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Winter 2018/2019 - General Discussion

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  • Registered Users Posts: 242 ✭✭Golfwidow


    Is MT Cranium going to post his annual winter predictions or have I perhaps missed that post? Unfortunately, I'm not well up on a lot of the meteorological terminology that's being used by some of the posters here but MT uses language that I can usually understand!!! No offence intended towards any posters - we're all on different levels. I've the greatest respect to all contributors here - sharing a wealth of information and knowledge. I just wish I could understand more!!


  • Registered Users Posts: 13,509 ✭✭✭✭sryanbruen


    Golfwidow wrote: »
    Is MT Cranium going to post his annual winter predictions or have I perhaps missed that post? Unfortunately, I'm not well up on a lot of the meteorological terminology that's being used by some of the posters here but MT uses language that I can usually understand!!! No offence intended towards any posters - we're all on different levels. I've the greatest respect to all contributors here - sharing a wealth of information and knowledge. I just wish I could understand more!!

    He posted them over on Netweather a few weeks ago, linked below. He replied with the following comment to this thread full of excitement on his intriguing forecast.
    sryanbruen wrote: »
    Thanks, but as I mentioned in the net-weather discussion, it seemed like a lot of people were expecting a very warm summer after the March blocking episodes, so I didn't feel like the summer forecast was anything extraordinary. Like (the sports of) diving or gymnastics, I guess there's a degree of difficulty factor in play, this winter (early) forecast certainly has a higher degree of difficulty, and I may want to revise the outlook around late November if I don't see good early signs of the set-up required.

    As a sign of how unusual the synoptics are, the degree of cold in central regions of North America has been getting a lot of public attention, and yesterday Denver (not New Denver BC where I now live) -- Colorado -- had temperatures below freezing all day and 3 inches of snow. That was very early for such an event, especially the below freezing part of it. And even down in Phoenix, the temperature anomaly has switched from a large positive in September to a very large negative by their standards, days have been in the 70s instead of the normal low 90s F most of this month. This large cold pool has now worked its way southeast to the Atlantic coastal regions too, in modified form. One thing I want to assess in November is how strong the jet appears to be coming around the base of this persistent trough and what portion of it is heading north instead of northeast. This may help in working out whether we're looking at some sort of late 2010 all-before-New Years sort of response or something a bit more prolonged that may not start up in such a dramatic fashion. I think most people here would take either/or on that one. :)


  • Registered Users Posts: 242 ✭✭Golfwidow


    Thanks for that!


  • Registered Users Posts: 600 ✭✭✭Captain Snow


    Great Info for what happens after Christmas day and into the 1st week of January 2019.

    Information from the CFS. Remember it does change. But can pick up a trend.




  • Registered Users Posts: 3,133 ✭✭✭Rebelbrowser


    Saw that on CFS when doing the Christmas weather thread.

    In fact it has -11 uppers into SE England even by the end of this month!


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  • Registered Users Posts: 1,493 ✭✭✭Reckless Abandonment


    Nice looking January on the CFS. But we'll its the CFS so it probably wrong then right then wrong ..


  • Registered Users Posts: 1,493 ✭✭✭Reckless Abandonment


    Nice looking January on the CFS. But we'll its the CFS so it probably wrong then right then wrong ..


  • Registered Users Posts: 1,493 ✭✭✭Reckless Abandonment


    Nice looking January on the CFS. But we'll its the CFS so it probably wrong then right then wrong ..


  • Registered Users Posts: 13,509 ✭✭✭✭sryanbruen


    The prospects are on for 2018-19 to be an El Nino Winter but unsure of the strength whether weak or moderate. Weak has a better chance than moderate but we can't rule out the chance of a moderate El Nino this year. As a result, we must consider moderate El Nino years as an analogue too.

