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Posts posted by coldwinter
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New JMA weeklies seem to go the way GP was alluding to earlier, notice how solid that Euro trough is also
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2 minutes ago, Catacol said:
Fits the forecast mould....but uncertainty is creeping in now with so much NWP evidence sticking to a relatively strong trough and ineffective blocking.
Hmmmm - but for now - "stay on target!"
Met Office outlook now mentioning the 'small chance of colder temps with snow 'perhaps to lower levels for a time in north east', so there must be a little support in house for the GFSP it would seem. Good stuff
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1 minute ago, Summer Sun said:
I was having a look myself last night for that but couldn't find an ens
Can view the mean here https://www.tropicaltidbits.com/analysis/models/?model=gem-ens&region=nhem&pkg=z500a&runtime=2018111712&fh=156
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Not sure i agree with @Quicksilver1989 post above, sure cold spilling down into the eastern states can fire up the jet, but it can easily be part of a negative NAO pattern it just means the jet stream has to be amplified, plus the temperature graphic is based on the 6z GFS, which even then most certainly doesn't show anything zonal and still shows a weak and fragmented jet with intermittent ridging northwards. The key thing as Steve said is the jet to be amplified enough early doors coming off the states to pump our Greenland high up. Still lots of uncertainty!
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3 minutes ago, feb1991blizzard said:
I dont like those view's of the ECM clusters, im not usually that good at judging them, but are they not a significant upgrade on the 0z suite
It's 53% in favour of the ECM OPS way, 47% go GFS way day 8 on. So still uncertain as to whether we can get the deep cold in.
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3 minutes ago, bluearmy said:
Of course the gfsp is the best verfiryjng fi operational product at the moment ....
A very blocked 6z from the p, wouldnt surprise me if the 12z normal GFS goes backed to a more blocked regime, the overreaction on single OP runs is laughable on here, you'd think we were staring down the barrel of rampant zonality! Nobody is claiming a big freeze just yet, how can people be disappointed at heights trying to build to our NE repeatedly and further attacks on the PV is baffling to me!
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3 minutes ago, blizzard81 said:
Any news on the ec46?
Week 2 has the high centred central southern Norway, week 3 has mid Atlantic high. Would like to see a little more of an undercut on on the week 2 but we can’t grumble for the time of year!
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1 minute ago, northwestsnow said:
Thats the problem when you get a big block poorly orientated - it can lead to very wet weather for the UK as the fronts grind to a halt against the blocking.
But i agree 6Z looks a bit better..
That was what happened in 2009. Noone is looking for a beasterly set up this early no? We want to see blocking to our north east to drive wave activity and then potentially it is there to back west later in the month. New JMA weekles support heights to the NE like the 6z. Plenty of model volatility should be expected with any building if heights over Scandinavia
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19 minutes ago, MR EXTREMES said:
-4.39 latest qbo so just easterly can we get atmosphere to play ball until we reach full westerly qbo.
http://www.cpc.ncep.noaa.gov/data/indices/qbo.u30.index
and
-18.67 for the u50 index anomaly http://www.cpc.ncep.noaa.gov/data/indices/qbo.u50.index
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24 minutes ago, tight isobar said:
Yup....i realise.there the 18z..from the run previous!..
So i highlighted/posted for tonights compare.....18z...pattern/diverse.
That ensemble chart is 5 days old matey
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9 minutes ago, CreweCold said:
I feel a key requisite this year will be a Canadian warming early December.
Unfortunately Canadian warmings are as rare as hens teeth! Key thing for me to watch is the development of the scandi high, and fro pressure to remain high in scandi/Siberia to get some wave activity going and keeping the vortex in check.
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11 hours ago, feb1991blizzard said:
Yes, Its unlikely that there would be enough cold pooling on the continent to bring us a March 2018 scenario at that time but if we can get that ridging into the pole consistently throughout November, you would think at some point in the following month, a brutal spell might well be around the corner.
Could i have the link for the 46 dayer? i have lost mine.
Thank you.
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1 minute ago, bobbydog said:
Yes. It's technically the October SAI. However, an early start to the season can only help things along
I'd rather there was little there until October, as the more there before then means there is less scope for larger gains. Snow cover is obviously linked with the pressure patterns, that's what is worth watching as we head through October. Be interesting to see how much blocking there is over the Taymyr peninsular and the barents/kara seas through October as Mr Murr has alluded too.
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26 minutes ago, bobbydog said:
Not in China though...
Well below 60°N (think S.A.I. ...)
Correct me if i'm wrong but the SAI correlation if for the last week of Sept at the earliest no?
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2 minutes ago, winterof79 said:
Some newbies could be forgiven for thinking the clusters are everything before long. It seems to be the new thing. Are they better than the means?
The clusters give context to the mean
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Model output discussion - 7th January onwards
in Forecast Model Discussion
Posted
Fair to say the GFSP much closer to the UKMO and ECM than the GFS