Last week in Penzance

Date Min Max
23 5.5 8.4
24 6.5 11.2
25 8.4 12.7
26 8.6 8.7
27 5.6 8.7
28 5.5 8.6
29 2.6 6.1
Looks like temperatures on the rise again today.

In fact, the mean temperature over the last week was 7.7C, which is 0.4C above normal (1981-2010) Back in 2010 the mean temperature for the whole month was 4.6C (-2.7C). 1st-29th this month 8.3C (+1.0C)

So, it's been a mild month. As it has at many spots, milder as you head west (generally speaking) Anomaly +0.8C at Camborne, around +1.5C in western Ireland. http://www.met.reading.ac.uk/~brugge/anomt.jpg

In Penzance, the 7th warmest January of the century, after
2007 9.9
2002 9.0
2008 9.0
2012 8.8
2005 8.7
2016 8.6
2018 8.3

Lowest temperature of the winter so far -0.1C. If the beast from the east gets pushed back much more, it'll be just in time for a summer heatwave.

That's SST for you. (controversial!)

Graham
Penzance

In message ,
Graham Easterling writes
Back in 2010 the mean temperature for the whole month was 4.6C (-2.7C).

So an exceptionally cold winter month in Penzance is about the same as
an average one for most of the UK away from the SW. That neatly points
up just how mild your neck of the woods is in winter.
--
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)

On Wednesday, January 30, 2019 at 10:34:57 AM UTC, John Hall wrote:
In message ,
Graham Easterling writes
Back in 2010 the mean temperature for the whole month was 4.6C (-2.7C).

So an exceptionally cold winter month in Penzance is about the same as
an average one for most of the UK away from the SW. That neatly points
up just how mild your neck of the woods is in winter.
--
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)

Yes indeed.

However, on the rare occasions conditions are just right and very cold air comes down the peninsula it can get very cold, with a sub zero max. This is normally associated with fronts attempting to get in from the S or SW, or quite extreme instability over the warm sea which surrounds Cornwall, either tend to give very heavy snow. Certainly I never experienced snow like this during the years I lived in Wiltshire or London
http://www.turnstone-cottage.co.uk/1987Snow.pdf

This was last February 28th, the day before heavy snow was forecast.

https://www.youtube.com/watch?v=hYPz8jY7s-o (worth watching right through)

The air had been streaming straight down the peninsula, temperatures dropped well below freezing, then the wind backed marginally & brought snow showers onshore, giving 5-10" of snow in 2 or 3 hours. There was very little snow north of Truro

It's rare for it to snow here, but when it does it's nearly always heavy. Very different to when I was recording in Wootton Bassett, long cold spells, but rarely much snow.

Graham
Penzance





Despite the average high temperatures in winter down here, heavy snowfalls are more common than say southern Devon, Dorset or Hants.

Then we can get heavy snow under a dangler, but that quickly melts.

On Wednesday, January 30, 2019 at 1:59:17 PM UTC, Graham Easterling wrote:
On Wednesday, January 30, 2019 at 10:34:57 AM UTC, John Hall
writes
Back in 2010 the mean temperature for the whole month was 4.6C (-2.7C)..

So an exceptionally cold winter month in Penzance is about the same as
an average one for most of the UK away from the SW. That neatly points
up just how mild your neck of the woods is in winter.
--
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)

Yes indeed.

However, on the rare occasions conditions are just right and very cold air comes down the peninsula it can get very cold, with a sub zero max. This is normally associated with fronts attempting to get in from the S or SW, or quite extreme instability over the warm sea which surrounds Cornwall, either tend to give very heavy snow. Certainly I never experienced snow like this during the years I lived in Wiltshire or London
http://www.turnstone-cottage.co.uk/1987Snow.pdf

This was last February 28th, the day before heavy snow was forecast.

https://www.youtube.com/watch?v=hYPz8jY7s-o (worth watching right through)

The air had been streaming straight down the peninsula, temperatures dropped well below freezing, then the wind backed marginally & brought snow showers onshore, giving 5-10" of snow in 2 or 3 hours. There was very little snow north of Truro

It's rare for it to snow here, but when it does it's nearly always heavy. Very different to when I was recording in Wootton Bassett, long cold spells, but rarely much snow.

Graham
Penzance


Despite the average high temperatures in winter down here, heavy snowfalls are more common than say southern Devon, Dorset or Hants.

Then we can get heavy snow under a dangler, but that quickly melts.

You're right Graham.
No danglers here in South Devon.
We are far too refined.
Mind you, in North Devon. But that's a different story.

;-)

Len

Your mins are all higher than my high min for the month, and your max's all higher than my high max, except one.
I'll do a proper report at months end.
Very snowy, real blizzard conditions last night.

DM. 740m. La Moratille. Corrèze. France.

