The Weather Outlook

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picturesareme
10 February 2019 12:45:29

 

Yes. 19th January 2019 to be precise. 

That easterly carrot got dangled as close as 144 hours before being snatched away.

A few stalwarts hung around for another 2 or 3 weeks in search of the eastern promise. In their heart of hearts even they probably realised it was another opportunity gone begging.

I sense the mood in here now changing towards Spring mode. 

Originally Posted by: Gusty 

Exactly.. and soon tally will be posting 15 day charts angry/annoyed because they show cold or wet conditions. winklaughing

tallyho_83
10 February 2019 12:52:09

 

Exactly.. and soon tally will be posting 15 day charts angry/annoyed because they show cold or wet conditions. winklaughing

Originally Posted by: picturesareme 

 

Sorry, so I will give up hope and that's sensible - i always thought after a milder than average December and January with no HLB that there would be more chance late winter with a weaker PV, maybe a negative NAo etc to help build HLB but this isn;t to be! 

So if the mood in here is changing towards spring mode - then, am I right in thinking that we are now all in search for spring warmth? If so it's not hard to find it in the current model outputs and should we start a winter is over thread!? - If so this would be the earliest end to winter ever on two, given it's still early Feb.

 


Home Location - Vixen Tor Close, Okehampton, Devon (221m ASL)


Sean Moon

Magical Moon

www.magical-moon.com

Retron
10 February 2019 12:59:23

  am I right in thinking that we are now all in search for spring warmth?

Originally Posted by: tallyho_83 

Nope - I'll be looking for sleet as late as July and as early as September. Hey, it's happened before! (Albeit in the 1880s)

Some snow would be nice before winter's out, but no sign of that in either GEFS or EPS. Another week and if it's still the same, then I'll be writing off another winter.


Leysdown, north Kent
White Meadows
10 February 2019 12:59:52

 

 

Sorry, so I will give up hope and that's sensible - i always thought after a milder than average December and January with no HLB that there would be more chance late winter with a weaker PV, maybe a negative NAo etc to help build HLB but this isn;t to be! 

So if the mood in here is changing towards spring mode - then, am I right in thinking that we are now all in search for spring warmth? If so it's not hard to find it in the current model outputs and should we start a winter is over thread!? - If so this would be the earliest end to winter ever on two, given it's still early Feb.

 

Originally Posted by: tallyho_83 

probably easier to move to Michigan.

Gandalf The White
10 February 2019 13:10:22

 

Nope - I'll be looking for sleet as late as July and as early as September. Hey, it's happened before! (Albeit in the 1880s)

Some snow would be nice before winter's out, but no sign of that in either GEFS or EPS. Another week and if it's still the same, then I'll be writing off another winter.

Originally Posted by: Retron 

LOL.  We'll have to coin the expression "summer is over" if that happens. 

Around a week of benign weather looks nailed on for much of England at least. Beyond that perhaps a more changeable spell but still with average or above temperatures to take us out of winter.

March can bring anything from spring warmth to biting easterlies, as we saw last year, so I'm not writing off cold weather yet, particularly with hints remaining in the long range forecasts.


Location: South Cambridgeshire

130 metres ASL

52.0N 0.1E



PFCSCOTTY
10 February 2019 13:19:00

 

Yes doc I still have a feeling all this talk of spring may be a tad premature ...the met office update is still mainly talking of cold going forward.

Originally Posted by: Weathermac 

exactly ! The LRF has been awful all winter, despite what the models were showing us all on here...so Why believe those muppets now! 

tallyho_83
10 February 2019 13:19:37

 

Nope - I'll be looking for sleet as late as July and as early as September. Hey, it's happened before! (Albeit in the 1880s)

Some snow would be nice before winter's out, but no sign of that in either GEFS or EPS. Another week and if it's still the same, then I'll be writing off another winter.

Originally Posted by: Retron 

yES ME too, because Feb is the time to see blocking appearing in models and cold with snow esp if it doesn't deliver early or mid winter then it usually does occur late winter (Feb!) For the exception of Dec 2010 - most of and if not all of our cold and snowy spells have occurred during the middle to latter stages of winter haven't they!? - Last year is a prime example. 

You make a fair point retrogression! - And let;s hope we do see at least one HP that retrongresses! 

BTW i really do feel that it was the Polar Vortex that shifted southwards into mid western states was the big killer for us - it amplified the jet off the eastern seaboard of USA/Canada and gave us some cyclongenisis/wetter weather. Without that PV/intense bitter cold over the mid western states we would have had the HLB which we were all expecting and what longer range seasonal models were forecasting!


Home Location - Vixen Tor Close, Okehampton, Devon (221m ASL)


Sean Moon

Magical Moon

www.magical-moon.com

Gavin D
10 February 2019 13:21:29

Speaking of spring

 

tallyho_83
10 February 2019 13:25:14

 

LOL.  We'll have to coin the expression "summer is over" if that happens. 