    The 500mb height anomaly reanalysis overall for these Winters shows a blocking area of high pressure to the southwest of Greenland backing into Canada and to the north of Scandinavia. There is a deep area of below average heights over us the main centre is just to the south of England. This reanalysis indicates a mixed Winter pattern giving off month to month variation, let's have a look at each month below.

    df4d06_0e978234137f4a83920a299853b7354c~mv2.png

    The Decembers look wet but maybe close to average temperatures as it looks like a very northwesterly month. There is a large block of high pressure up to Scandinavia and over North America indicating that there would be opportunities for decent snow and cold at times during the month but overall, an unsettled month.

    df4d06_02c3f06351d047ffacb45e5e479c5005~mv2.png

    The Januaries look extremely cold and snowy. This is probably the best chart you can get for cold and snow. December 2010 had an identical chart to this one for January. Huge northern blocking over Greenland with below average heights over Europe and just to the south of the UK. The mean wind direction is a northeasterly.

    df4d06_b9254a1d45fc445eae19f0a3ff06ba9e~mv2.png

    The Februaries look like a knife edge between mild, wet and windy or cold and snowy as a west based negative NAO tries to establish.

    df4d06_5c084da85874453698d91dd9fb296e65~mv2.png

    Moderate El Niño Winters overall seem mixed with an unsettled December, a very cold and snowy January whilst February is either mild and wet or cold and snowy.


  • Registered Users Posts: 692 ✭✭✭bazlers


    Sorry this has probably been asked a thousand times, but is there a link to MT Craniums winter forecast 2010, which I presume would have been late November of that year. I can only find his daily forecasts from that time.
    Thanks.


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  • Registered Users Posts: 692 ✭✭✭bazlers


    Found it 15/11/2010

    Time to confirm what I've been hinting at here and in the daily forecast thread.

    My long-range seasonal outlook calls for colder than normal temperatures for most of the winter months, and higher than normal snowall amounts.

    Expect periods of very cold weather to develop late November and through much of December as blocking high pressure becomes well established over the Baltic regions. While the Atlantic will occasionally push back and bring milder, wet conditions, the frequency of east winds and cold combined with a storm track close to the south coast of Ireland and into the southern half of the U.K. should make for frequent snowfalls in many parts of Ireland and the U.K. Predicting temperatures to average 1.5 to 2.0 C below normal in December and some stretches possibly sub-freezing, with snowfall likely before Christmas making for a white Christmas for many.

    The January outlook calls for this cold to deepen for part of the month before a brief reversal indicated by some of the research index values. Therefore the month may feature some major winter storms mid-month as this pattern reversal begins. Despite the milder end, the month is likely to continue to average below normal by about the same amount as December, 1-2 C and possibly more.

    February was less conclusive from the research index values but unless the January reversal is highly energetic, could see the blocking redeveloping and leading to a colder than normal February as well.

    Given the strength of cold in the outlook and the dependence of mean winter temperatures on snow cover near the lower end of the spectrum, one cannot rule out a sort of near-extreme or even extreme outcome, since mean monthly temperatures below 2.0 tend to promote continuous snow cover and therefore a fairly easy slide down to sub-freezing values from the same air masses as are present for 2-3 C.

    In other words, I'm predicting a cold winter with lots of snow, that could become an epic winter. Stay tuned.

    One other detail to note, the storm frequency from my research should be on a fairly well-modulated 3.5-day cycle with stronger events every seven days or so (this is not exact so it won't work out to the same day every week). The stronger events are likely to produce their share of slow-moving but deep "Channel" or French lows promoting a strong east wind and outbreaks of snow. One of the better scenarios I foresee for snowfall comes with the December full moon and "northern max" event of 21 December. This is bound to produce an intense storm over western Europe and I am giving something like 2-1 odds for this to be a cold weather storm event with at least some snow or sleet in the mix for Ireland, whereas if the pattern happens to be stuck on mild then, look for a very mild and windy sort of event followed by much colder weather.

    In general, through the mid-winter period, the stormy episodes will fall at full and new moons, and approximately mid-way between them with a second set of high-energy peaks. This pattern will continue into late winter but with the secondary energy peaks decoupling from the primary (full/new) this gives a more frequent distribution of storms that, if coupled with a cold pattern in February, could lead to a steady parade of disturbances around the southern flanks of blocking high pressure to the north and northeast.

    Anyone interested in a more detailed forecast could find one later today on Net-weather posted by my research associate and friend, Blast from the Past as he is known to the weather forum world. That will be UK-centric but after all, the winter patterns are bound to be quite similar, and the general theme appears to be cold winning out over mild again this winter.

    Looks like this pattern could be setting up gradually later this month, and I would not be surprised if there is some snow even in late November.

