Alastair Thompson Profile picture
Jul 22, 2021 14 tweets 8 min read Read on X
A brief pictorial thread of parts of the northern hemisphere where extreme or unusual weather phenomena are underway.

Starting with #eastasia #infa & #3rdStorm which seems to have initiated formation. This is the storm which will crash #Olympics2021, shortly after the opening.
The 1st animation is 120 hours. This version goes for 11 days longer. As on #infa’s path beyond 120 hours, what happens beyond July 26th is pretty uncertain. #infa is also continuously not behaving as expected, totes normal for a heat engine of this magnitude.
Heading west a few thousand miles the lingering impact of the #ArabianMomsoonBurst is set to continue for some time bringing thunderstorms to the Arabian peninsula on a daily basis. See @Arab_Storms for video reports.
Next we go north west to Europe where a brief spell of hot weather and cloudless skies in the West is about to end, reverting to the #europebigwet conditions of the first half of the year. Lower than normal temperatures and endless thunderstorms, some of which have taken lives.
This version of the same map highlights areas of unusually high atmospheric moisture. Europe returns to an elevated state but the impact of the #arabianmonsoonburst on the Sahara is the most interesting phenomena here. Lots of #desertrain.
A third view shows us the next 5 days of rainfall accumulation. I am in the direct path of the incoming rain in Europe which arrives tomorrow and which will be a pleasant change for me at least. As I like rain. And rain hereabouts is generally very gentle.
Another unusual aspect of these North Atlantic forecasts is the continued absence of cyclones. While there have been several named storms this year, there had been only one hurricane, #Elsa which brought a lot of rain to the Eastern seaboard.
And finally a view of the #westafricanmonsoon which is having a very active year, in line with the East Asian and Indian Monsoons. These are the engines which are producing both predicted and some unpredicted changes to weather systems (e.g. the quiet Atlantic hurricane season.
Rivers are fixed in place, predictable, but at times hugely destructive. There are also fluid atmospheric rivers in the sky fed by convective thunderstorms which can tower to 18kms high and transport water thousands of Kms at high speed.
These two animations show forecasts for those rivers.

This one over the Western Pacific where typhoon #infa is sitting in the middle of a huge mass of meandering very wet atmosphere, and orchestrating what is happening around it.
These two animations only show the winds at 250hpa pressure, between 11-15kms high typically. But there are rivers at many different altitudes and they go in different directions.

And the physics of this gets more complicated the more water/energy there is.
This is why hurricanes are so hard to compute.

It is a scientific miracle that these models enable us to see into the future. They are a much needed early warning system for the globe which will help us to navigate the difficult times ahead.
But a massive investment and collaboration may well be needed to provide global coverage of the kind that currently exists in the US with meso-scale very accurate, rapid update short time scale models capable of identify local catastrophes yet to come, in time to prepare.
We live in interesting times, and it seems they are about to get much more interesting on the weather front.

/ends

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More from @althecat

Sep 10
At this point following the Qatar obscenity Israel is now breaking the internet and the world.

something decisive is needed to break Israel - a peaceful action that will work and show the world that justice still exists and that peace is possible.
A wise friend proposed a brilliant idea. Every nation on earth which is willing and able should send a frigate to the Mediterranean Sea and take a message to Israel that it cannot ignore.
The foundations of the United Nations itself are now crumbling under the weight of the Gaza Obscenity and nations like Britain that seem to have been turned are facing protest and resistance of epic proportions from their citizens.

The center cannot hold.
Read 5 tweets
Sep 4
I’ll be posting videos and news here on Twitter from the flotilla which is about to depart from Majorca for Tunis on the first leg of the journey to Gaza.
More boats are expected to join the flotilla from Europe and North Africa along the way as it moves west across the Mediterranean. @GretaThunberg is making the voyage again and Israel will not be able to contain or stop this flotilla most likely. And definitely not the publicity.
This first video is of a wind squall hitting one of the boats as it departs Barcelona.
Read 13 tweets
Aug 10
Netanyahu has proposed a pathway to end the war in Gaza under pressure primarily from the U.S. UK, France & Germany. Spain and Ireland and several other European nations & the European Commission.

LIVE: PM Netanyahu Holds a Press conference youtube.com/live/1ebXvF9MO…
The @israelipm sounds defeated. Hopefully this is the beginning of the end. The deal being offered to Gaza is far from perfect but it sounds workable in Netanyahus outline.
@IsraeliPM Whether it will be approved by Hamas however is unclear and rather complicated - as it’s unclear who inside Gaza would be in a position to respond to the offer. Many of Hamas’s fighters may prefer to die as martyrs also than to agree to any deal.
Read 5 tweets
Jul 25
Guess who has the most to lose if/when @realDonaldTrump discovers he’s now a lame duck President.

He is now so deep under water both in polling and with his base that it’s very hard to imagine him bouncing back.
I’ll answer my question shortly buts it’s well worth pondering…. In the meantime consider this.

Trump is now a laughing stock. And not only is everyone in America now laughing at him. But he has also been abandoned by his base and his party.
The bonfire of vanity that belongs to Donald Trump is iridescent, a signal to the world that his presidency has ended before it even started.
Read 7 tweets
Jul 25
This is pathetic from @realDonaldTrump he’s lashing out like an angry teenager. Jerome Powell says he’s included a the costs of a building that was completed years ago in his very public attack on the FED Chair.
Trump has completely lost the plot. The single most damaging thing that he could do to undermine confidence in the U.S. dollar (which he publicly claims to want to deflate and there by make all Americans poorer - is to attack the Federal Reserve and the SEC.
@realDonaldTrump Trump is setting fire to the dollar to distract from his Epstein mess what a complete baby.
Read 4 tweets
Jul 2
I attended the Bonn climate talks. They were very disappointing to everyone. The elephant in the room was (of course) the U.S. decision to withdraw from the talks altogether.

open.spotify.com/episode/3YV0SU…
Unfortunately.. perhaps intentionally in advance of the continuation of climate talks regardless of #US_Disintigration the talks were also very sparsely attended particularly by activists and NGOs. The reason for this was @elonmusk destroying @-USAID.
@elonmusk As you can see the USAID Twitter account is now dead - deleted which is an appalling act of vandalism executed by Elon and his tech-bro team of teenagers.
Read 13 tweets

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