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29 Jun, 5 tweets, 2 min read
I can't believe I am writing this.

Canada 🇨🇦 has obliterated its national all-time heat record *for the second day in a row*.

Before yesterday, greater than 45°C had never been recorded. As far as climatology is concerned, this is deeply shocking.
This is what happened on 27 June

More observations from the area...

To beat a national record by a clear margin is astounding.

But to beat it on consecutive days with the new national record now nearly +3°C (5.2°F) higher than the old long-standing record is simply outrageous.
Thanks for sharing this truly remarkable and eye-opening moment. This story along with many other weather and climate graphics & explainers are appearing on my Instagram account.

⬇️⬇️⬇️
instagram.com/scottduncanwx
⬆️⬆️⬆️

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More from @ScottDuncanWX

Scott Duncan Profile picture
30 Jun
I didn't think it was possible, not in my lifetime anyway.

+49.6°C in Canada 🇨🇦 That is 121°F!

This is the story of the Canadian heat record that was crushed on 3 consecutive days by an unfathomable margin of +4.6°C (+8°F).

This moment will be talked about for centuries.
Before this heatwave, the Canadian national heat record stood at 45°C. This record held since July 1937.

Along came 27 July and smashed this by a whopping +1.6°C. But we were not done here, the heatwave was just getting started...

Image
The very next day, temperatures soared to a staggering 47.9°C, destroying the new record.

This did not last long though...

Read 4 tweets
Scott Duncan Profile picture
28 Jun
More extreme thunderstorms hammering Germany 🇩🇪 today.

This is Rottweil in the south-west of the country.

This is what you should absolutely not do...

Video via @R_F_Bolanz
The radar image is crazy.

Enormous cluster of thunderstorms, likely Mesoscale Convective System (MCS). Extreme flooding in southern Germany expected in the coming hours.

Radar image via @metdesk
Read 4 tweets
Scott Duncan Profile picture
25 Jun
Brutal heat building over the US Pacific Northwest and Western Canada right now will shatter many all-time heat records over the coming days.

The extent, intensity and longevity of this level of heat is absolutely mind-blowing.

THREAD
Yes, you are reading this correctly. Glowing white hot over +40°C (104°F) widely all along the western side of North America.

This is the animation in hourly detail. Let's not forget about how hot the nights will be.
The punishing heatwave has an incredible jet stream pattern.

The dome of heat will be encircled by the polar jet and this helps lift a sub-tropical jet branch almost into the Canadian Arctic.
Read 8 tweets
Scott Duncan Profile picture
22 Jun
Historic heat in the east and unseasonably cool in the west.

Europe has been split over the summer solstice, with enormous thunderstorms acting as the boundary between hot and cold.
A mesmerising meridional jet stream helps explain why the west-east contrasts exists.

Parts of Scotland had a frost last night while Finland nearly broke its all-time June heat record today.
Which side have you been on over the last few days?

Hot?
Cold?
Thundery?

GIF answers definitely accepted.

I will start...

London ⬇️
Read 5 tweets
Scott Duncan Profile picture
21 Jun
The Arctic heatwave ongoing in Siberia is contributing to continued record-low sea ice extent in the Laptev Sea. It reached a staggering +31.4°C (88.5°F) at 73 degrees north.

NASA satellite imagery just in captures the break-up in exceptional detail.

THREAD ImageImage
This is the Laptev Sea ice extent up to 20 June 2021.

2020 was by far the most extreme melt season in the area. But this year continues to break that record comfortably. ImageImage
This is the weather observations from earlier today in the area.

For those interested, you can access these maps at: ogimet.com/cgi-bin/ogimet… ImageImage
Read 7 tweets
Scott Duncan Profile picture
17 Jun
Heatwaves are hitting headlines all across the Northern Hemisphere right now but parts of the Arctic are about to get pummelled by ferocious heat.

This will accelerate ice melt in places already at record low levels.

THREAD
One of the places getting hit the hardest is around the Laptev Sea (north of Russia).

Air temperatures around the fringes of the Arctic sheets are expected to approach +30°C for consecutive days.

Note the open water already. This will allow for heat to become stored by the sea.
In the past, the Laptev Sea would be completely covered or mostly covered even towards the end of melt season.

This year has entered uncharted territory and this upcoming heatwave is likely to take the extreme further into the record books.

Read 7 tweets

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