    ��❄️is it even possible to get a better forecast. although he believes this year could be one of the coldest of the last 30 to 50 years. ����


  • Registered Users Posts: 13,509 ✭✭✭✭sryanbruen


    UK Met Office:
    UK Outlook for Sunday 18 Nov 2018 to Sunday 2 Dec 2018:
    By mid-November there is significant uncertainty, but there are weak signals that the UK will have transitioned to more settled conditions; with weather systems deflected away from the UK and most likely confined to parts of the northwest. These longer settled spells are likely to support an increased probability of overnight frost and fog across much of the UK which could be slow to clear given the time of year. Temperatures are more likely to be near to or above average at first, but mild conditions are probably going to become more short-lived with an increasing likelihood of below average temperatures through the end of November and into the start of December with precipitation probably turning wintry at times.


  • Registered Users Posts: 1,985 ✭✭✭Artane2002


    sryanbruen wrote: »
    UK Met Office:

    When I saw that, I was considering taking a break from model watching because this model flip-flop is a bit much for me... especially the ECM. But once you start model watching it's hard to get out :P


  • Registered Users Posts: 14,328 ✭✭✭✭M.T. Cranium


    Well that 2010 forecast was not really a true long-range forecast at that date with respect to the epic cold and snow just over the horizon, as it was probably starting to show up as a strong probability on model runs. How that compared to any thoughts I published earlier is not made clear in the quotes and I don't really remember now. All I can say about the method being used is that it has shown some tendency to be better than random guesswork over about ten years of seasonal forecasting but a lot of work remains to be done before I get really that excited about it, and that work is more or less never-ending as the computer files are getting so unwieldy in recent years that I have my hands full just reorganizing the data bases. I've probably had a few clunkers along the way too, not one of those weather guru types who attempts to bask in some false atmosphere of infallibility (there's nobody out there who can rightfully claim that privilege, in my estimation.

    Changing subject entirely, I have a list of the coldest third of winters in the 360 year period of record for the CET. This would include all winters that managed an average for DJF of 3.2 or lower. This list shows them all and separates the really cold (2.0 or lower) from the rather cold.

    I arranged them for their first appearance here by lunar declination cycles, just to give anyone interested in that some actual data. But we can rearrange these in any sort of framework you like, or you can by block copying the numbers. Note, this table has either the cold winters (the year number refers to JF and the D is previous year), or blanks if they were too mild. So if you're looking for any particular winter, you'll need to count blanks from a nearby cold winter. Also, this table is arranged so that each winter only appears once.

    (note: in the table below, "start" is a research-based astronomical date for the maximum declination values or year zero as some call it, in the 18.6 year cycle. Hence, the first winter that follows is the same year for cases that have a .0 ending such as 1913.0, otherwise it would be the next winter and that is placed at an appropriate distance into the table, the winters following a .8 date are the next group, followed by those following .6, .4 and finally .2 cases). Winter 1659 is judged to be non-cold from its Jan-Feb mean of 3.5. Years from 1653 to 1658 are shown as "no data" and every other winter is either cold and numerically identified or blanked out).


