Snow and a dangler?

[Len]

The Met Office forecasts show  convergence over SW England on Wednesday and Thursday. The classic Irish Sea/Pembrokeshire dangler.

Could this mean snow showers for Cornwall and Devon?

It would have to be cold enough.

More likely to be  rain with daytime max of 8C.

Len Wood

Wembury

[Ashley haworth-roberts]

With a shower northerly exact wind direction likely to affect whether showers go down to north-facing west coasts or north facing east coasts, or both, in addition to the northern half of Scotland. The current warnings (for earlier) suggest north and east most likely candidates for wintriness but Pembrokeshire and Devon could perhaps get a bit of snow on high ground by Thurs (Devon had a bit at the same time last year I think).

[Graham Easterling]

The dangler is predicted to be over Cornwall rather than Devon though, and intense danglers tend to be just a few miles wide. The SST is still so high (currently 13.4C at Perranporth), rain / hail I suspect, unless (possibly) you live on Brown Willy! 

Interesting though.

Still 11C here in Penzance this afternoon. A good 2C warmer than it was in Truro - based on my car thermometer was I was driving back. 

Now back in November 2010, snow down to beach level. http://penzanceweather.atwebpages.com/ExtremeNov2010-2.pdf

That really was eceptional, the SST was around 5C lower than iscurrently the case.

Graham

Penzance 

[Graham Easterling]

I see Penzance is in the yellow warning area for snow & ice. Looking at the temperature forecast for Wednesday it ranges from 5-7C, before dipping to 4C overnight Wednesday / Thursday.

Graham

Penzance

[Len]

Yes, the chance of snow showers down here in the Southwest in a winter northerly are small unless you are above 250 m.

The long sea track is critical. We have a much higher likelihood in a biting easterly from the continent.

We have just had rain showers drifting by today.

No doubt gritters will be out though as Met Office is forecasting 0C and -2C for Wednesday and Thursday nights

here in Wembury.

Len

[Ashley haworth-roberts]

Slightly surprised to see there's an amber snow warning that's been issued today - for north eastern England, mainly around the North York Moors, during a large part of Thursday. At present all the Scottish warnings remain yellow.

[Ashley haworth-roberts]

If a potent Pembroke and Penzance dangler develops, with heavy showers and hill snow, I imagine the particularly warm seas will play their part.

(21) Liam Dutton on X: "The first Pembrokeshire Dangler of the season is expected tomorrow. Never heard of the Pembrokeshire Dangler? It's a thing, and you can find out more about it here - https://t.co/vo3xnFc92Z https://t.co/qxA778IGI6" / X

(21) Derek Brockway - weatherman on X: "It's been a while but the Pembrokeshire Dangler will return on Wednesday! A stream of heavy, prolonged showers over the Irish Sea will impact Pembrokeshire and Cornwall with hail, sleet and snow and a risk of thunder. Strong north winds on the coast will make it feel very cold. https://t.co/ddamZh9Mry" / X

[Len]

I have always maintained that the so called 'Pembokeshire Dangler' has little to do with Pembrokeshire.

It has more to do with 'funneling/convergence' of cold air in winter over a relatively warm sea.

It should be called 'Irish Sea Dangler'.

Sea temperature and convergence today make it appear to dangle from some point just north of Anglesey.

 

The same happens in a cold easterly from the continent in winter down the English channel.

I have been trying to think up a fun name for this but clearly it is not a dangler.

Perhaps 'English Channel Wangler' as it appears to be heading west.

Len

Wembury

[Graham Easterling]

I rather agree Len, it does normally start near Anglesea, though the Pembroke and Lands End peninsulas tend to obstruct the flow & can intensify it. Couple of other examples

This one's a pretty weak affair so far, and I'm currently (12:25) right underneath it. 

I see the yellow snow and ice warning is now in force for even for the coast of Cornwall. It's currently 6C at Cardinham up on Bodmin moor! 7 or 8C right on the north coast. The coldest spots are, as you would expect, well away from the north coast, fairly high, under the dangler. So Culdrose 5C. Normally right under a dangler the temperature dips a lot, hasn't  so far on this occasion, the precipitation is too light. Stayed aound 6C in Penzance, even in the showers. 

Still, I've heeded the warning, put the snow chains on the car, decided not to risk walking on any slopes. Surprised the schools haven't shut, but if we get a temporary cover of hail . . . 

The most noticeable thing here is the wind, it's bitter, as we do say in Cornwall.

Graham

Penzance