Around a week of benign weather looks nailed on for much of England at least. Beyond that perhaps a more changeable spell but still with average or above temperatures to take us out of winter.

March can bring anything from spring warmth to biting easterlies, as we saw last year, so I'm not writing off cold weather yet, particularly with hints remaining in the long range forecasts.

Originally Posted by: Gandalf The White 

Yes but how accurate have long range forecast been this winter? - We should be well locked into a cold/blocked or a snowy spell now one would have thought but this has failed to materialise!! We need more than hints I think and even then we need cross model agreement within the GFS.


Home Location - Vixen Tor Close, Okehampton, Devon (221m ASL)


Sean Moon

Magical Moon

www.magical-moon.com

four
  • four
  • Advanced Member
10 February 2019 13:34:02

There's often a rather springlike period around Valentine's Day.
It is foolish or even dangerous to assume winter is over, but the heart of it is behind us - and real spring is near.


Caz
  • Caz
  • Advanced Member
10 February 2019 13:37:49

 

Yes but how accurate have long range forecast been this winter? - We should be well locked into a cold/blocked or a snowy spell now one would have thought but this has failed to materialise!! We need more than hints I think and even then we need cross model agreement within the GFS.

Originally Posted by: tallyho_83 

LRF’s haven’t been good Tally but to be fair, they did pick up the recent cold spell generally.  It just wasn’t quite as spectacular as some of us wanted it to be. 


Market Warsop, North Nottinghamshire.

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tallyho_83
10 February 2019 14:25:26

Silence speaks volumes! It's crazy to think that we are in the 2nd week of February now and this is the model output forum yet the last (only comment posted) was at 22:10 and this comment wasn't anything to do with tonight's 18z model output runs. - Just says it all really i.e - how uninspiring the models are tbh! I think a lot of model watching fatigue is not starting to kick in to many members including me! Most if not all of us have seen snow but we haven't really locked into any HLB blocking and there is still no sign of this given the SSW & split PV which caused the reversal of the zonal winds - now 5 or so weeks ago!

I remember typing something similar start of January and someone said to me to be patient you have the whole month of January yet and Feb etc and by that time we would have seen a tropospheric response with HLB around Iceland/Scandi or Greenland etc but now it's the 10th of February for heavens sake. Even winter 2016/2017 we had an easterly around 11th February which brought snow flurries to the south west Saturday morning of 11th Feb 2017 and lasted for 4 hours here in Exeter. Nothing settled it was just flakes of snow and then light snow on and off all morning until the snow became more sleety and followed by ice pellets in the afternoon time!

Back in February 2017 we never have a major SSW, let alone a split in the PV and reversal of zonal winds at 10hpa and 30hpa like this 2018/19 winter and back then we were in a westerly QBO - whilst that easterly back then didn't provide a major cold and snowy spell it still did occur without the help of a SSW/split vortex and zonal winds reversal at 10 and 30hpa and it was noticeable too (snow being one of them!) as you will see in the charts below. This was two years ago this weekend.(NOW!) Anyone remember this in the south?

Anyway, seeing as there is no snow, cold, HLB or easterly to discuss within the next 10 days i thought i would leave you with some below  charts which brought us an easterly two years ago today for 3-4 days between 8th and 12th February 2017:

Commencing on Wednesday night into Thursday we already see the -10c isotherm @ 850hpa approach eastern half of the country: 

 

Notice a trough of LP to our east developing over the N. Sea (lake effect snow) as you can see a small kink in isobars - this brings cloud and outbreaks of light snow and or snow flurries for many parts of southern and eastern England which extending westwards across south western England too!

 

So what Have I /we learn't? A SSW is not necessary to get HLB. It will never guarantee it! Maybe after last years SSW we were really fortunate to see such cross model agreement and not long after as well. SO of course expectations are higher! But next time I see a SSW occur I will not be raising any hopes of HLB despite what the LONG and Shorter range models forecast. They have all been utter rubbish this winter including the Met Office? The question is why? Maybe we can discuss this in further detail when winter is over in 3 weeks time. Would be nice to have a review and to see how things went so wrong in all short and longer range models!?

Anyway! So, my point is that we really don't need a major SSW to produce HLB as it proved in Feb 2017 as well and many other snowy or cold events. I guess I am confused and can't get over the fact that we have had such a major SSW with all the right qualities as alluded to above etc but with no delivery at all anywhere.

For instance, and here is a question to anyone? Would you say last weeks brief colder snap and snowy spell for parts of the south was the tropospheric response/ result of the SSW or not? Anyone? Because surely if it was then where was the blocking? I don't think so IMO we have not seen the effects on the troposphere and the NA0 has been positive all winter. IN MY OPINION - to me, LAST Thursday night/Friday's snowy spell was more to do with fate and cold zonality and an Atlantic low pressure system colliding with colder north to north westerly air mass. BUT there was NO HLB over Greenland or Iceland/Scandinavia at all!

