0850

Yesterdays peak 13cm snow cover has now decreased to 7cm full cover. A
combination of heating from below, compaction, rain, drizzle and a spell of
above freezing yesterday evening has done the damage at my altitude. Higher
up (circa 100 metres) there is still 10-15cm with drifts).

Fresh dusting of less than 1cm overnight making today the 8th consecutive
day with sleet/snow falling. Will it ever stop? :-)
Cloudy, misty and very cold T-1.8C D -1.8C with a F1 ENE wind.

Amazingly still dripping and icicles on shed roof (unheated), there must
have been a lot of heat stored on the surfaces before the snow as we did not
have a frost in this current spell before the snow came.

Roads are fine. Bits of snow and ice but nothing to trouble experienced and
careful drivers. Yesterdays sightseers (100s of them) did a good job of
clearing the road by driving/skidding on it LOL.

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

"Eskimo Will" wrote in message
...
0850

Yesterdays peak 13cm snow cover has now decreased to 7cm full cover. A
combination of heating from below, compaction, rain, drizzle and a spell of
above freezing yesterday evening has done the damage at my altitude. Higher
up (circa 100 metres) there is still 10-15cm with drifts).

Fresh dusting of less than 1cm overnight making today the 8th consecutive day
with sleet/snow falling. Will it ever stop? :-)
Cloudy, misty and very cold T-1.8C D -1.8C with a F1 ENE wind.

Amazingly still dripping and icicles on shed roof (unheated), there must have
been a lot of heat stored on the surfaces before the snow as we did not have
a frost in this current spell before the snow came.

Roads are fine. Bits of snow and ice but nothing to trouble experienced and
careful drivers. Yesterdays sightseers (100s of them) did a good job of
clearing the road by driving/skidding on it LOL.

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



A good 12 cm here in Bracknell this morning, Will. Unusual for us to get so
much. Most fell during a couple of hours around lunchtime yesterday, when the
flakes were so fluffy I could see the snow depth rising by the minute! Had a
max of 13 cm at 1500Z, but compacting has reduced it a bit.

Roy
======

"Roy Avis" wrote in message
...
"Eskimo Will" wrote in message
...
0850

Yesterdays peak 13cm snow cover has now decreased to 7cm full cover. A
combination of heating from below, compaction, rain, drizzle and a spell
of above freezing yesterday evening has done the damage at my altitude.
Higher up (circa 100 metres) there is still 10-15cm with drifts).

Fresh dusting of less than 1cm overnight making today the 8th consecutive
day with sleet/snow falling. Will it ever stop? :-)
Cloudy, misty and very cold T-1.8C D -1.8C with a F1 ENE wind.

Amazingly still dripping and icicles on shed roof (unheated), there must
have been a lot of heat stored on the surfaces before the snow as we did
not have a frost in this current spell before the snow came.

Roads are fine. Bits of snow and ice but nothing to trouble experienced
and careful drivers. Yesterdays sightseers (100s of them) did a good job
of clearing the road by driving/skidding on it LOL.

Will
--
http://www.lyneside.demon.co.uk/Hayt...antage_Pro.htm
Will Hand (Haytor, Devon, 1017 feet asl)
---------------------------------------------
A good 12 cm here in Bracknell this morning, Will. Unusual for us to get
so much. Most fell during a couple of hours around lunchtime yesterday,
when the flakes were so fluffy I could see the snow depth rising by the
minute! Had a max of 13 cm at 1500Z, but compacting has reduced it a bit.


Yes. Never got much when I lived in that area (1975-2002) (a few events in
the 80s).
Thanks for report, get out and enjoy it!

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

On Sat, 19 Jan 2013 09:29:19 -0000
"Roy Avis" wrote:

"Eskimo Will" wrote in message
...
0850

Yesterdays peak 13cm snow cover has now decreased to 7cm full
cover. A combination of heating from below, compaction, rain,
drizzle and a spell of above freezing yesterday evening has done
the damage at my altitude. Higher up (circa 100 metres) there is
still 10-15cm with drifts).

Fresh dusting of less than 1cm overnight making today the 8th
consecutive day with sleet/snow falling. Will it ever stop? :-)
Cloudy, misty and very cold T-1.8C D -1.8C with a F1 ENE wind.

Amazingly still dripping and icicles on shed roof (unheated), there
must have been a lot of heat stored on the surfaces before the snow
as we did not have a frost in this current spell before the snow
came.

Roads are fine. Bits of snow and ice but nothing to trouble
experienced and careful drivers. Yesterdays sightseers (100s of
them) did a good job of clearing the road by driving/skidding on it
LOL.

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



A good 12 cm here in Bracknell this morning, Will. Unusual for us to
get so much. Most fell during a couple of hours around lunchtime
yesterday, when the flakes were so fluffy I could see the snow depth
rising by the minute! Had a max of 13 cm at 1500Z, but compacting has
reduced it a bit.


