The easterly wind topped F7 this morning on cliff tops, gust of 48kt at St Ives, 39mph at my station well back from he sea front.

This strength of wind straight from the east in late November, and yet the temp has peaked near 15C! Max of 14.8C in Penzance, 14.2C even in the near gale on top of the Island St Ives.

No dark easterly either, virtually cloudless from 11:00-14:00. Great windsurfing conditions at Marazion http://www.easterling.freeserve.co.uk/marazion.html

Possible to sit in west facing shelter, in the sun, and have a pint.

Has anyone tracked the air backwards? if so I'd be interested.

Back in 2010 during an easterly on 29th November, it was 11C colder.

Graham
Penzance

On Friday, November 28, 2014 2:53:29 PM UTC, Graham Easterling wrote:

Has anyone tracked the air backwards? if so I'd be interested.


Graham
Penzance

A back-trajectory from the GFS model suggests that at the 950mb level (1500-2000 ft) the air was over N Africa 7 days ago, in the region of Tunisia, W Libya and E Algeria, and arrived over southern UK via the western Med and France.

Dick Lovett

A back-trajectory from the GFS model suggests that at the 950mb level (1500-2000 ft) the air was over N Africa 7 days ago, in the region of Tunisia, W Libya and E Algeria, and arrived over southern UK via the western Med and France.

Dick Lovett

Thanks

Graham

On Friday, 28 November 2014 14:53:29 UTC, Graham Easterling wrote:
The easterly wind topped F7 this morning on cliff tops, gust of 48kt at St Ives, 39mph at my station well back from he sea front.

This strength of wind straight from the east in late November, and yet the temp has peaked near 15C! Max of 14.8C in Penzance, 14.2C even in the near gale on top of the Island St Ives.

No dark easterly either, virtually cloudless from 11:00-14:00. Great windsurfing conditions at Marazion http://www.easterling.freeserve.co.uk/marazion.html

Possible to sit in west facing shelter, in the sun, and have a pint.

Has anyone tracked the air backwards? if so I'd be interested.

Back in 2010 during an easterly on 29th November, it was 11C colder.

Graham
Penzance

Vindicated! Thanks Graham.
There are two factors here which fascinate me. I have never seen a Tc flow coming from so deep in the Sahara as this morning's chart indicates, although the chances of such air getting here are effectively zero .http://www.westwind.ch/?link=ukmb,ht...racknell+13 2
But what modified air we have already got may very well allow for considerable warming today. We may break a date record.
The other factor is this airstream's potential for producing a foehn.
Yesterday Innsbruck briefly reached 15C in the afternoon, and at 3am today three Swiss Alpine villages just S. of Zurich were each at 19C-although Zurich itself stayed at 3C. I expect the phenomenon will be more widespread today, although such a dry airstream may not have had the opportunity to pick up enough moisture while crossing the Med. to produce a well-developed foehn.
I've experienced two foehns. The first was when skiing in the Bernese Oberland. After 4days of crisp subzero skiing we set off into slush and a temp. of 12C. The sun was shining through thin low-level ice just above our heads, producing the best multi-coloured iridescence I've ever seen. That, combined with the crack of snow cannon and subsequent roar of avalanches made for an eerie day's skiing.
The other was while sitting outside at a bar just N. of the Oberland massif at the end of February. The fag-end of the foehn cloud-basically aC- was dissolving as it fell off the massif. The temp. was low to mid 20's C, and the air was as dry as a board, so dry that when I wound my film on-this was forty years ago!-I heard the crackling of triboluminescence and the film was covered in sparks when I developed it.
The final feature was that air was dead calm for minutes at a time, and then suddenly massive turbulence erupted for 30 seconds or so with wind speeds of probably 15-20 mph-then it would go dead calm again.
You're never bored in a foehn!

On Saturday, November 29, 2014 9:14:59 AM UTC, haaark wrote:
On Friday, 28 November 2014 14:53:29 UTC, Graham Easterling wrote:
The easterly wind topped F7 this morning on cliff tops, gust of 48kt at St Ives, 39mph at my station well back from he sea front.

This strength of wind straight from the east in late November, and yet the temp has peaked near 15C! Max of 14.8C in Penzance, 14.2C even in the near gale on top of the Island St Ives.

No dark easterly either, virtually cloudless from 11:00-14:00. Great windsurfing conditions at Marazion http://www.easterling.freeserve.co.uk/marazion.html

Possible to sit in west facing shelter, in the sun, and have a pint.
Has anyone tracked the air backwards? if so I'd be interested.
Back in 2010 during an easterly on 29th November, it was 11C colder.