    COLD WINTERS (CET) vs LUNAR DECLINATION CYCLE
    _____________________________________________


    start _____ 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18

    1652.6 ....... no --- data
    __ 60 __ __ 63 __ 65 __ 67 __ __ 70 __

    1671.2 .........72 __ 74 75 __ 77 78 79 80 81 __ __ 84 85 __ __ __ 89

    1689.8 .....__ 91 92 __ 94 95 __ 97 98 __ __ 01 __ __ __ __ __ __ __

    1708.4 .......09 10 __ __ __ __ __ 16 __ 18 __ __ __ __ 23 __ __ 26

    1727.0 ....__ __ 29 __ 31 __ __ __ __ __ __ __ __ 40 41 42 __ 44 45

    1745.6 ......46 __ 48 __ __ 51 52 __ __ 55 __ 57 58 __ 60 __ __ 63 __

    1764.2 ........65 66 67 68 __ __ 71 72 __ 74 __ 76 77 78 __ 80 __ __

    1782.8 .....83 84 85 86 __ __ 89 __ __ 92 __ __ 95 __ 97 __ 99 00 __

    1801.4 ....... 02 03 __ 05 __ __ 08 __ __ 11 __ 13 14 __ 16 __ 18 __

    1820.0 ....20 __ __ 23 __ __ __ 27 __ __ 30 31 __ __ __ __ __ __ 38

    1838.6 ......__ __ 41 42 __ __ 45 __ 47 __ __ __ __ __ __ 54 55 __ __

    1857.2 ........__ __ 60 __ __ __ __ 65 __ __ __ __ 70 71 __ __ __ 75

    1875.8 .....__ __ __ 79 80 81 __ __ __ __ 86 87 88 __ __ 91 __ 93 __

    1894.4 .......95 __ __ __ __ 00 __ 02 __ __ __ __ __ __ __ __ __ __

    1913.0 ....__ __ __ __ 17 __ __ __ __ __ __ __ __ __ __ __ 29 __ __

    1931.6 ......__ __ 34 __ 36 __ __ __ 40 41 42 __ __ __ __ 47 __ __ __

    1950.2 ........51 __ __ __ __ 56 __ __ __ __ __ __ 63 __ __ __ __ __

    1968.8 .....69 __ __ __ __ __ __ __ __ __ 79 __ __ 82 __ __ 85 86 __

    1987.4 .......__ __ __ 91 __ __ __ __ 96 __ __ __ __ __ __ __ __ __

    2006.0 ....__ __ __ __ 10 11 __ __ __ __ __ __ __ (19?)

    ________________________________________________________

    This is the distribution vs the 8.86 year lunar perigee cycle

    Year of NP _01_02_03_04_05_06_07_08_09

    1654.8 ____no data__ __ 60 __ __ 63
    1663.6 .....__ 65 __ 67 __ __ 70 __ 72
    1672.5 .....__ 74 75 __ 77 78 79 80 81
    1681.4 ......__ __ 84 85 __ __ __ 89 __
    1690.3 ......91 92 __ 94 95 __ 97 98 __
    1699.1 ........__ 01 __ __ __ __ __ __
    1708.0 ..__ 09 10 __ __ __ __ __ 16
    1716.9 ...__ 18 __ __ __ __ 23 __ __
    1725.8 ...26 __ __ 29 __ 31 __ __ __
    1734.6 ....__ __ __ __ __ 40 41 42 __
    1743.5 ....44 45 46 __ 48 __ __ 51 52
    1752.4 .....__ __ 55 __ 57 58 __ 60 __
    1761.3 .....__ 63 __ 65 66 67 68 __ __
    1770.1 ......71 72 __ 74 __ 76 77 78
    1779.0 ..__ 80 __ __ 83 84 85 86 __
    1787.9 ...__ 89 __ __ 92 __ __ 95 __
    1796.8 ... 97 __ 99 00 __ 02 03 __ 05
    1805.6 ....__ __ 08 __ __ 11 __ 13 14
    1814.5 ....__ 16 __ 18 __ 20 __ __ 23
    1823.4 .....__ __ __ 27 __ __ 30 31 __
    1832.3 .....__ __ __ __ __ 38 __ __ 41
    1841.1 ......42 __ __ 45 __ 47 __ __
    1850.0 ..__ __ __ __ 54 55 __ __ __
    1858.9 ...__ 60 __ __ __ __ 65 __ __
    1867.8 ...__ __ 70 71 __ __ __ 75 __
    1876.6 ....__ __ 79 80 81 __ __ __ __
    1885.5 ....86 87 88 __ __ 91 __ 93 __
    1894.4 .....95 __ __ __ __ 00 __ 02 __
    1903.3 .....__ __ __ __ __ __ __ __ __
    1912.1 ......__ __ __ __ 17 __ __ __
    1921.0 ..__ __ __ __ __ __ __ __ 29
    1929.9 ...__ __ __ __ 34 __ 36 __ __
    1938.8 ...__ 40 41 42 __ __ __ __ 47
    1947.6 ....__ __ __ 51 __ __ __ __ 56
    1956.5 ....__ __ __ __ __ __ 63 __ __
    1965.4 ..... __ __ __ 69 __ __ __ __ __
    1974.3 .....__ __ __ __ 79 __ __ 82 __
    1983.1 ...... __ 85 86 __ __ __ __ 91
    1992.0 ..__ __ __ __ 96 __ __ __ __
    2000.9 ...__ __ __ __ __ __ __ __ __
    2009.8 ...10 11 __ __ __ __ __ __ __
    2018.7 .... (19?)
    ____________________________________________

    I will attempt some sort of analysis of these lunar profiles after staring at them for a while. It may just be entirely random.