Must confess to not having had my ruler with me but on my walk to and
from the shops it didn't look more than about 7-8cm. Also slushy in a
few places as there's been a slow thaw. A few grains of ice falling at
the time, about 0900, and now (1050) the odd flake of snow.



--
Graham P Davis, Bracknell, Berks.
Time flies like an arrow but fruit flies like a banana. [Marx]

"Graham P Davis" wrote in message
-jade...
On Sat, 19 Jan 2013 09:29:19 -0000
"Roy Avis" wrote:

"Eskimo Will" wrote in message
...
0850

Yesterdays peak 13cm snow cover has now decreased to 7cm full
cover. A combination of heating from below, compaction, rain,
drizzle and a spell of above freezing yesterday evening has done
the damage at my altitude. Higher up (circa 100 metres) there is
still 10-15cm with drifts).

Fresh dusting of less than 1cm overnight making today the 8th
consecutive day with sleet/snow falling. Will it ever stop? :-)
Cloudy, misty and very cold T-1.8C D -1.8C with a F1 ENE wind.

Amazingly still dripping and icicles on shed roof (unheated), there
must have been a lot of heat stored on the surfaces before the snow
as we did not have a frost in this current spell before the snow
came.

Roads are fine. Bits of snow and ice but nothing to trouble
experienced and careful drivers. Yesterdays sightseers (100s of
them) did a good job of clearing the road by driving/skidding on it
LOL.

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



A good 12 cm here in Bracknell this morning, Will. Unusual for us to
get so much. Most fell during a couple of hours around lunchtime
yesterday, when the flakes were so fluffy I could see the snow depth
rising by the minute! Had a max of 13 cm at 1500Z, but compacting has
reduced it a bit.


Must confess to not having had my ruler with me but on my walk to and
from the shops it didn't look more than about 7-8cm. Also slushy in a
few places as there's been a slow thaw. A few grains of ice falling at
the time, about 0900, and now (1050) the odd flake of snow.



--
Graham P Davis, Bracknell, Berks.
Time flies like an arrow but fruit flies like a banana. [Marx]


I measured several spots in my garden (Wildridings), Graham, which is quite
well exposed, and had variations between 12 and 14 cm. I did note yesterday,
that the paths and concrete areas were intially wet from the early snow,
whereas the earth and grass were covered immediately.

Bernard measured 12 cm in Wokingham at 0900 as well, I notice.

Roy
==================

On 19/01/2013 09:03, Eskimo Will wrote:
0850

...

Amazingly still dripping and icicles on shed roof (unheated), there
must have been a lot of heat stored on the surfaces before the snow as
we did not have a frost in this current spell before the snow came.

...



"Radiation thaw"?

We had this situation at Ashurst (New Forest) both yesterday and today.
According to the thermometer in my back garden the air temperature has
remained below freezing both these two days, helped by the 9 cm of snow
we had yesterday. But there has been a significant thaw on both days -
as I write water is dripping from the branches of trees as snow on these
is melting.

Whilst the thawing on the roads etc is very likely due to thermal
storage following the early January mild spell, snow is an extremely
efficient absorber as well as radiator at infra-red wavelengths. There
is a nice layer of relatively warm low cloud only about a thousand feet
above the ground and I reckon the downward radiation from this, helped
by some contribution from the diffuse solar radiation as well as ground
"storage", is steadily "cooking" my snow cover.

Today's thaw is only a slow one and I reckon the Ashurst Observatory is
good for at least two more days with "Snow Lying". But when a cold
spell finishes, low cloud in a mild SW breeze will thaw snow quicker
than anything apart from heavy warm rain. It's a lot quicker than
direct sunshine, most of which is reflected and which also has to
compete with the snow radiating energy to that part of the sky (nearly
all of it) from which the sun isn't shining.

--
- Yokel -

Yokel posts via a spam-trap account which is not read.

"Yokel" wrote in message
...
On 19/01/2013 09:03, Eskimo Will wrote:
0850

...

Amazingly still dripping and icicles on shed roof (unheated), there must
have been a lot of heat stored on the surfaces before the snow as we did
not have a frost in this current spell before the snow came.

...



"Radiation thaw"?

We had this situation at Ashurst (New Forest) both yesterday and today.
According to the thermometer in my back garden the air temperature has
remained below freezing both these two days, helped by the 9 cm of snow we
had yesterday. But there has been a significant thaw on both days - as I
write water is dripping from the branches of trees as snow on these is
melting.

Whilst the thawing on the roads etc is very likely due to thermal storage
following the early January mild spell, snow is an extremely efficient
absorber as well as radiator at infra-red wavelengths. There is a nice
layer of relatively warm low cloud only about a thousand feet above the
ground and I reckon the downward radiation from this, helped by some
contribution from the diffuse solar radiation as well as ground "storage",
is steadily "cooking" my snow cover.

