Today was the 12th consecutive day of snow falling...and looks like tommorow
will be (unlucky??) 13....

Steve.
Stevenage, Herts - 125M asl.

"John Hall" wrote in message
...
In article ,
Phil Layton writes:
A light snow shower this afternoon has recorded the 11th consecutive day
of
snow here. However, I dont think I can record any with snow lying at 09Z,
with only patchy covering (ie. hard surfaces have generally melted) and
amounts not more than 0.5cm.

Martin - could you remind me what % counts as 'snow lying ' ? If one had
90%
grass covered but 10% drive not - does that count ?

I don't know if the definition has changed, but didn't it use to be 50%
cover of the area representative of the station? So if there's a lot
more grass than drive (as one would expect), then your example would
count as a day with snow lying. At Cranleigh, we had 3 consecutive days
last week which just about qualified at 9am, even though the covering
was very thin in each case and had almost all melted by a couple of
hours later.
--
John Hall
"One half of the world cannot understand
the pleasures of the other."
From "Emma" by Jane Austen (1775-1817)

Today was the 12th consecutive day of snow falling...and looks like tommorow
will be (unlucky??) 13....

Steve.
Stevenage, Herts - 125M asl.

"John Hall" wrote in message
...
In article ,
Phil Layton writes:
A light snow shower this afternoon has recorded the 11th consecutive day
of
snow here. However, I dont think I can record any with snow lying at 09Z,
with only patchy covering (ie. hard surfaces have generally melted) and
amounts not more than 0.5cm.

Martin - could you remind me what % counts as 'snow lying ' ? If one had
90%
grass covered but 10% drive not - does that count ?

I don't know if the definition has changed, but didn't it use to be 50%
cover of the area representative of the station? So if there's a lot
more grass than drive (as one would expect), then your example would
count as a day with snow lying. At Cranleigh, we had 3 consecutive days
last week which just about qualified at 9am, even though the covering
was very thin in each case and had almost all melted by a couple of
hours later.
--
John Hall
"One half of the world cannot understand
the pleasures of the other."
From "Emma" by Jane Austen (1775-1817)

Today was the 12th consecutive day of snow falling...and looks like tommorow
will be (unlucky??) 13....

Steve.
Stevenage, Herts - 125M asl.

"John Hall" wrote in message
...
In article ,
Phil Layton writes:
A light snow shower this afternoon has recorded the 11th consecutive day
of
snow here. However, I dont think I can record any with snow lying at 09Z,
with only patchy covering (ie. hard surfaces have generally melted) and
amounts not more than 0.5cm.

Martin - could you remind me what % counts as 'snow lying ' ? If one had
90%
grass covered but 10% drive not - does that count ?

I don't know if the definition has changed, but didn't it use to be 50%
cover of the area representative of the station? So if there's a lot
more grass than drive (as one would expect), then your example would
count as a day with snow lying. At Cranleigh, we had 3 consecutive days
last week which just about qualified at 9am, even though the covering
was very thin in each case and had almost all melted by a couple of
hours later.
--
John Hall
"One half of the world cannot understand
the pleasures of the other."
From "Emma" by Jane Austen (1775-1817)

Phil Layton wrote:
A light snow shower this afternoon has recorded the 11th consecutive
day of
snow here. However, I dont think I can record any with snow lying at
09Z,
with only patchy covering (ie. hard surfaces have generally melted)
and
amounts not more than 0.5cm.

Martin - could you remind me what % counts as 'snow lying ' ? If one
had 90%
grass covered but 10% drive not - does that count ?

Tomorrow looks as though it will be the 12th. Saturday possible late
and
Sunday looks reasonable and may be the last (for a while)

Phil

--

http://homepage.ntlworld.com/phil.layton/meteo.htm

The COL criterion is 50% but it doesn't say 50% of what,
precisely. My own view is that one should look wherever possible at
natural surfaces, eg grass, fields etc. Concrete or tarred surfaces
conduct heat up from the ground rather quickly and are not "natural".
Also snow is removed from them mechanically by traffic or people
walking on it. My "natural surface" for snow cover estimation is the
grass (lawn? joking) in my back garden.
There were 5 days in February with a snow cover here and there
was one again this morning, estimated 4 cm. It's still there and will
be tomorrow morning as well, I reckon.

Tudor Hughes, Warlingham, NE Surrey, 556 ft.

Phil Layton wrote:
A light snow shower this afternoon has recorded the 11th consecutive
day of
snow here. However, I dont think I can record any with snow lying at
09Z,
with only patchy covering (ie. hard surfaces have generally melted)
and
amounts not more than 0.5cm.

Martin - could you remind me what % counts as 'snow lying ' ? If one
had 90%
grass covered but 10% drive not - does that count ?

Tomorrow looks as though it will be the 12th. Saturday possible late
and
Sunday looks reasonable and may be the last (for a while)

Phil

--

http://homepage.ntlworld.com/phil.layton/meteo.htm

The COL criterion is 50% but it doesn't say 50% of what,
precisely. My own view is that one should look wherever possible at
natural surfaces, eg grass, fields etc. Concrete or tarred surfaces
conduct heat up from the ground rather quickly and are not "natural".
Also snow is removed from them mechanically by traffic or people
walking on it. My "natural surface" for snow cover estimation is the
grass (lawn? joking) in my back garden.
There were 5 days in February with a snow cover here and there
was one again this morning, estimated 4 cm. It's still there and will
be tomorrow morning as well, I reckon.

