange tinge and there were no haloes; it
was evidently dust rather then ice crystals.

I'm wondering if it was in fact caused by the large fire at The
Belfast Primark store. The winds, both surface and at 500mb,
were in just the right direction.

Ian Bingham,
Inchmarlo, Abeerdeenshire.


Hi Ian,

There has been some talk about it being smoke from the very
extensive wildfires in British Columbia. It appears to have
affected many places in the British Isles. I don't know about here
in the Peak District, though. We've had overcast low cloud all day
so anything at middle or high levels has been out of sight.

-- Norman Lynagh
Tideswell, Derbyshire
303m a.s.l.
https://peakdistrictweather.org
Twitter: @TideswellWeathr

As you say Norman, there was mention on a BBC forecast about Canadian
smoke over the UK. I could see some patches in the visible sat pics
this morning over the northern North Sea, but there was too much low
cloud to see if there was any further south. However, the Sc cleared
from here in Wokingham this afternoon, and there was a definate
elevated haze layer near or below the cirrus level (25000 to 35000
ft). It did look like cirrostratus, especialy towards the sun. I did
observe some halo phenomena for a time associated with the cirrus.

The haze layer over and east of Scotland can be seen on this MSG4
image from 0900z on 28th.
http://www.woksat.info/etcaah28m/ful...sg-0900-uk.JPG


There's a global image of the distribution of smoke/dust at

https://twitter.com/UNFCCC/status/10...298633728?s=20

It shows quite clearly that the British Columbia fires are the source
of the high-level haze over the British Isles.

--
Norman Lynagh
Tideswell, Derbyshire
303m a.s.l.
https://peakdistrictweather.org
Twitter: @TideswellWeathr

On Tuesday, August 28, 2018 at 6:48:05 PM UTC+1, Ian Bingham wrote:
This morning was forecast to be sunny, but there was what seemed to be a veil of cirrostratus, rendering the sunshine very weak. However, the sun had an orange tinge and there were no haloes; it was evidently dust rather then ice crystals.

I'm wondering if it was in fact caused by the large fire at The Belfast Primark store. The winds, both surface and at 500mb, were in just the right direction.

Ian Bingham,
Inchmarlo, Abeerdeenshire.

I now realise that the dust/smoke couldn't have come from the Belfast fire. I noticed the dusty sky first thing in the morning, but I discovered later that the fire didn't start until 11am! So much for the neat theory. Moral: get all the facts before you open your big mouth.

However, thanks everyone for the interesting replies.

Ian Bingham,
Inchmarlo, Aberdeenshire.