Keen to hear about your thoughts on this? 

 

Originally Posted by: tallyho_83 

Exactly Caz but that colder snap end of last week wasn't the result of the SSW would you say? - because there was no HLB!?

Just re-quoting my above as it was last post on page and some members may have missed it - x2 years ago this weekend between 9th and 12th Feb 2017  we saw blocking as you may remember and yet we never even had a SSW back then to cause this!?

 


Home Location - Vixen Tor Close, Okehampton, Devon (221m ASL)


Sean Moon

Magical Moon

www.magical-moon.com

JACKO4EVER
10 February 2019 14:28:57

 

LOL.  We'll have to coin the expression "summer is over" if that happens. 

Around a week of benign weather looks nailed on for much of England at least. Beyond that perhaps a more changeable spell but still with average or above temperatures to take us out of winter.

March can bring anything from spring warmth to biting easterlies, as we saw last year, so I'm not writing off cold weather yet, particularly with hints remaining in the long range forecasts.

Originally Posted by: Gandalf The White 

we should coin the phrase “Britain’s perpetual Autumn never ends”

LeedsLad123
10 February 2019 14:44:57
Next week looks positively spring-like with temperatures in the double digits with sunshine. Certainly no complaints from me.
Whitkirk, Leeds - 85m ASL.
David M Porter
10 February 2019 15:22:04

LRF’s haven’t been good Tally but to be fair, they did pick up the recent cold spell generally.  It just wasn’t quite as spectacular as some of us wanted it to be. 

Originally Posted by: Caz 

The thing that has stood out for me about this winter's model output generally is that hasn't just been charts for far-off FI which have led us up the proverbial garden path. Sometimes even charts for 5-6 days ahead have been subject to change and exact details have not been pinned down until very close to the time of the event. The snowfalls that some parts of southern England experienced just over a week ago were a good example of this.

The problem I think we had going into this winter is that expectations were raised considerably early on by two things. Firstly, there were the MetO predictions from late November of notable cold before the festive season or soon after it. Secondly, there was the coming of the SSW event which began just before Xmas. I cannot say for sure as I do not work for the MetO, but it could have been the anticipated effects of the SSW on which their predictions of notable cold were based. Added to this could well have been that because there was a SSW late on last winter which delivered for us big time, some assumed that something similar would happen again this season. As others have said in the past, while SSW events can and do increase the chances of us experiencing notable cold, they are not a guarantee of this. Furthermore, while these events do help, they are not a pre-requisite for us; the severe spells of December '09/January '10 and late November/December 2010 are both cases in point.


Lenzie, Glasgow

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

Caz
  • Caz
  • Advanced Member
10 February 2019 15:39:32

 

Exactly Caz but that colder snap end of last week wasn't the result of the SSW would you say? - because there was no HLB!?

Just re-quoting my above as it was last post on page and some members may have missed it - x2 years ago this weekend between 9th and 12th Feb 2017  we saw blocking as you may remember and yet we never even had a SSW back then to cause this!?

 

Originally Posted by: tallyho_83 

Which just goes to show that our weather depends on so many variables and why it’s so difficult to forecast.  It’s highly unlikely we’d ever get exactly the same scenario twice, that is: every variable being the same as a previous weather event.  But there are more ways than one to skin a cat!  Eeeuw!  

[edit]  Yes David I agree, expectations have been high because we’ve had a taste of the possibilities!  Hence, disappointment is high too! 


Market Warsop, North Nottinghamshire.

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ARTzeman
10 February 2019 16:27:31

Met Office Outlook has us down for mild wet & windy for the few last days in February,  Puts CET right out.




Some people walk in the rain.

Others just get wet.

I Just Blow my horn or trumpet

marco 79
10 February 2019 16:36:42
Just for fun... the pinnacle of the the 79 winter was just about to be unleashed 40 years ago...peaked in the 15th....On that day I recall massive drifts 8ft plus.. and the extended half term Feb holiday....Now that would have been some great model watching !!....

http://www.wetterzentrale.de/reanalysis.php?jaar=1979&maand=2&dag=10&uur=1200&var=2&map=1&model=noaa 


Home : Mid Leicestershire ...135m ASL
tallyho_83
10 February 2019 17:00:37

 

The thing that has stood out for me about this winter's model output generally is that hasn't just been charts for far-off FI which have led us up the proverbial garden path. Sometimes even charts for 5-6 days ahead have been subject to change and exact details have not been pinned down until very close to the time of the event. The snowfalls that some parts of southern England experienced just over a week ago were a good example of this.

