Becoming increasingly confident now that after Monday the snowiest spell of
the winter is about to hit the UK with widespread lowland snow.

The benign cold spell will start to withdraw on Sunday as the high
retrogresses allowing a much colder airmass originating from sub 492 DAM air
near the pole to flood south with sub 522DAM thickness and falling pressure.
Three things will aid snow development:
1. South moving air increasing absolute vorticity forcing ascent and falling
pressure.
2. Decreasing stability forcing convection
3. Northerly jet streak propagating south from Iceland forcing mass ascent
of air on its cold side (over UK).

I have kept quiet till now wanting to see how this was likely to pan out but
now it is becoming clearer when the serious snow will arrive - from Monday
onwards for about a week. Get those snow shovels ready, nobody will be
immune, even lowland coastal SW areas.

Ciao, :-)

Will
--

On Tue, 9 Feb 2010 20:18:04 -0000, "Will Hand"
wrote:

Becoming increasingly confident now that after Monday the snowiest spell of
the winter is about to hit the UK with widespread lowland snow.

The benign cold spell will start to withdraw on Sunday as the high
retrogresses allowing a much colder airmass originating from sub 492 DAM air
near the pole to flood south with sub 522DAM thickness and falling pressure.
Three things will aid snow development:
1. South moving air increasing absolute vorticity forcing ascent and falling
pressure.
2. Decreasing stability forcing convection
3. Northerly jet streak propagating south from Iceland forcing mass ascent
of air on its cold side (over UK).

I have kept quiet till now wanting to see how this was likely to pan out but
now it is becoming clearer when the serious snow will arrive - from Monday
onwards for about a week. Get those snow shovels ready, nobody will be
immune, even lowland coastal SW areas.

Ciao, :-)

Will
Thats me glued to the charts again for a few days !!!!
That will stir the group up a bit lol
Don't want to be throwing my toys out of the pram agani Will (-:

Mark
Southend

On Feb 9, 8:18*pm, "Will Hand" wrote:
Becoming increasingly confident now that after Monday the snowiest spell of
the winter is about to hit the UK with widespread lowland snow.

The benign cold spell will start to withdraw on Sunday as the high
retrogresses allowing a much colder airmass originating from sub 492 DAM air
near the pole to flood south with sub 522DAM thickness and falling pressure.
Three things will aid snow development:
1. South moving air increasing absolute vorticity forcing ascent and falling
pressure.
2. Decreasing stability forcing convection
3. Northerly jet streak propagating south from Iceland forcing mass ascent
of air on its cold side (over UK).

I have kept quiet till now wanting to see how this was likely to pan out but
now it is becoming clearer when the serious snow will arrive - from Monday
onwards for about a week. Get those snow shovels ready, nobody will be
immune, even lowland coastal SW areas.

Ciao, :-)

Will
--

Good luck with it Will!

On 9 Feb, 21:18, "Will Hand" wrote:
Becoming increasingly confident now that after Monday the snowiest spell of
the winter is about to hit the UK with widespread lowland snow.

The benign cold spell will start to withdraw on Sunday as the high
retrogresses allowing a much colder airmass originating from sub 492 DAM air
near the pole to flood south with sub 522DAM thickness and falling pressure.
Three things will aid snow development:
1. South moving air increasing absolute vorticity forcing ascent and falling
pressure.
2. Decreasing stability forcing convection
3. Northerly jet streak propagating south from Iceland forcing mass ascent
of air on its cold side (over UK).

I have kept quiet till now wanting to see how this was likely to pan out but
now it is becoming clearer when the serious snow will arrive - from Monday
onwards for about a week. Get those snow shovels ready, nobody will be
immune, even lowland coastal SW areas.

Ciao, :-)

Will
--

Is it likely to progress further south into France, Will?

CK

"Natsman" wrote in message
...
On 9 Feb, 21:18, "Will Hand" wrote:
Becoming increasingly confident now that after Monday the snowiest spell
of
the winter is about to hit the UK with widespread lowland snow.

The benign cold spell will start to withdraw on Sunday as the high
retrogresses allowing a much colder airmass originating from sub 492 DAM
air
near the pole to flood south with sub 522DAM thickness and falling
pressure.
Three things will aid snow development:
1. South moving air increasing absolute vorticity forcing ascent and
falling
pressure.
2. Decreasing stability forcing convection
3. Northerly jet streak propagating south from Iceland forcing mass
ascent
of air on its cold side (over UK).

I have kept quiet till now wanting to see how this was likely to pan out
but
now it is becoming clearer when the serious snow will arrive - from
Monday
onwards for about a week. Get those snow shovels ready, nobody will be
immune, even lowland coastal SW areas.

Ciao, :-)

Will
--

Is it likely to progress further south into France, Will?


Being a northerly the air will warm up as it gets further south, and becomes
less unstable as well.
Only northern France should be affected.

Will
--

"Dawlish" wrote in message
...
On Feb 9, 8:18 pm, "Will Hand" wrote:
Becoming increasingly confident now that after Monday the snowiest spell
of
the winter is about to hit the UK with widespread lowland snow.

