Showers in north as air mass cools
After finally seeing the back of that old cold front I never expected to see showers following on so quickly behind during this afternoon.
Upper Air
Where has all today’s upper cloud come from? Part II
For those are vaguely interested by the high cloud that invaded the skies across the UK yesterday, I did finally manage to track down a Watnall (Nottingham) ascent. As far as I can see the auto-sonde ascent at 11 UTC didn’t happen, or perhaps it did, only for...
Where has all today’s upper cloud come from?
I can’t quite understand where a lot of today’s upper cloud seems to have come from across the UK. The laser cloud base recorders [LCBR] don’t seem to be able to pick it up and none of the SYNOP observations from across the country are reporting it. I...
A fast moving ribbon of air high up in the atmosphere
In any other year this would have been a named storm in it’s own right, the only reason it isn’t is because its north and not south of the border.
200 knot jet
A more detailed look at the midnight ascent from Yarmouth Nova Scotia where the wind was blowing 201 knots (231 mph) at 250 hPa.
Jet pushes upper cloud south and surface pressure towards 1050 hPa
It’s not surprising that the high cloud has spread south so rapidly in the last few hours as there was a 150 knot northerly jet at midnight down across the country.
Jetstream shield
I don’t know the exact technical term for this ‘shield’ of cloud is, other than calling it jet stream cirrus but I know its a harbinger of rapid development. I quite like shield of cloud that I’ve coined, who knows perhaps it’ll catch on.
Inversion rises and sharpens rapidly at the Cairnwell
Can these observation from Cairnwell be believed?