The problem I think we had going into this winter is that expectations were raised considerably early on by two things. Firstly, there were the MetO predictions from late November of notable cold before the festive season or soon after it. Secondly, there was the coming of the SSW event which began just before Xmas. I cannot say for sure as I do not work for the MetO, but it could have been the anticipated effects of the SSW on which their predictions of notable cold were based. Added to this could well have been that because there was a SSW late on last winter which delivered for us big time, some assumed that something similar would happen again this season. As others have said in the past, while SSW events can and do increase the chances of us experiencing notable cold, they are not a guarantee of this. Furthermore, while these events do help, they are not a pre-requisite for us; the severe spells of December '09/January '10 and late November/December 2010 are both cases in point.

Originally Posted by: David M Porter 

Exactly but you also forgot to mention the fact that this winter 18/19 we are at solar minimum!? That alone would have raised expectations remarkably as it would normally increase the chance of northern blocking and cold etc!


Home Location - Vixen Tor Close, Okehampton, Devon (221m ASL)


Sean Moon

Magical Moon

www.magical-moon.com

DPower
10 February 2019 17:07:19
One potent lesson to take from this winter I think is that in the world of amateur meteorology their are no such things as experts.Having been on several forums over the winter months the term experts ( not on this forum I admit) is used regularly ie... Netweather, 33andrain and Americanwx. This winter has shredded many of those ego's. The so called teleconnection experts have had a mare of a season which is no bad thing. Anyone sceptical of their theories have been met with conceit and arrogance. No one knows why the MJO or SSW has not delivered, many including myself have theories but that is all they are theories. Even the Met have been back tracking with their medium to long range forecasts since early December. The models, glosea, mogreps, gfs and ecm offer a guide to the outlook and that is all which is far better than some amateur who thinks he is better at understanding the complex intricacies of the weather.
doctormog
10 February 2019 17:08:38
A couple of points. Firstly we are just entering the solar minimum and secondly I am not sure there is any definite correlation between a solar minimum and northern blocking. If the UK weather was as straightforward as solar minimum = cold winter or SSW = guaranteed cold then forecasting would be so so much easier.

Anyway on the 12z charts so far, much of the coming week looks pleasant with anticyclonic conditions dominating.


tallyho_83
10 February 2019 17:48:33

Just for fun: p 07

 

GFS 12z ensembles for London: Quite a lot of scatter with many mild ensembles and the mean above the 30 year average.


Home Location - Vixen Tor Close, Okehampton, Devon (221m ASL)


Sean Moon

Magical Moon

www.magical-moon.com

tallyho_83
10 February 2019 17:50:32

A couple of points. Firstly we are just entering the solar minimum and secondly I am not sure there is any definite correlation between a solar minimum and northern blocking. If the UK weather was as straightforward as solar minimum = cold winter or SSW = guaranteed cold then forecasting would be so so much easier.

Anyway on the 12z charts so far, much of the coming week looks pleasant with anticyclonic conditions dominating.

Originally Posted by: doctormog 

I thought we were well into solar minimum? Also winters 08/09 and 09/10 were during solar minimum and were largely blocked as well. 


Home Location - Vixen Tor Close, Okehampton, Devon (221m ASL)


Sean Moon

Magical Moon

www.magical-moon.com

Hippydave
10 February 2019 17:51:47

GFS 12z shows a bit more amplification in the mid-term, leading to a short lived chilly/cold easterly feed for the far south or south east. Thereafter mild but not excessively mild uppers move back as the HP sinks - if there's any sunshine it wouldn't feel bad at all in light winds but if it's grey it'll just be pretty 'meh' for the time of year.

I'd imagine there will be what seems like the usual FI scatter suggesting things are reasonably poised between outcomes.

Whilst we've got a ways to go yet for me the interesting thing about this winter if the longer range pattern/signals versus shorter range signals/forcing.

If you take a look at the GFS ens in deep FI there's been a persistent signal for a while now of HP dominating and a decent cluster which get said HP to a decent position. Despite that when we get nearer to the time that signal gets shunted back and HP is either no where near us or just not in the right position for cold.

The MetO mid to long term models have also clearly and persistently been signalling for a decent chance of a colder set up too.

 


Home: Tunbridge Wells

Work: Tonbridge

doctormog
10 February 2019 18:06:16

 

I thought we were well into solar minimum? Also winters 08/09 and 09/10 were during solar minimum and were largely blocked as well. 

Originally Posted by: tallyho_83 

We are probably at the equivalent stage to 2007/8 when compared with the last cycle minimum 

https://upload.wikimedia.org/wikipedia/commons/0/01/Solar_cycle_24_sunspot_number_progression_and_prediction.gif

Although I will emphasise again that I’m not sure there is a direct correlation between SC minimum and northern blocking.

 


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