The Weather Outlook

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Ally Pally Snowman
20 January 2019 10:25:44

Looking like some height rises in Greenland in about a week . This looks like the next Chase. Although Tuesday morning could be interesting but wrong side of marginal at the moment.


Bishop's Stortford 85m ASL.
Gooner
20 January 2019 10:29:05

Could be a belter - good blocking to the West 


Remember anything after T120 is really Just For Fun



Marcus

Banbury

North Oxfordshire

378 feet A S L



Joe Bloggs
20 January 2019 10:30:39

This may come back to bite me on the arse, but I’m more convinced by these height rises around Greenland around T+168 onwards than I ever was about this potential easterly. 

I think there is potential for a very wintry end of the month associated with a Greenland/Atlantic High. These outlooks tend to be more robust and reliable than a Scandinavian High easterly. 

Lots to keep an eye on, and despite yesterday’s disappointment, the outlook remains cool to cold, potentially very cold later.  

The MetO raw output is also now picking up the potential for sleet or snow here on Tuesday/Wednesday - trust me that never happens unless there is a fair old chance. 

warrenb
20 January 2019 10:36:13
As I have said, I haven't been interested in the phantom easterly, the fun starts in February
Shropshire
20 January 2019 10:38:14

This may come back to bite me on the arse, but I’m more convinced by these height rises around Greenland around T+168 onwards than I ever was about this potential easterly. 

I think there is potential for a very wintry end of the month associated with a Greenland/Atlantic High. These outlooks tend to be more robust and reliable than a Scandinavian High easterly. 

Lots to keep an eye on, and despite yesterday’s disappointment, the outlook remains cool to cold, potentially very cold later.  

The MetO raw output is also now picking up the potential for sleet or snow here on Tuesday/Wednesday - trust me that never happens unless there is a fair old chance. 

Originally Posted by: Joe Bloggs 

I don't really see that at all, I was in Manchester last January for what looked a better 'cold zonal' event but saw nothing more rain and hail.

Of course as for events beyond day 7 , this is the classic evolution being shown by the GFS but we are reliant on getting enough of a break in the jet to deliver and of course nearer the time features are picked up and it often results in a toppler at best.

 


From December 27th 2020, zonality will be banned from mixing with the UK. We appreciate that this may come as a shock to younger people and old Uncle Barty. This ban will last for a minimum of ten days.
Gooner
20 January 2019 10:40:03

Cant complain 


Remember anything after T120 is really Just For Fun



Marcus

Banbury

North Oxfordshire

378 feet A S L



Phil24
20 January 2019 10:40:52

Based on today's output I'd be surprised if Exeter don't ditch this week's easterly. We'll see!

Originally Posted by: Brian Gaze 

 

To be honest with you, I am surprised that you think that way.  We have many discussions on a daily basis that revolve around potential based on the output of charts data from various sources.  Most of the time just about everything beyond 5 days practically never materialises as it was originally shown.  Great for an overall idea as to the possibility of a particular trend, but regards specifics, you will be wasting your time.  Even forecast beyond 3 and 5 days are fraught with uncertainty most of the time, but, do tend (in my opinion) to have a far better chance of verifying.

Take a look at any forecast from the Met and they never really call a change in weather in a specific way until much closer the time, and even then they always leave wiggle room.  Just take a look at their forecast overall from the beginning of Jan, in a roundabout way they have been spot on, but never specific unless its within the 3 to 5 day period.

My view on your calls is to stop reacting to changes like the changes themselves, this is the third (in my view) major change from TWO in the last 7 days.  

The trend is still towards progressively colder weather over a period of time with a better than average chance of the weather turning severe with an easterly influence at sometime soon.  With an extremely good opportunity for those favouring cold and snow to get their whishes, particularly north of Birmingham over the next week.

 

Chunky Pea
20 January 2019 10:42:26

 

Didn't the NAO go negative at the end of last winter when the Beast arrived here?

Originally Posted by: David M Porter 

Yes.

https://climexp.knmi.nl/data/icpc_nao_daily.dat

 


Patrick,

East Galway, Ireland.

Bertwhistle
20 January 2019 10:43:36

 

Yes, clearly this isn't going to happen and will surely be changed later today.