    (NP in the 8.86-year perigee cycle is the timing for perigee to coincide with northern max ... we just passed that point in the past month or two, and so the winter of 2019 will be just after the "NP" ... the perigee is well timed to coincide with the late January full moon in 2019. )

    I would expect a peak of greater frequency of cold winters around years 4-5 when perigee is close to the southern maximum for declination, in other words, any southward pull for the Moon on the atmosphere should be greatest then. However, a secondary maximum might be expected at the northern max perigee on account of the pull then favouring blocking. Years in between with more of an equatorial perigee might be more likely to go zonal. But the significance of this may be slight.

    If you have any cycles you want to investigate, just be cautious about preserving the order of winters as it's easy to lose or to add a few blanks in reordering the lines.


  • Registered Users Posts: 14,328 ✭✭✭✭M.T. Cranium


    There's another natural cycle that I have mentioned in previous discussions, a nearly 20-year interval that seems important in modulation of the sunspot cycle. Jupiter takes 19.85 years to overtake Saturn, so there are alignments every two decades, and in between, they are at opposite sides of the solar system. Even back into the historical record reconstructed by Schove, it's fairly evident that this 20-year cycle is running in sync with active solar periods. When the Sun gets relatively quiet, the sunspot cycle slows down and the period is closer to 12 years than 10.

    I've been trying to develop a working theory of why this might be a cause and effect relationship during active periods, why it switches off apparently during weak solar epochs (like the Maunder, Dalton and late 19th century, and again with the 2013 peak), and how to predict which phase the working relationship will be in. The best periodicity I could find over 17 centuries of Schove's reconstruction and modern data would be about 205 years, but it's certainly far from an exact repeating cycle.

    Anyway, to show the relationship to these Jupiter-Saturn alignments, I have placed the cold winters in a 20-year framework. The alignment dates begin with years ending in 3 just as the period starts, then fall back to 2 through the Maunder and early 18th century, to 1 for the late 18th and all of the 19th centuries into the first half of the 20th, and more recently, years ending in zero. However, it's not quite a straight alignment because these two planets have eccentric orbits. The period is longer between some alignments than others, the variation being almost one year. So treat that as approximate, but the chart below shows the alignments at their start and end positions slanting down the table to the left slightly.

    The J-S alignments are same side of Sun, the J=S alignments are opposite sides ...

    Alignments ________J-S_______________________J=S____________

    start __ 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20

    1659 .... __ 60 __ __ 63 __ 65 __ 67 __ __ 70 __ 72 __ 74 75 __ 77 78
    1679 .... 79 80 81 __ __ 84 85 __ __ __ 89 __ 91 92 __ 94 95 __ 97 98
    1699 .... __ __ 01 __ __ __ __ __ __ __ 09 10 __ __ __ __ __ 16 __ 18
    1719 .... __ __ __ __ 23 __ __ 26 __ __ 29 __ 31 __ __ __ __ __ __ __
    1739 .... __ 40 41 42 __ 44 45 46 __ 48 __ __ 51 52 __ __ 55 __ 57 58
    1759 .... __ 60 __ __ 63 __ 65 66 67 68 __ __ 71 72 __ 74 __ 76 77 78
    1779 .... __ 80 __ __ 83 84 85 86 __ __ 89 __ __ 92 __ __ 95 __ 97 __
    1799 .... 99 00 __ 02 03 __ 05 __ __ 08 __ __ 11 __ 13 14 __ 16 __ 18
    1819 .... __ 20 __ __ 23 __ __ __ 27 __ __ 30 31 __ __ __ __ __ __ 38
    1839 .... __ __ 41 42 __ __ 45 __ 47 __ __ __ __ __ __ 54 55 __ __ __
    1859 .... __ 60 __ __ __ __ 65 __ __ __ __ 70 71 __ __ __ 75 __ __ __
    1879 .... 79 80 81 __ __ __ __ 86 87 88 __ __ 91 __ 93 __ 95 __ __ __
    1899 .... __ 00 __ 02 __ __ __ __ __ __ __ __ __ __ __ __ __ __ 17 __
    1919 .... __ __ __ __ __ __ __ __ __ __ 29 __ __ __ __ 34 __ 36 __ __
    1939 .... __ 40 41 42 __ __ __ __ 47 __ __ __ 51 __ __ __ __ 56 __ __
    1959 .... __ __ __ __ 63 __ __ __ __ __ 69 __ __ __ __ __ __ __ __ __
    1979 .... 79 __ __ 82 __ __ 85 86 __ __ __ __ 91 __ __ __ __ 96 __ __
    1999 .... __ __ __ __ __ __ __ __ __ __ __ 10 11 __ __ __ __ __ __ __
    2019 ... (19?)
    J-S
    J=S


