bluearmy
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Hunt For Cold: Model Discussion - Heading Into Christmas
bluearmy replied to Paul's topic in Spring Weather Discussion
Yes - that’s right Stewart - ending 42 days (not beginning!) -
Hunt For Cold: Model Discussion - Heading Into Christmas
bluearmy replied to Paul's topic in Spring Weather Discussion
If I had to make a punt on first few days of jan then the evolution of the gfsp fi would be in the ball park - could take another amplification to get there compared to this run ........... -
Hunt For Cold: Model Discussion - Heading Into Christmas
bluearmy replied to Paul's topic in Spring Weather Discussion
So it’s a good thing according to that sample of data ....... approx 75% below normal temps for mid feb to end March according to that -
Hunt For Cold: Model Discussion - Heading Into Christmas
bluearmy replied to Paul's topic in Spring Weather Discussion
Just looks to me like we have a mid lat high around us in a holding pattern and at some point there is a drop off of the low heights to the north so that the next amplification off the ESB raises our ridge - to our west, north or northeast is the question ..... still confused as to why people get so hung up on conditions on the 25th December ..........it’s just another day meteorologically speaking ....... -
Hunt For Cold: Model Discussion - Heading Into Christmas
bluearmy replied to Paul's topic in Spring Weather Discussion
Depends if you believe the gefs ........ infact, most of the models haven’t covered themselves in glory with the MJO forecasts this last month ...... fwiw, the bias corrected gefs stalls in reasonable amplification phase 5 as is the current cross model trend -
the same arhu - this mornings Berlin is yesterday’s noon run .... I posted it from another site anyway, the 00z run is on the same page, a little less amplified and the split at 10hpa delayed around 36 hours. Again, splitting from the top rather than the bottom (this a major difference between the ec and gfs which splits upwards and obviously promotes uncertainty )
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I posted this yesterday Arhu? anyway, yesterday’s ec op is confirmed technical ssw by day 10 (as expected ) and the heights at the very top are crazy split at that timescale
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Hunt For Cold: Model Discussion - Heading Into Christmas
bluearmy replied to Paul's topic in Spring Weather Discussion
Five equally supported clusters to day 8 MWB ... trop modelling maybe struggling a bit .... want to see the slowing zonal winds on that ec op run to see how they downwell .....could be an explanation -
Hunt For Cold: Model Discussion - Heading Into Christmas
bluearmy replied to Paul's topic in Spring Weather Discussion
just means previous ops are still on the table ..... the 00z suite had no clusters past day 10 and the spread at day 10 means that there was too much variation post day 10 for the model to show only six defined clusters -
Hunt For Cold: Model Discussion - Heading Into Christmas
bluearmy replied to Paul's topic in Spring Weather Discussion
The ecm spreads show the previous ops with the systems heading west to east are still evident in the eps -
Hunt For Cold: Model Discussion - Heading Into Christmas
bluearmy replied to Paul's topic in Spring Weather Discussion
Actually I see that as part of the jigsaw .... the Russian trough slowly backing west and undercutting the block with the Atlantic trough also coming east below .... the extended eps showing this solution again ....it’s not quick I’m afraid but hopefully the surface and lower layers can cool under a stagnant block for a week/ 10 days -
Hunt For Cold: Model Discussion - Heading Into Christmas
bluearmy replied to Paul's topic in Spring Weather Discussion
Do you think it will verify below the gfs at the relevant timescale ? indeed - worth checking out my post in the strat thread ..... -
Hot off the press ..... ec op 12z is different .... split at 10hpa begins at T210 and this downwells to 30hpa by day 10 Note the placement of that ridging ....... I wonder If that’s where it will settle in the trop a week or so later .....
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Hunt For Cold: Model Discussion - Heading Into Christmas
bluearmy replied to Paul's topic in Spring Weather Discussion
Strat split on the 12z not as gung ho as the 06z but still there -
Hunt For Cold: Model Discussion - Heading Into Christmas
bluearmy replied to Paul's topic in Spring Weather Discussion
Gfs upstream looking more relaxed by .......... -
Not sure if I’m right but I believe the 06z suite was the first gefs run to get the mean reversal down to 30hpa - New Year’s Day
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Hunt For Cold: Model Discussion - Heading Into Christmas
bluearmy replied to Paul's topic in Spring Weather Discussion
That’s cos it’s for Boxing Day -
Hunt For Cold: Model Discussion - Heading Into Christmas
bluearmy replied to Paul's topic in Spring Weather Discussion
We can’t see the clusters on the ec 46 - perhaps some week 3/4 clusters are getting the block a little further nw than the mean - it was over Greenland by week 4. the run jumps around a lot, day by day so I expect those clusters are required to make sense of it Exeter aren’t seeing a cold flow before the end of week 2 which is when gfs and gefs run to .... any frigid charts showing on current output are not in line with their thinking which is a block in our vicinity -
Hunt For Cold: Model Discussion - Heading Into Christmas
bluearmy replied to Paul's topic in Spring Weather Discussion
Latter part not available for free afaik -
Hunt For Cold: Model Discussion - Heading Into Christmas
bluearmy replied to Paul's topic in Spring Weather Discussion
He is preparing for jan/feb as he is nearly 500 feet asl..... -
Hunt For Cold: Model Discussion - Heading Into Christmas
bluearmy replied to Paul's topic in Spring Weather Discussion
It wasn’t underwhelming Karlos - people were simply not comparing apples and apples - didn’t help that the week 3 set up was completely different to previous runs with the nw European block weeks 4/5 through 7 continue to look like the weatherbell anomoly chart I posted last week - think of a classic late seventies winter set up ....... -
Yesterday’s ec op 12z was 3.97m/s at day 10. This mornings run continues to sink and stretch the spv so I expect tomorrows Berlin update will show a technical ssw by day 10
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Hunt For Cold: Model Discussion - Heading Into Christmas
bluearmy replied to Paul's topic in Spring Weather Discussion
Previous ec 46 runs (whilst being different week 3 and 4) didn’t bring the cold until after week 4 so this renewal is more progressive with the cold by brining it in weeks 3 /4 -
Hunt For Cold: Model Discussion - Heading Into Christmas
bluearmy replied to Paul's topic in Spring Weather Discussion
Still weeks five and six to come out remember that previous runs had troughing just to our west weeks two thru four so to see the block replacing that low anomoly for weeks three and four shows that the model isn’t to be relied upon ! -
Hunt For Cold: Model Discussion - Heading Into Christmas
bluearmy replied to Paul's topic in Spring Weather Discussion
That week 4 low anomoly is broad and does looks a bit west based neg NAO ..... i guess the pattern does show that the heights have to retrogress which means we see a cold flow as the block heads nw and the low anomolys could be cold enough for us i guess the fact that it’s showing HLB mid jan onwards is continuity from previous output .......