 

 

Originally Posted by: Shropshire 

You said as much yesterday.

Just so we can compare later, here's a reminder of yesterday afternoon's:

UK Outlook for Thursday 24 Jan 2019 to Saturday 2 Feb 2019:

Thursday and Friday will see a very cold north to north-easterly airstream bringing sunshine and showers, the showers giving rain or snow and most frequent in the north and northeast. It looks breezy on Thursday perhaps with coastal gales in the south and east, although winds should ease on Friday. Widespread locally severe night frosts are also likely.

 


Bertie, Itchen Valley.

Retire while you can still press the 'retire now' button.

Gooner
20 January 2019 10:45:34

With ECM and GFS not a million miles away at 240 - this at 300 ( yes, yes FI) I still the E word might still be mentioned 


Remember anything after T120 is really Just For Fun



Marcus

Banbury

North Oxfordshire

378 feet A S L



some faraway beach
20 January 2019 10:45:40

This may come back to bite me on the arse, but I’m more convinced by these height rises around Greenland around T+168 onwards than I ever was about this potential easterly. 

I think there is potential for a very wintry end of the month associated with a Greenland/Atlantic High. These outlooks tend to be more robust and reliable than a Scandinavian High easterly. 

Lots to keep an eye on, and despite yesterday’s disappointment, the outlook remains cool to cold, potentially very cold later.  

The MetO raw output is also now picking up the potential for sleet or snow here on Tuesday/Wednesday - trust me that never happens unless there is a fair old chance. 

Originally Posted by: Joe Bloggs 

I agree with that. Scandi highs seem almost like emergent phenomena. They come and go in model world, with nothing particularly driving them. 

But to form a Greenland high you need something powerful and specific - warm-air advection in the right place in the Atlantic. And if the models are suggesting that, then it's a trend that's much harder to derail.

I can't remember his name, but there was a poster on here years ago (his avatar was a crawling insect) who once wrote: "Yellow over Greenland - that's when I get wood." I know what he means.


2 miles west of Taunton, 32 m asl, where "milder air moving in from the west" becomes SNOWMAGEDDON.

Well, two or three times a decade it does, anyway.

jhall
20 January 2019 10:46:23

Cant complain 

Originally Posted by: Gooner 

You're not trying hard enough. Complaining is the raison d'etre for this forum. 


Cranleigh, Surrey
David M Porter
20 January 2019 10:46:43

 

Yes.

https://climexp.knmi.nl/data/icpc_nao_daily.dat

 

Originally Posted by: Chunky Pea 

Thanks CP.

Note for Ian: The NAO can still go negative at times these days, so it is not right to say it "just never does".


Lenzie, Glasgow

"A body of men holding themselves accountable to nobody ought not to be trusted by anybody." – Thomas Paine

Joe Bloggs
20 January 2019 10:47:17

 

I don't really see that at all, I was in Manchester last January for what looked a better 'cold zonal' event but saw nothing more rain and hail.

Of course as for events beyond day 7 , this is the classic evolution being shown by the GFS but we are reliant on getting enough of a break in the jet to deliver and of course nearer the time features are picked up and it often results in a toppler at best.

 

Originally Posted by: Shropshire 

Trust me, I am more than aware of how fickle it is for snow round these parts, so you can definitely spare me the lecture there. :D 

The fact that the MetO show snow for here is a good sign for more prone areas, like where you live.

Also Jan 2015 didn’t look great for snow on a mediocre chilly westerly, and we got pummelled. 

Low pressure, chilly air, and lightish westerly winds can sometimes be more effective than a screaming NW’ly. 

Gooner
20 January 2019 10:50:01

The Kent contingent will be happy with the GFS 6z 


Remember anything after T120 is really Just For Fun



Marcus

Banbury

North Oxfordshire

378 feet A S L



Chunky Pea
20 January 2019 10:58:46

 

Thanks CP.

Note for Ian: The NAO can still go negative at times these days, so it is not right to say it "just never does".

Originally Posted by: David M Porter 

Just as an aside David, the most positive and negative daily NAO value for the month of Jan in that series, both occurred on the same date! that is, January 2nd. 