The benign cold spell will start to withdraw on Sunday as the high
retrogresses allowing a much colder airmass originating from sub 492 DAM
air
near the pole to flood south with sub 522DAM thickness and falling
pressure.
Three things will aid snow development:
1. South moving air increasing absolute vorticity forcing ascent and
falling
pressure.
2. Decreasing stability forcing convection
3. Northerly jet streak propagating south from Iceland forcing mass ascent
of air on its cold side (over UK).

I have kept quiet till now wanting to see how this was likely to pan out
but
now it is becoming clearer when the serious snow will arrive - from Monday
onwards for about a week. Get those snow shovels ready, nobody will be
immune, even lowland coastal SW areas.

Ciao, :-)

Will
--

Good luck with it Will!
-------

Cheers Paul, as always there will be some surprises I fancy!

Will
--

Will Hand wrote

I have kept quiet till now wanting to see how this was likely to pan out but
now it is becoming clearer when the serious snow will arrive - from Monday
onwards for about a week. Get those snow shovels ready, nobody will be
immune, even lowland coastal SW areas.

Ciao, :-)

Will
--


Still waiting for a decent snowfall here on the South Wales coast, this
time maybe?
--
Gareth Slee

On 9 Feb, 20:18, "Will Hand" wrote:
Becoming increasingly confident now that after Monday the snowiest spell of
the winter is about to hit the UK with widespread lowland snow.

The benign cold spell will start to withdraw on Sunday as the high
retrogresses allowing a much colder airmass originating from sub 492 DAM air
near the pole to flood south with sub 522DAM thickness and falling pressure.
Three things will aid snow development:
1. South moving air increasing absolute vorticity forcing ascent and falling
pressure.
2. Decreasing stability forcing convection
3. Northerly jet streak propagating south from Iceland forcing mass ascent
of air on its cold side (over UK).

I have kept quiet till now wanting to see how this was likely to pan out but
now it is becoming clearer when the serious snow will arrive - from Monday
onwards for about a week. Get those snow shovels ready, nobody will be
immune, even lowland coastal SW areas.

Ciao, :-)

Will
--

You are a brave man, Will. I don't normally get excited about
northerlies being in the south-east - with such unstable air, however,
is there a good chance of appreciable snowfall even in the south-east.
Paul Bartlett has hinted at an "arctic low" later in the period on his
forecast tonight. When was the last time we got a decent one?

Will Hand wrote:
Becoming increasingly confident now that after Monday the snowiest spell
of the winter is about to hit the UK with widespread lowland snow.

The benign cold spell will start to withdraw on Sunday as the high
retrogresses allowing a much colder airmass originating from sub 492 DAM
air near the pole to flood south with sub 522DAM thickness and falling
pressure. Three things will aid snow development:
1. South moving air increasing absolute vorticity forcing ascent and
falling pressure.
2. Decreasing stability forcing convection
3. Northerly jet streak propagating south from Iceland forcing mass
ascent of air on its cold side (over UK).

I have kept quiet till now wanting to see how this was likely to pan out
but now it is becoming clearer when the serious snow will arrive - from
Monday onwards for about a week. Get those snow shovels ready, nobody
will be immune, even lowland coastal SW areas.

Ciao, :-)

Will
--


Have you been at the Gin cupboard again?

Wow - some forecast. I have things to do next week that will be impacted
by such a scenario - so once again, I hope you are wrong.

Can't you forecast something nice for us?

--
Chris
Swaffham, Norfolk

In article
,
Scott W writes:
On 9 Feb, 20:18, "Will Hand" wrote:
Becoming increasingly confident now that after Monday the snowiest spell of
the winter is about to hit the UK with widespread lowland snow.

The benign cold spell will start to withdraw on Sunday as the high
retrogresses allowing a much colder airmass originating from sub 492 DAM air
near the pole to flood south with sub 522DAM thickness and falling pressure.
Three things will aid snow development:
1. South moving air increasing absolute vorticity forcing ascent and falling
pressure.
2. Decreasing stability forcing convection
3. Northerly jet streak propagating south from Iceland forcing mass ascent
of air on its cold side (over UK).

I have kept quiet till now wanting to see how this was likely to pan out but
now it is becoming clearer when the serious snow will arrive - from Monday
onwards for about a week. Get those snow shovels ready, nobody will be
immune, even lowland coastal SW areas.

Ciao, :-)

Will
--

You are a brave man, Will. I don't normally get excited about
northerlies being in the south-east - with such unstable air, however,
is there a good chance of appreciable snowfall even in the south-east.
Paul Bartlett has hinted at an "arctic low" later in the period on his
forecast tonight. When was the last time we got a decent one?

This looks rather larger in scale than a Polar Low. Today's model
forecast charts show the feature moving down from the north, and then
probably more or less stagnating over the country for quite a few days,
not really going anywhere. The wind over much of the country looks like
falling light, and could be from pretty much any direction, especially
as what's originally a single centre of low pressure seems to fragment
into several.
--
John Hall
"Acting is merely the art of keeping a large group of people
from coughing."
Sir Ralph Richardson (1902-83)