In message , Eskimo Will
writes
Going to get some at home for sure with that polar low running down the
Tamar (T+48 FAX).
But look at the forecast for high Dartmoor

http://www.metoffice...Time=1484352000
-3C, heavy snow and strong winds.

I feel a walk high up coming on on Saturday (just 40 minutes drive to
the really deep snow), now where did I put those pesky snow shoes .....
(and shovel for the drifts) :-)

Will

Potentially a very interesting day tomorrow in SE England. The
computerised hourly forecast for Cranleigh on the MO website shows rain
setting in around 11am, and becoming heavy during the afternoon, with
temperatures around 5C. In late afternoon the wind veers towards the NW
and the temperature starts to fall, so that we have:

17:00 3C heavy sleet WNW 16mph gusting 32
18:00 0C heavy snow NW 24mph gusting 48
19:00 0C heavy snow NW 20mph gusting 39
20:00 1C slight snow WNW 16 mph gusting 32

After that the weather improves, though by late evening the temperature
is down to -1C, implying very icy conditions whether or not the snow
lies (which if that forecast is totally accurate it would do, of
course).

I realise it's odds against it panning out quite like that, giving the
degree of uncertainty that the (human) forecasters admit to, but even a
close approximation could give a substantial amount of drifting snow,
especially over the Downs and Chilterns.

I'm not very good at interpreting TAFs, but as far as I can make out
those for Heathrow and Gatwick tell a story that's pretty much
consistent with that computerised Cranleigh forecast (I'm pretty much
halfway between the two airports).
--
John Hall
"One can certainly imagine the myriad of uses
for a hand-held iguana maker"
Hobbes (the tiger, not the philosopher!)