Awoke to a few snowflakes falling this morning though it wasn't a true
snowfall, more like a wintry mix of rain/sleet/snow but it soon
completely turned to rain then cleared away by mid-morning to a sunny day.

First snowflakes seen since the 'Beast from the East' of last March.

Max temps
23rd 7.9C
24th 8.7C
25th 11.7C
26th 11.2C
27th 8.7C
28th 9.4C
29th 6.3C
30th 6.8C

This month's mean temperature is running slightly below my eLTA and with
33 mm so far, it will end up drier than normal. Sunshine at 66 hours, so
it will be below average by the close of tomorrow.

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

On Wednesday, 30 January 2019 19:31:17 UTC, Nick Gardner wrote:
Awoke to a few snowflakes falling this morning though it wasn't a true
snowfall, more like a wintry mix of rain/sleet/snow but it soon
completely turned to rain then cleared away by mid-morning to a sunny day.

First snowflakes seen since the 'Beast from the East' of last March.

Max temps
23rd 7.9C
24th 8.7C
25th 11.7C
26th 11.2C
27th 8.7C
28th 9.4C
29th 6.3C
30th 6.8C

This month's mean temperature is running slightly below my eLTA and with
33 mm so far, it will end up drier than normal. Sunshine at 66 hours, so
it will be below average by the close of tomorrow.

Similar here but a touch cooler as you would anticipate.

Max temps
23rd 4.6
24th 7.9
25th 11.7
26th 9.1
27th 5.4
28th 5.7
29th 3.5
30th 3.9

Mean is currently 0.8 above ELTA. Rainfall at 102 mm is less than half the average of 230 mm, so it has been dry here too.

--
Freddie
Ystrad
Rhondda
148m AMSL
http://www.hosiene.co.uk/weather/
https://twitter.com/YstradRhonddaWx for hourly reports (very few tweets getting through currently)
Stats for the month so far: https://www.hosiene.co.uk/weather/st...201901JAN.xlsx

On Wednesday, January 30, 2019 at 8:44:50 PM UTC, Freddie wrote:
On Wednesday, 30 January 2019 19:31:17 UTC, Nick Gardner wrote:
Awoke to a few snowflakes falling this morning though it wasn't a true
snowfall, more like a wintry mix of rain/sleet/snow but it soon
completely turned to rain then cleared away by mid-morning to a sunny day.

First snowflakes seen since the 'Beast from the East' of last March.

Max temps
23rd 7.9C
24th 8.7C
25th 11.7C
26th 11.2C
27th 8.7C
28th 9.4C
29th 6.3C
30th 6.8C

This month's mean temperature is running slightly below my eLTA and with
33 mm so far, it will end up drier than normal. Sunshine at 66 hours, so
it will be below average by the close of tomorrow.

Similar here but a touch cooler as you would anticipate.

Max temps
23rd 4.6
24th 7.9
25th 11.7
26th 9.1
27th 5.4
28th 5.7
29th 3.5
30th 3.9

Mean is currently 0.8 above ELTA. Rainfall at 102 mm is less than half the average of 230 mm, so it has been dry here too.

--
Freddie
Ystrad
Rhondda
148m AMSL
http://www.hosiene.co.uk/weather/
https://twitter.com/YstradRhonddaWx for hourly reports (very few tweets getting through currently)
Stats for the month so far: https://www.hosiene.co.uk/weather/st...201901JAN.xlsx
--------------------------------------------------------------------------
Slightly colder than average here on SW Devon coast.
Mean temp for Jan so far to 30th is 6.4°C.
Average for Jan 1986-2018 is 6.5°C.

That's sudden stratospheric warming for you.

Len
Wembury

On Wednesday, January 30, 2019 at 10:05:26 AM UTC, Graham Easterling wrote:
Last week in Penzance

Date Min Max
23 5.5 8.4
24 6.5 11.2
25 8.4 12.7
26 8.6 8.7
27 5.6 8.7
28 5.5 8.6
29 2.6 6.1
Looks like temperatures on the rise again today.

In fact, the mean temperature over the last week was 7.7C, which is 0.4C above normal (1981-2010) Back in 2010 the mean temperature for the whole month was 4.6C (-2.7C). 1st-29th this month 8.3C (+1.0C)

So, it's been a mild month. As it has at many spots, milder as you head west (generally speaking) Anomaly +0.8C at Camborne, around +1.5C in western Ireland. http://www.met.reading.ac.uk/~brugge/anomt.jpg

In Penzance, the 7th warmest January of the century, after
2007 9.9
2002 9.0
2008 9.0
2012 8.8
2005 8.7
2016 8.6
2018 8.3

Lowest temperature of the winter so far -0.1C. If the beast from the east gets pushed back much more, it'll be just in time for a summer heatwave.

That's SST for you. (controversial!)

Graham
Penzance

Lucky you, it's minus 8 here this morning,

Ian Bingham,
Inchmarlo, Aberdeenshire.
80m asl.