Graham
Penzance

Vindicated! Thanks Graham.
There are two factors here which fascinate me. I have never seen a Tc flow coming from so deep in the Sahara as this morning's chart indicates, although the chances of such air getting here are effectively zero .http://www..westwind.ch/?link=ukmb,h...racknell+13 2
But what modified air we have already got may very well allow for considerable warming today. We may break a date record.
The other factor is this airstream's potential for producing a foehn.
Yesterday Innsbruck briefly reached 15C in the afternoon, and at 3am today three Swiss Alpine villages just S. of Zurich were each at 19C-although Zurich itself stayed at 3C. I expect the phenomenon will be more widespread today, although such a dry airstream may not have had the opportunity to pick up enough moisture while crossing the Med. to produce a well-developed foehn.
I've experienced two foehns. The first was when skiing in the Bernese Oberland. After 4days of crisp subzero skiing we set off into slush and a temp.. of 12C. The sun was shining through thin low-level ice just above our heads, producing the best multi-coloured iridescence I've ever seen. That, combined with the crack of snow cannon and subsequent roar of avalanches made for an eerie day's skiing.
The other was while sitting outside at a bar just N. of the Oberland massif at the end of February. The fag-end of the foehn cloud-basically aC- was dissolving as it fell off the massif. The temp. was low to mid 20's C, and the air was as dry as a board, so dry that when I wound my film on-this was forty years ago!-I heard the crackling of triboluminescence and the film was covered in sparks when I developed it.
The final feature was that air was dead calm for minutes at a time, and then suddenly massive turbulence erupted for 30 seconds or so with wind speeds of probably 15-20 mph-then it would go dead calm again.
You're never bored in a foehn!

Widely over 15C in west Cornwall today. 15C at Camborne, 15.3C max at Land's End, 15.2C max at my Penzance station etc. Virually unbroken sunshine and light winds to go with it.

The light breeze was onshore in Penzance. Around Marazion/Perranuthnoe thebreeze was offshore descending from the moors south of Camborne/Redruth, so I strongly suspect it topped 16C in those areas. (The closest we get to a foehn!)

Sennen with a just superb wave http://magicseaweed.com/Live-Sennen-Webcam/65/

Wow!

Graham
Penzance

"Graham Easterling" wrote in message
...
On Saturday, November 29, 2014 9:14:59 AM UTC, haaark wrote:
On Friday, 28 November 2014 14:53:29 UTC, Graham Easterling wrote:
The easterly wind topped F7 this morning on cliff tops, gust of 48kt at
St Ives, 39mph at my station well back from he sea front.

This strength of wind straight from the east in late November, and yet
the temp has peaked near 15C! Max of 14.8C in Penzance, 14.2C even in
the near gale on top of the Island St Ives.

No dark easterly either, virtually cloudless from 11:00-14:00. Great
windsurfing conditions at Marazion
http://www.easterling.freeserve.co.uk/marazion.html

Possible to sit in west facing shelter, in the sun, and have a pint.
Has anyone tracked the air backwards? if so I'd be interested.
Back in 2010 during an easterly on 29th November, it was 11C colder.

Graham
Penzance

Vindicated! Thanks Graham.
There are two factors here which fascinate me. I have never seen a Tc flow
coming from so deep in the Sahara as this morning's chart indicates,
although the chances of such air getting here are effectively zero
.http://www.westwind.ch/?link=ukmb,ht...racknell+13 2
But what modified air we have already got may very well allow for
considerable warming today. We may break a date record.
The other factor is this airstream's potential for producing a foehn.
Yesterday Innsbruck briefly reached 15C in the afternoon, and at 3am today
three Swiss Alpine villages just S. of Zurich were each at 19C-although
Zurich itself stayed at 3C. I expect the phenomenon will be more
widespread today, although such a dry airstream may not have had the
opportunity to pick up enough moisture while crossing the Med. to produce
a well-developed foehn.
I've experienced two foehns. The first was when skiing in the Bernese
Oberland. After 4days of crisp subzero skiing we set off into slush and a
temp. of 12C. The sun was shining through thin low-level ice just above
our heads, producing the best multi-coloured iridescence I've ever seen.
That, combined with the crack of snow cannon and subsequent roar of
avalanches made for an eerie day's skiing.
The other was while sitting outside at a bar just N. of the Oberland
massif at the end of February. The fag-end of the foehn cloud-basically
aC- was dissolving as it fell off the massif. The temp. was low to mid
20's C, and the air was as dry as a board, so dry that when I wound my
film on-this was forty years ago!-I heard the crackling of
triboluminescence and the film was covered in sparks when I developed it.
The final feature was that air was dead calm for minutes at a time, and
then suddenly massive turbulence erupted for 30 seconds or so with wind
speeds of probably 15-20 mph-then it would go dead calm again.
You're never bored in a foehn!