    This is the same chart with three years removed to align the Jupiter-Saturn periods:

    Alignments ________J-S_______________________J=S____________

    start __ 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20

    1659 .... __ 60 __ __ 63 __ 65 __ 67 __ __ 70 __ 72 __ 74 75 __ 77 78
    1679 .... 79 80 81 __ __ 84 85 __ __ __ 89 __ 91 92 __ 94 95 __ 97 98
    1699 .... __ __ 01 __ __ __ __ __ __ __ 09 10 __ __ __ __ __ 16 __
    1718 .... 18 __ __ __ __ 23 __ __ 26 __ __ 29 __ 31 __ __ __ __ __ __
    1738 .... __ __ 40 41 42 __ 44 45 46 __ 48 __ __ 51 52 __ __ 55 __ 57
    1758 .... 58 __ 60 __ __ 63 __ 65 66 67 68 __ __ 71 72 __ 74 __ 76 77
    1778 .... 78 __ 80 __ __ 83 84 85 86 __ __ 89 __ __ 92 __ __ 95 __ 97
    1798 .... __ 99 00 __ 02 03 __ 05 __ __ 08 __ __ 11 __ 13 14 __ 16 __
    1818 .... 18 __ 20 __ __ 23 __ __ __ 27 __ __ 30 31 __ __ __ __ __ __
    1838 .... 38 __ __ 41 42 __ __ 45 __ 47 __ __ __ __ __ __ 54 55 __
    1857 .... __ __ __ 60 __ __ __ __ 65 __ __ __ __ 70 71 __ __ __ 75 __
    1877 .... __ __ 79 80 81 __ __ __ __ 86 87 88 __ __ 91 __ 93 __ 95 __
    1897 .... __ __ __ 00 __ 02 __ __ __ __ __ __ __ __ __ __ __ __ __ __
    1917 .... 17 __ __ __ __ __ __ __ __ __ __ __ 29 __ __ __ __ 34 __ 36
    1937 .... __ __ __ 40 41 42 __ __ __ __ 47 __ __ __ 51 __ __ __ __ 56
    1957 .... __ __ __ __ __ __ 63 __ __ __ __ __ 69 __ __ __ __ __ __ __
    1977 .... __ __ 79 __ __ 82 __ __ 85 86 __ __ __ __ 91 __ __ __ __ 96
    1996 .... __ __ __ __ __ __ __ __ __ __ __ __ __ 10 11 __ __ __ __ __
    2016 .... __ __ (19?)
    J-S
    J=S

    With the winters now aligned in columns of similar period to the 19.85 year effect, we can count up the numbers of cold winters in each of the twenty columns ... this is the count ...

    _______ 07 03 09 06 06 09 05 05 07 05 07 04 04 09 08 03 06 05 06 08 _____

    Adding the first and second groups of ten to get a count vs any alignment, we find

    _______ 07 03 09 06 06 09 05 05 07 05
    _______ 07 04 04 09 08 03 06 05 06 08

    _______ 14 07 13 15 14 12 11 10 13 13

    This seems to indicate a weak periodicity of five years with minima around second and seventh-eighth years which correspond to two years before and three years after alignments. Those are quite close to when solar activity peaks and then a secondary maximum is often observed and my working hypothesis is that Jupiter is "exciting" the solar wind by aligning with sectors of Saturn's interaction with the Sun that are radially curved on either side of the straight alignment. This is in somewhat good agreement with independent "solar weather" studies that do not always consider Jupiter and Saturn in their frameworks. Some researchers have been looking at that from different research perspectives.

    In any case, this last graph of the series shows where the solar peaks have occurred relative to the 20-year period (using the second better aligned version) ... no peaks are shown for the Maunder although Schove gave some rather meaningless very weak "peaks" but the known peaks of activity since 1705 (the last weak peak of the Maunder) are reliable. Where more than one year is shown, that is a stronger peak with several active years.

