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08-05-2020, 07:36   #1
Danno
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Summer 2020 - General Discussion

As May trundles on and June beckons on the far horizon means that Summer 2020 is approaching.

How will Summer 2020 be weather-wise in your opinion?

Will the northern blocking patterns continue?

With Covid-19 causing pollution levels to fall sharply, does this in any-way play into weather patterns?

For me, this Spring has had notable similarities with 1995 and I think another summer like 1995 is a possibility this year.

Discuss!
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08-05-2020, 09:05   #2
DOCARCH
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For me, this Spring has had notable similarities with 1995 and I think another summer like 1995 is a possibility this year.
I was in the US for summer 1995, so looking forward to it!

My overriding memory of summer 1995 was reading about a guy (in Dublin) sun burnt and stuck up a chimney!
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20-05-2020, 12:26   #3
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Just copying MTC's Summer Outlook in here as I know alot of people will be looking for it and it will get lost in the daily forecasts thread!


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Originally Posted by M.T. Cranium View Post
Summer Outlook for 2020 -- In general, expect a near average summer with perhaps a slight bias to warmth, and near average amounts of rainfall. There will probably be a few warm to hot spells mixed in, but not dominating the entire season. It may be somewhat more unsettled in June and early July than later in the summer. Warmth may persist well into September as there is a signal for a warm autumn in general. For those who like thunderstorms, I think the chances are about average but would note that sometimes a near normal pattern is good for the production of one or two good events. So in summary, a bit of everything can be expected and no dominant theme, but as I like to offer forecasts in probability terms, I would add that there is a bigger chance of this "busting" towards warm/dry than cool/wet, so would set the odds at one in five for a cool, wet theme, about 50% for near average and 30% for warm/dry. That might also be a guide to the relative frequency of these different patterns during the summer ahead.

The highlight of the summer nights will be this year's conjunction of Jupiter and Saturn. By July and August, these planets will be prominent and visible most of the evening and middle hours of the night, and culminating in a close pass by the autumn. They are still somewhat distant (as we see them) in the morning skies at present, late June will be the earliest that you can expect to get a good view at a reasonable hour as they will appear a few minutes earlier each night. Another thing you're likely to notice is that full moons this summer will appear lower than we've seen them in recent years, as the lunar declination cycle of 18.6 years reaches maximum range in 2024. What that means is that the summer full moon will also be quite a bit south of the ecliptic plane (where the Sun would be in winter in the same part of the sky) and that means it appears even lower than the mid-winter sun, especially the early July full moon. Mark these dates on your calendar: July 4 and 5 -- the full moon will be seen near Jupiter and Saturn on either evening, probably a bit closer to them on the 5th as it moves past. This will be repeated just before the August full moon on 1st and 2nd, and a few days before the September full moon at the end of August. The close approaches of the Moon in late September and October will involve the waxing "half moon". I will research whether or not there might be occultation events where the Moon passes in front of each planet and let you know if these are going to be visible at the right times for viewing. Meanwhile Venus will very soon end its appearance as a prominent evening star as it drops out of sight in June and early July then begins to appear in the morning skies by late summer. Mars is going to become more visible in the autumn months, rising later than Jupiter and Saturn all summer. Mars will continue to edge further away from those planets and will be on its own in the midnight skies by October and November, starting to approach the familiar winter constellations of Taurus and Orion. It will pass fairly close to Aldebaran (a similar looking object) between Orion and the Pleiades by this coming December.
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20-05-2020, 17:34   #4
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The next few weeks are looking like plenty of high pressure with some minor interruptions from the Atlantic. Most of the medium to long range models are showing us fairly dry over next few weeks, but today's CFS is showing a bit of a cool and unsettled start to June.

The GFS is showing it more unsettled in 9/10 days time, but we've been chasing that wet outlook for the past month!

Fingers crossed we get a summer that will have shades of 2018 and 1995. 2019 was a very poor year for weather, so we can do with a break for 2020.
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20-05-2020, 18:11   #5
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Fingers crossed we get a summer that will have shades of 2018 and 1995. 2019 was a very poor year for weather, so we can do with a break for 2020.
Yes fingers crossed. You are forgetting the glorious summer of 2013!
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21-05-2020, 12:17   #6
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A friend of mine thinks that we are in for a rather wet and cool summer this year. I hope he is wrong. Flying off to the Med could be dodgy due to the virus.
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21-05-2020, 17:30   #7
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With the record polar vortex and now the big drop in CO2 levels...im sure both these will have an effect on the usual summer weather we get...so it has to be different and anything other than our usual summer weather can only be a good thing
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24-05-2020, 15:34   #8
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If the long range models are to be believed this is what we are in store for: Take this all with a pinch of salt as the long range models can go completely pear shaped and not all models are forecasting a similar summer. This is just for fun.

Meteo France: a dryish summer and fairly warm at times, temperature 0.5 to 1C above average for the most part. Signs of it a bit more unsettled towards August.

ECMWF: high pressure dominating for much of the summer. Jet Stream to the north of us much of the time. High pressure intensifies throughout the summer and dominates into the Autumn as well.Once again temperatures around average or a little bit above average and building towards possibly a warm autumn. Relatively dry most of the time, nothing too wet.

DWD: hints of an unsettled start to the summer with northern blocking for June. High pressure moves back over us from mid summer and intensifies into August and beyond into autumn. Average temperatures for the summer, nothing too warm on the horizon. A wetter than average start to the summer, perhaps with the northern blocking causing low pressures to slip south-westwards over Ireland from the north. Turns dryer than average into the second half of summer and into the autumn.

CFS:
A warm start to June but hints of it turning more unsettled as we progress into July. A very dry June overall. High pressure pulls out into the mid Atlantic and jet stream is on a north-west to south-east movement over us, turning us cool and unsettled for July. High pressure over Scandinavia for August, perhaps a flat westerly for us with the jetstream staying over us. August may finish up wetter than average. In general this looks like a fairly mixed and Atlantic dominated summer once we get June out of the way.

Beijing Climate Centre:
An unsettled June with some cool northerlies. June is also looking wetter than average. Heights rise over us during July and dominate into August and the high pressure keeps on going well into Autumn. Plenty of high pressure from July right up to October or early November. Temperatures look average or slightly below average for June then warmer than average from July with August in particular looking quite warm. This carries on into the autumn as well. Generally dry or very dry conditions from July right through August and on well into the autumn with mostly high and dry pattern dominating for perhaps several months.
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Yesterday, 18:56   #9
Mortelaro
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Any word of Graces7 ?
No posts in over 2 months,since the Coronavirus situation started
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Yesterday, 18:58   #10
Oscar Bravo
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Any word of Graces7 ?
No posts in over 2 months,since the Coronavirus situation started
Seems to have gone off here but posts daily on her blog.
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Yesterday, 18:59   #11
Mortelaro
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Seems to have gone off here but posts daily on her blog.
Ah well that's something
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