View Single Post
  #2   Report Post  
Old February 9th 10, 07:24 PM posted to uk.sci.weather
Mark Chamberlain (Southend) Mark Chamberlain (Southend) is offline
external usenet poster
 
First recorded activity by Weather-Banter: Dec 2009
Posts: 115
Default Widespread heavy snow next week from 15th

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