When I look at Met Office Radar, I'm used to seeing rain fronts going East.
So why is this front bucking the trend? TIA

https://www.metoffice.gov.uk/public/...4.00&lat=52.22

Oops, should have written Westward going ..

On Wednesday, 11 April 2018 09:05:07 UTC+1, Bertie Doe wrote:
When I look at Met Office Radar, I'm used to seeing rain fronts going East.
So why is this front bucking the trend? TIA

https://www.metoffice.gov.uk/public/...4.00&lat=52.22

There is a large cyclonic block over Spain presently, with an upper anticyclone over southern Scandinavia. This means that the flow through the troposphere over the UK is from the east at the moment. It is this flow that is steering fronts westwards across the UK. This has been the case since Monday. At the weekend, three things will happen:

- The cyclonic block over Iberia will fill and drift south.
- The upper anticyclone over southern Scandinavia will decline and withdraw eastwards.
- In the Atlantic, a large upper low will move initially eastwards and will then turn to the left to move northwards to the west of Ireland.

The net effect is that a southerly flow will develop across the UK, bringing warm air northwards, and sweeping away the cold and damp easterlies that have effected most of the country. Don't get the sun tan lotion out, though, as the air will be fairly unstable and you can expect to see rain or showers moving south to north at times.

Early next week the general Atlantic flow will veer more southwesterly and strengthen. This will push fronts across the UK from the southwest. The jet stream will be to the northwest out in the Atlantic so the fronts are likely to be weak in the south and there should be plenty of dry and fairly warm weather - albeit not wall-to-wall sunshine. During the second half of the week there are signs of high pressure moving a bit closer to the southern half of the UK, so things should settle down and temperatures should remain above average.

--
Freddie
Ystrad
Rhondda
148m AMSL
http://www.hosiene.co.uk/weather/
https://twitter.com/YstradRhonddaWx for hourly reports (no wind measurement currently)

"Freddie" wrote in message
...
There is a large cyclonic block over Spain presently, with an upper
anticyclone over southern Scandinavia. This means that the flow through
the troposphere over the UK is from the east at the moment. It is this
flow that is steering fronts westwards across the UK. This has been the
case since Monday. At the weekend, three things will happen:

- The cyclonic block over Iberia will fill and drift south.
- The upper anticyclone over southern Scandinavia will decline and withdraw
eastwards.
- In the Atlantic, a large upper low will move initially eastwards and will
then turn to the left to move northwards to the west of Ireland.

The net effect is that a southerly flow will develop across the UK,
bringing warm air northwards, and sweeping away the cold and damp
easterlies that have effected most of the country. Don't get the sun tan
lotion out, though, as the air will be fairly unstable and you can expect
to see rain or showers moving south to north at times.

Early next week the general Atlantic flow will veer more southwesterly and
strengthen. This will push fronts across the UK from the southwest. The
jet stream will be to the northwest out in the Atlantic so the fronts are
likely to be weak in the south and there should be plenty of dry and fairly
warm weather - albeit not wall-to-wall sunshine. During the second half of
the week there are signs of high pressure moving a bit closer to the
southern half of the UK, so things should settle down and temperatures
should remain above average.

Thanks Freddie that's really good info. Warmer but unstable is reasonably
good news for next week thanks - my allotment needs some TLC and get the
seed potatoes in between showers.

On Wednesday, 11 April 2018 12:47:02 UTC+1, Bertie Doe wrote:
"Freddie" wrote in message
...

Warmer but unstable is reasonably
good news for next week thanks - my allotment needs some TLC and get the
seed potatoes in between showers.

I wasn't especially clear in my answer - but I meant it would be unstable at the weekend, but stable next week, hence drier especially later in the week.

--
Freddie
Ystrad
Rhondda
148m AMSL
http://www.hosiene.co.uk/weather/
https://twitter.com/YstradRhonddaWx for hourly reports (no wind measurement currently)