Today's thaw is only a slow one and I reckon the Ashurst Observatory is
good for at least two more days with "Snow Lying". But when a cold spell
finishes, low cloud in a mild SW breeze will thaw snow quicker than
anything apart from heavy warm rain. It's a lot quicker than direct
sunshine, most of which is reflected and which also has to compete with
the snow radiating energy to that part of the sky (nearly all of it) from
which the sun isn't shining.


Interesting, but I was in cloud this morning. Also other icicles elsewhere
are not dripping. So I don't know but I agree with what you say about cloud
cover. The shed roof is felt so I wonder if that retains heat better than
cast iron gutters where the other icicles are?

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

On 19/01/2013 15:55, Eskimo Will wrote:

"Yokel" wrote in message
...
On 19/01/2013 09:03, Eskimo Will wrote:
0850

...

Amazingly still dripping and icicles on shed roof (unheated), there
must have been a lot of heat stored on the surfaces before the snow
as we did not have a frost in this current spell before the snow came.

...



"Radiation thaw"?

We had this situation at Ashurst (New Forest) both yesterday and
today. According to the thermometer in my back garden the air
temperature has remained below freezing both these two days, helped
by the 9 cm of snow we had yesterday. But there has been a
significant thaw on both days - as I write water is dripping from the
branches of trees as snow on these is melting.

Whilst the thawing on the roads etc is very likely due to thermal
storage following the early January mild spell, snow is an extremely
efficient absorber as well as radiator at infra-red wavelengths.
There is a nice layer of relatively warm low cloud only about a
thousand feet above the ground and I reckon the downward radiation
from this, helped by some contribution from the diffuse solar
radiation as well as ground "storage", is steadily "cooking" my snow
cover.

Today's thaw is only a slow one and I reckon the Ashurst Observatory
is good for at least two more days with "Snow Lying". But when a
cold spell finishes, low cloud in a mild SW breeze will thaw snow
quicker than anything apart from heavy warm rain. It's a lot quicker
than direct sunshine, most of which is reflected and which also has
to compete with the snow radiating energy to that part of the sky
(nearly all of it) from which the sun isn't shining.


Interesting, but I was in cloud this morning. Also other icicles
elsewhere are not dripping. So I don't know but I agree with what you
say about cloud cover. The shed roof is felt so I wonder if that
retains heat better than cast iron gutters where the other icicles are?

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

Felt roofs tend to be of fairly solid construction - the felt is
normally tacked onto wooden planking below - so I think you are probably
right. Considering your location, if your shed roof was not of fairly
solid construction I should imagine it would have made its way elsewhere
some time ago.

--
- Yokel -

Yokel posts via a spam-trap account which is not read.

"Yokel" wrote in message
...
On 19/01/2013 15:55, Eskimo Will wrote:

"Yokel" wrote in message
...
On 19/01/2013 09:03, Eskimo Will wrote:
0850

...

Amazingly still dripping and icicles on shed roof (unheated), there
must have been a lot of heat stored on the surfaces before the snow as
we did not have a frost in this current spell before the snow came.

...



"Radiation thaw"?

We had this situation at Ashurst (New Forest) both yesterday and today.
According to the thermometer in my back garden the air temperature has
remained below freezing both these two days, helped by the 9 cm of snow
we had yesterday. But there has been a significant thaw on both days -
as I write water is dripping from the branches of trees as snow on these
is melting.

Whilst the thawing on the roads etc is very likely due to thermal
storage following the early January mild spell, snow is an extremely
efficient absorber as well as radiator at infra-red wavelengths. There
is a nice layer of relatively warm low cloud only about a thousand feet
above the ground and I reckon the downward radiation from this, helped
by some contribution from the diffuse solar radiation as well as ground
"storage", is steadily "cooking" my snow cover.

Today's thaw is only a slow one and I reckon the Ashurst Observatory is
good for at least two more days with "Snow Lying". But when a cold
spell finishes, low cloud in a mild SW breeze will thaw snow quicker
than anything apart from heavy warm rain. It's a lot quicker than
direct sunshine, most of which is reflected and which also has to
compete with the snow radiating energy to that part of the sky (nearly
all of it) from which the sun isn't shining.


Interesting, but I was in cloud this morning. Also other icicles
elsewhere are not dripping. So I don't know but I agree with what you say
about cloud cover. The shed roof is felt so I wonder if that retains heat
better than cast iron gutters where the other icicles are?


Felt roofs tend to be of fairly solid construction - the felt is normally
tacked onto wooden planking below - so I think you are probably right.
Considering your location, if your shed roof was not of fairly solid
construction I should imagine it would have made its way elsewhere some
time ago.


Thanks, I felted it myself about 8 years ago with 3 layers of felt and it is
solid.

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