    This is the same chart with three years removed to align the Jupiter-Saturn periods:

    Alignments ________J-S_______________________J=S____________

    start __ 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20

    1659 .... __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __
    1679 .... __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __
    1699 .... __ __ __ __ __ __ 05 __ __ __ __ __ __ __ __ __ __ __ __
    1718 .... 18 __ __ __ __ __ __ __ __ 27 __ __ __ __ __ __ __ __ __ __
    1738 .... 38 __ __ __ __ __ __ __ __ __ __ 49 50 __ __ __ __ __ __ __
    1758 .... __ __ 60 61 __ __ __ __ __ __ 68 69 70 __ __ __ __ __ __ 77
    1778 .... 78 79 80 __ __ __ __ __ 86 87 88 89 __ __ __ __ __ __ __ __
    1798 .... __ __ __ 01 02 03 04 __ __ __ __ __ __ __ __ __ __ 15 16 __
    1818 .... __ __ __ __ __ __ __ __ __ __ __ 29 30 __ __ __ __ __ __ 37
    1838 .... 38 39 __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __
    1857 .... __ __ 59 60 61 __ __ __ __ __ __ __ __ 70 71 __ __ __ __ __
    1877 .... __ __ __ __ __ __ 83 84 __ __ __ __ __ __ __ __ 93 94 __ __
    1897 .... __ __ __ __ __ __ __ __ 05 06 07 __ __ __ __ __ __ __ __ __
    1917 .... 17 18 __ __ __ __ __ __ __ __ 27 28 29 __ __ __ __ __ __ 36
    1937 .... 37 38 __ __ __ __ __ __ __ __ 47 48 49 __ __ __ __ __ __ 56
    1957 .... 57 58 59 __ __ __ __ __ __ __ __ 68 69 70 __ __ __ __ __ __
    1977 .... __ __ 79 80 81 __ __ __ __ __ __ 88 89 90 __ __ __ __ __ __
    1996 .... __ __ __ 99 00 01 __ __ __ __ __ __ __ __ __ __ 12 13 14 __
    2016 .... __ __ (19?)
    J-S
    J=S

    count __ 07 05 05 05 04 02 03 01 02 03 05 08 07 03 01 00 02 03 02 04 ______

    This effect is certainly more robust than the temperature signal. The peaks in solar activity occur 1-4 years before alignments and much weaker solar activity usually happens after the alignments. This effect can be demonstrated in active periods further back into the past based on Schove's research into timing (mostly from auroral sightings before the telescope era).

    Well, this has been somewhat of an interruption in the discussion about this winter, but now you have a data base for cold winters to play around with.


  • Registered Users Posts: 692 ✭✭✭bazlers


    Well that 2010 forecast was not really a true long-range forecast......

    Apologies. Didn't look at all your references to winter 2010 up to that point. I get excited this time of year until I am eating Xmas dinner looking out the window at daffodils in full bloom and wondering why oh why do I bother:)
    Many many years have gone into this research it's some piece of work MT. I have looked at your thread on your theory on LRF on Netweather under R J Smith fascinating and the influence of the gravitational fields.

    Unfortunately I think I am like Pooh the bear and am with small brain! so it will take me a long time to get my head around it. (If ever)from what you post this morning we are definitely with a better than average chance of this winter been colder that average winter.

    Unfortunately for me the calendar split winter (as I said earlier I am with small brain :)so in my head I go more by season than years but I guess all the data is yearly. It's just the 9 months in between the year (Jan. Feb....Dec) to calculate confuses me so I have to extract the data to suit my needs

    Anyhow this winter maybe epic maybe not, maybe just plain Jane, the fun is in the forecasting and hoping for "the one"


  • Registered Users Posts: 16,637 ✭✭✭✭nacho libre


    sryanbruen wrote: »
    UK Met Office:

    Considering how conservative their language is, the mere mention of precipitation turning wintry is an encouraging sign:)


    "My long-range seasonal outlook calls for colder than normal temperatures for most of the winter months, and higher than normal snowall amounts."


    At first I thought the 2010 winter forecast, that was posted on the previous page, was M.T Cranium 2018-2019 winter forecast, so I got a bit carried away reading the above lines


  • Registered Users Posts: 1,985 ✭✭✭Artane2002


    Considering how conservative their language is, the mere mention of precipitation turning wintry is an encouraging sign:)


    "My long-range seasonal outlook calls for colder than normal temperatures for most of the winter months, and higher than normal snowall amounts."