Tudor Hughes, Warlingham, NE Surrey, 556 ft.

Phil Layton wrote:
A light snow shower this afternoon has recorded the 11th consecutive
day of
snow here. However, I dont think I can record any with snow lying at
09Z,
with only patchy covering (ie. hard surfaces have generally melted)
and
amounts not more than 0.5cm.

Martin - could you remind me what % counts as 'snow lying ' ? If one
had 90%
grass covered but 10% drive not - does that count ?

Tomorrow looks as though it will be the 12th. Saturday possible late
and
Sunday looks reasonable and may be the last (for a while)

Phil

--

http://homepage.ntlworld.com/phil.layton/meteo.htm

The COL criterion is 50% but it doesn't say 50% of what,
precisely. My own view is that one should look wherever possible at
natural surfaces, eg grass, fields etc. Concrete or tarred surfaces
conduct heat up from the ground rather quickly and are not "natural".
Also snow is removed from them mechanically by traffic or people
walking on it. My "natural surface" for snow cover estimation is the
grass (lawn? joking) in my back garden.
There were 5 days in February with a snow cover here and there
was one again this morning, estimated 4 cm. It's still there and will
be tomorrow morning as well, I reckon.

Tudor Hughes, Warlingham, NE Surrey, 556 ft.

Phil Layton wrote:
A light snow shower this afternoon has recorded the 11th consecutive
day of
snow here. However, I dont think I can record any with snow lying at
09Z,
with only patchy covering (ie. hard surfaces have generally melted)
and
amounts not more than 0.5cm.

Martin - could you remind me what % counts as 'snow lying ' ? If one
had 90%
grass covered but 10% drive not - does that count ?

Tomorrow looks as though it will be the 12th. Saturday possible late
and
Sunday looks reasonable and may be the last (for a while)

Phil

--

http://homepage.ntlworld.com/phil.layton/meteo.htm

The COL criterion is 50% but it doesn't say 50% of what,
precisely. My own view is that one should look wherever possible at
natural surfaces, eg grass, fields etc. Concrete or tarred surfaces
conduct heat up from the ground rather quickly and are not "natural".
Also snow is removed from them mechanically by traffic or people
walking on it. My "natural surface" for snow cover estimation is the
grass (lawn? joking) in my back garden.
There were 5 days in February with a snow cover here and there
was one again this morning, estimated 4 cm. It's still there and will
be tomorrow morning as well, I reckon.

Tudor Hughes, Warlingham, NE Surrey, 556 ft.

"Tudor Hughes" wrote in message
ps.com...

Phil Layton wrote:
A light snow shower this afternoon has recorded the 11th consecutive
day of
snow here.

... now (4th March), the 12th consecutive day with snow (or variants)
falling.

As to snow lying (to meet definition previously posted), we have had 4
such occasions. The 'Winter Snow Index (Eden) is currently = 09
(see http://homepage.ntlworld.com/booty.w....htm#SnowIndex )

Martin.


--
Martin Rowley: data via -
http://homepage.ntlworld.com/booty.weather/metindex.htm
Bracknell (Wooden Hill/Tawfield), Berkshire
NGR: SU 854 667 Elev: 80m
Lat: 51DEG23MIN30SEC(N): Long: 00DEG46MIN28SEC(W)

"Tudor Hughes" wrote in message
ps.com...

Phil Layton wrote:
A light snow shower this afternoon has recorded the 11th consecutive
day of
snow here.

... now (4th March), the 12th consecutive day with snow (or variants)
falling.

As to snow lying (to meet definition previously posted), we have had 4
such occasions. The 'Winter Snow Index (Eden) is currently = 09
(see http://homepage.ntlworld.com/booty.w....htm#SnowIndex )

Martin.


--
Martin Rowley: data via -
http://homepage.ntlworld.com/booty.weather/metindex.htm
Bracknell (Wooden Hill/Tawfield), Berkshire
NGR: SU 854 667 Elev: 80m
Lat: 51DEG23MIN30SEC(N): Long: 00DEG46MIN28SEC(W)

"Tudor Hughes" wrote in message
ps.com...

Phil Layton wrote:
A light snow shower this afternoon has recorded the 11th consecutive
day of
snow here.

... now (4th March), the 12th consecutive day with snow (or variants)
falling.

As to snow lying (to meet definition previously posted), we have had 4
such occasions. The 'Winter Snow Index (Eden) is currently = 09
(see http://homepage.ntlworld.com/booty.w....htm#SnowIndex )

Martin.


--
Martin Rowley: data via -
http://homepage.ntlworld.com/booty.weather/metindex.htm
Bracknell (Wooden Hill/Tawfield), Berkshire
NGR: SU 854 667 Elev: 80m
Lat: 51DEG23MIN30SEC(N): Long: 00DEG46MIN28SEC(W)