and resilient, well past the height of summer and resilient against a
string of storms, buffetting its west and north flanks in the coming week?

On Friday, September 23, 2016 at 7:55:20 AM UTC+1, N_Cook wrote:
and resilient, well past the height of summer and resilient against a
string of storms, buffetting its west and north flanks in the coming week?

The Azores high is a climatic norm, not just in summer, but much of the year. Looking at Lambs 'The English Climate' the high is centre near the Azores during September, with an average pressure in that refion of 1024mb, much the same as the summer. It's winter / spring when it tends to be well south, absent or a very weak. If it wasn't around in September - that would be unusual

I think that more unusual of late, has been the persistent blocking just to the east that has resulted in the warm month, but also rather cloudy down here. Though fresher air did arrive yesterday, the forecast shows fronts still struggling to push further east than the UK.

Philip E used to produce interesting charts each month showing the average pressure anomaly. COL still does of course.

Graham
Penzance

On 23/09/2016 09:20, Graham Easterling wrote:
On Friday, September 23, 2016 at 7:55:20 AM UTC+1, N_Cook wrote:
and resilient, well past the height of summer and resilient against a
string of storms, buffetting its west and north flanks in the coming week?

The Azores high is a climatic norm, not just in summer, but much of the year. Looking at Lambs 'The English Climate' the high is centre near the Azores during September, with an average pressure in that refion of 1024mb, much the same as the summer. It's winter / spring when it tends to be well south, absent or a very weak. If it wasn't around in September - that would be unusual

I think that more unusual of late, has been the persistent blocking just to the east that has resulted in the warm month, but also rather cloudy down here. Though fresher air did arrive yesterday, the forecast shows fronts still struggling to push further east than the UK.

Philip E used to produce interesting charts each month showing the average pressure anomaly. COL still does of course.

Graham
Penzance


And also the chicken or egg business in relation to the jetstream.
On balance , at the equinoxes (spring one ? autumnal one anyway) with
greatest differential between pole and equator, I could see a strong
,high W-E component , jet holding sway over the Azores High, keeping it
in place.

On Friday, 23 September 2016 07:55:20 UTC+1, N_Cook wrote:
and resilient, well past the height of summer and resilient against a
string of storms,

How else are we supposed to get temperatures down in the Arctic?
There are nothing like a few heat island gathering clouds to represent isobars.