    At first I thought the 2010 winter forecast, that was posted on the previous page, was M.T Cranium 2018-2019 winter forecast, so I got a bit carried away reading the above lines
    Carinthian on Netweather, who knows good forecasters in Austria I think (who have access to charts that we don't have access to) said this
    The longer term charts I have been told over here do indicate a strong Polar front to move through much of Europe towards the last 10 days of this month with the establishment of a more northerly block. Should get an update tomorrow morning when I will push for a bit more information from our resort portal forecast team. Fingers cross !

    C


  • Registered Users Posts: 5,543 ✭✭✭giveitholly


    Keep us updated artaneðŸ‘


  • Registered Users Posts: 692 ✭✭✭bazlers


    Considering how conservative their language is, the mere mention of precipitation turning wintry is an encouraging sign:)


    "My long-range seasonal outlook calls for colder than normal temperatures for most of the winter months, and higher than normal snowall amounts."




    At first I thought the 2010 winter forecast, that was posted on the previous page, was M.T Cranium 2018-2019 winter forecast, so I got a bit carried away reading the above lines

    Yeah I'm kinda sorry I reposted it now.
    I don't think MTs forecast will be too far from that. The jet stream going south for us is the big one. I hope it hits Australia! Bwtfdik


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  • Registered Users Posts: 17,797 ✭✭✭✭hatrickpatrick


    bazlers wrote: »
    Yeah I'm kinda sorry I reposted it now.

    J49gwcu.jpg


  • Registered Users Posts: 1,985 ✭✭✭Artane2002


    ECM seasonal is out. Imgur isn't working so I can't upload the images here.

    Dec 2018 - Mild and wet I guess? We are just on the edge of the Atlantic trough with HP in S Europe

    Jan 2019 - Anticyclonic - looks like it could get very cold and very frosty. If we can't get snow then I'd take that with open arms.

    Feb 2019 - Looking good for cold and snow with northeasterlies but the usual caveats... too far out/unreliable


  • Registered Users Posts: 13,509 ✭✭✭✭sryanbruen


    Artane2002 wrote: »
    ECM seasonal is out. Imgur isn't working so I can't upload the images here.

    Dec 2018 - Mild and wet I guess? We are just on the edge of the Atlantic trough with HP in S Europe

    Jan 2019 - Anticyclonic - looks like it could get very cold and very frosty. If we can't get snow then I'd take that with open arms.

    Feb 2019 - Looking good for cold and snow but the usual caveats with northeasterlies... too far out/unreliable

    Yes, just had a brief look at them myself and I share the same interpretations.


  • Closed Accounts Posts: 1,027 ✭✭✭MidMan25


    December mild and wet :( sounds awful


  • Moderators, Business & Finance Moderators, Recreation & Hobbies Moderators Posts: 24,735 Mod ✭✭✭✭Loughc


    MidMan25 wrote: »
    December mild and wet :( sounds awful

    Literally worst outcome.

    The forecast has gone from a very positive to a very
    Miserable outlook :(


  • Registered Users Posts: 13,509 ✭✭✭✭sryanbruen


    Loughc wrote: »
    Literally worst outcome.

    The forecast has gone from a very positive to a very
    Miserable outlook :(

    Despite this, Matt Hugo still says a mild, wet and zonal Winter is unlikely in his opinion. Famous last words. Even says December holds some interest.

    https://twitter.com/MattHugo81/status/1059529724458872833


  • Registered Users Posts: 32,634 ✭✭✭✭Graces7


    We had snow atop the mountains here for 2 days mid-October. Very very early and unusual.

    Local lore is speaking of a bad winter and that is my deep instinct too. Totally unscientific but there we are!

    The relationship with the weather out here(West May.offshore island) is very deep. It governs life mightily.


  • Registered Users Posts: 32,634 ✭✭✭✭Graces7


    MidMan25 wrote: »
    December mild and wet :( sounds awful

    sounds good to me;;;;been enough drama this year...west mayo. offshore island


  • Registered Users Posts: 1,008 ✭✭✭icesnowfrost


    We had snow on top of slieve foye (co Louth) on Saturday the 27th of October. Only a light dusting about2-3 inches but was great to see it.


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  • Registered Users Posts: 6,140 ✭✭✭highdef


    We had snow on top of slieve foye (co Louth) on Saturday the 27th of October. Only a light dusting about2-3 inches but was great to see it.

    I don't think are many people who would define 5 to 7cm of snow a light dusting!


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