Patrick,

East Galway, Ireland.

Whether Idle
20 January 2019 10:59:44

The Kent contingent will be happy with the GFS 6z 

Originally Posted by: Gooner 

Yes Marcus.  A pleasing run out into deepest FI at the inception of the new month.  A dream scenario that has become vanishingly rare (except in FI ). The BftE last year was a reminder of what is possible. For me, this was always more likely to be a back loaded winter.  Good news is, I have my first air-frost (that wasn't a transient midnight dipper) of the autumn and winter season.  The clock is ticking and the trend for some deep snowy cold at t300 needs to be ushered in to t120, intact.  Not much to ask.


Dover, 5m asl. Half a mile from the south coast.
Retron
20 January 2019 11:05:33
The ECM ensembles this morning tell the tale of the past 24 hours well: a few stragglers keep an easterly chill, the remainder show a milder blip over the weekend. Into the following week, there's pretty much no change from last week's output: the 850 mean hovers around -5C, the 2M temperatures hover around 3C by day (for London).

It remains to be seen whether there'll be another "blip" to come, or whether this time the cold will be able to persist for more than a couple of days.

https://weather.us/forecast/2643743-london/ensemble/euro/temperature 


Leysdown, north Kent
Chunky Pea
20 January 2019 11:07:33

Good news is, I have my first air-frost (that wasn't a transient midnight dipper) of the autumn and winter season.  

Originally Posted by: Whether Idle 

Congrats! like me, you are now in the 'One Air Frost this Winter So Far' club. 


Patrick,

East Galway, Ireland.

Gary L
20 January 2019 11:10:57

This may come back to bite me on the arse, but I’m more convinced by these height rises around Greenland around T+168 onwards than I ever was about this potential easterly. 

I think there is potential for a very wintry end of the month associated with a Greenland/Atlantic High. These outlooks tend to be more robust and reliable than a Scandinavian High easterly. 

Lots to keep an eye on, and despite yesterday’s disappointment, the outlook remains cool to cold, potentially very cold later.  

The MetO raw output is also now picking up the potential for sleet or snow here on Tuesday/Wednesday - trust me that never happens unless there is a fair old chance. 

Originally Posted by: Joe Bloggs 

Rain to snow event on the raw output for my area. 

Maunder Minimum
20 January 2019 11:11:54

Cant complain 

Originally Posted by: Gooner 

I can complain - stellar charts for 10 days hence keep appearing - they are meaningless. Show me a chart like that at t+120 and I shall start to get excited. This whole  winter has been a demoralising episode of chasing rainbows at 10 days - I am not going to get suckered that way again.

 


New world order coming.
Retron
20 January 2019 11:28:29

I can complain - stellar charts for 10 days hence keep appearing - they are meaningless. Show me a chart like that at t+120 and I shall start to get excited.

Originally Posted by: Maunder Minimum 

Will 144 do?

http://www.meteociel.fr/modeles/gefs_cartes.php?ech=144&code=18&mode=1&carte=

(Admittedly, it has next to no chance of coming off but it's a ray of light amongst the Atlantic dross!)


Leysdown, north Kent
Shropshire
20 January 2019 11:29:20

 

Thanks CP.

Note for Ian: The NAO can still go negative at times these days, so it is not right to say it "just never does".

Originally Posted by: David M Porter 

I said several winters over the last 30  years - not last year.


From December 27th 2020, zonality will be banned from mixing with the UK. We appreciate that this may come as a shock to younger people and old Uncle Barty. This ban will last for a minimum of ten days.
Solar Cycles
20 January 2019 11:31:04
Even though the outlook looks encouraging from +144 beyond until its at +72 or less then I think I’ll tske it with a pinch of salt after this weeks debacle.
Polar Low
20 January 2019 11:31:32

But you can’t stop looking, not even a tablet to take for it 😄🤩

 

I can complain - stellar charts for 10 days hence keep appearing - they are meaningless. Show me a chart like that at t+120 and I shall start to get excited. This whole  winter has been a demoralising episode of chasing rainbows at 10 days - I am not going to get suckered that way again.

 

Originally Posted by: Maunder Minimum 

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