Widely over 15C in west Cornwall today. 15C at Camborne, 15.3C max at Land's
End, 15.2C max at my Penzance station etc. Virually unbroken sunshine and
light winds to go with it.

The light breeze was onshore in Penzance. Around Marazion/Perranuthnoe
thebreeze was offshore descending from the moors south of Camborne/Redruth,
so I strongly suspect it topped 16C in those areas. (The closest we get to a
foehn!)

Sennen with a just superb wave
http://magicseaweed.com/Live-Sennen-Webcam/65/

Wow!

=============

Cloud, mist, fog and light drizzle up here. Par for the course for filthy
mild tropical air in autumn.
Max. a very mild +11.1C.
Wow! Not.
Looking forward to the polar air after Monday in what looks like being quite
a clear and cold, frosty high, at least at altitude.

Will
--
http://www.lyneside.demon.co.uk/Hayt...antage_Pro.htm
Will Hand (Haytor, Devon, 1017 feet asl)
---------------------------------------------

On Saturday, 29 November 2014 15:16:14 UTC, Graham Easterling wrote:

Widely over 15C in west Cornwall today. 15C at Camborne, 15.3C max at Land's End, 15.2C max at my Penzance station etc. Virually unbroken sunshine and light winds to go with it.

The light breeze was onshore in Penzance. Around Marazion/Perranuthnoe thebreeze was offshore descending from the moors south of Camborne/Redruth, so I strongly suspect it topped 16C in those areas. (The closest we get to a foehn!)

Sennen with a just superb wave http://magicseaweed.com/Live-Sennen-Webcam/65/

Wow!

Graham
Penzance

The max here today was 15.7°C, a temperature I'm a little suspicious of because of the very light wind (E to SE) and solar radiation on the screen. This happens every now and then in winter but rarely, it seems, in summer. The max was early, about 1245Z, further increasing my suspicions because the screen is shaded by a tall tree in winter in the afternoon.
Nevertheless, 15.7 is the figure for comparison purposes and is easily a date record, the next highest being 12.4 (32 yrs). It's in the top 5% of my November max's and exceeds anything in December by 1.8 degC.

Tudor Hughes, Warlingham, NE Surrey, 557 ft.

On 29/11/2014 15:16, Graham Easterling wrote:
Widely over 15C in west Cornwall today. 15C at Camborne, 15.3C max at Land's End, 15.2C max at my Penzance station etc. Virually unbroken sunshine and light winds to go with it.

No filthy weather here either.

A maximum of 16.1C and barely a breath of wind.

Unbroken sunshine from dawn until around 15:00. Total of 7.3 hours.

Loads of insects still flying around such as hoverflies and ladybirds.
Also saw a few red admirals.

Managed a couple of hours kip in the hammock in the warm sunshine this
afternoon. A day like this at the end of November - it couldn't get any
better!

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

On 29/11/2014 17:58, Nick Gardner wrote:
A maximum of 16.1C and barely a breath of wind.

Just been looking back at maximum temperatures for November and today's
16.1C is nothing out of the ordinary for November as a month though
coming so late in the month makes it rather more notable.

The warmest temperature I have recorded in November since 2005 was in
2010 (not long before that nasty, cold weather set in) with 18.1C on the
4th. The whole first week of that month was unusually warm.

November 2011 (mean 10.9C) was the warmest and this month will not come
close. This month's mean is running at 10.0C.

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

Just been looking back at maximum temperatures for November and today's
16.1C is nothing out of the ordinary for November as a month though
coming so late in the month makes it rather more notable.

--
Nick Gardner


It's the combination of factors (source of air, wind strength, prolonged sunshine etc.) that have made the last couple of days so exceptional, not just the temperature.

Looking at my warmest last 10 days of NOvember (24 years of records.

30/11/01 16.0C - Wind SW
29/11/01 14.8C - SW
26/11/02 14.7C - SW
24/11/01 14.7C - W
05/12/07 14.7C - SW
06/12/07 14.6C - SW
28/11/01 14.6C - W

You get the idea, in fact there has been no day after 15th NOvember, in the last 24 years, when the temperature has exceeded 13C during an easterly wind. Yet on Friday, in a near gale due easterly, gusting well over 40mph in exposed spots (50mph at St. Ives) it reached 14.8C, completely smashing the easterly record for this time of year.

Hence my interest in the source of the air.

Yesterday we lost the wind almost completely hence the even higher temperatures.

Graham
Penzance