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.

It is not surprising that Arctic sea ice is taking a hit.

Left image is temperature anomaly for June month to dat.

Right image is the 7 day forecast.

these great maps are by @khaustein
Sure, it has been hotter in the Arctic in the past.

Almost exactly 1 year ago, we saw the highest temperature ever recorded in the Arctic Circle and we are not looking at this level of heat in the coming days.

It is also worth pointing out that it can get surprisingly hot in the Arctic. These places are in constant daylight too.

However, as the planet warms, the intensity, frequency and longevity of heatwaves are on the up. This is why the Arctic sea ice is declining.
Many news outlets will focus on historic heat in North America and Europe (and for good reason).

But I wonder how many will tell this story?

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More from @ScottDuncanWX

16 Jun
Oman 🇴🇲 just recorded its hottest day in history.

Temperatures soared to +51.6°C (124.9°F). This is +0.8°C above the old all-time record for the country.

Numerous intense heatwaves unfolding across the Northern Hemisphere right now.
H/t @extremetemps who has been following the heatwave very closely. The previous record was tied on multiple dates.

Now we have a clear national record.

Interactive observations available on OGIMET: ogimet.com/cgi-bin/ogimet… ImageImage
Read 4 tweets
14 Jun
Dude, where's my car? 🤔

A car dramatically disappears into the ground in Mumbai's Ghatkopar 🇮🇳 after heavy rainfall.

A whole new meaning to underground parking.

Hats off to @trevorjdunn for that witty response.
The fact that the car manages to disappear entirely is actually terrifying.
Read 5 tweets
13 Jun
The two hottest Mays *on record* for Russia 🇷🇺 have occurred in the last two years.

Records go back to 1891. This is mind-blowing.

May 2021 was 2nd hottest behind 2020.

2020 2021
The temperature change in Russia over the last couple of centuries is staggering. Data via @BerkeleyEarth.

May 2020 and May 2021 also attached (global view) for comparison with data from @CopernicusEU
Read 4 tweets
11 Jun
Antarctica is ridiculously cold right now.

It is deep winter down there with the relentless night. But it is significantly colder than normal.

It is so cold, it is having an impact on the global temperature anomaly.

THREAD
A lot of heat in Northern Hemisphere across many continents over the coming days but Antarctica sticks out like a sore thumb.

Map via @khaustein
This is the jet stream. The fast river of winds encircles the deep cold. Mesmerising right?

But right now, we have a strong jet and polar vortex locking the extreme cold over the ice sheets.
Read 10 tweets
20 May
Unprecedented heat in the Arctic again today.

Even hotter than yesterday. This thread explains what is going on. ImageImage
This part of the world is crazy. Northerly winds delivers cold and sub freezing while southerly winds can push exceptional heat (despite being in the Arctic). The range of extremes is enormous.

Check the trend from the last few days from this weather station...

Source: Ogimet ImageImage
Arctic heat flashes like this are not new. The fact that we continually push the boundaries of what is possible and keep breaking records in the Arctic is all part of climate change.

The Arctic is warming much faster than the rest of Planet Earth.
Read 5 tweets
19 May
It was hotter in the Arctic than pretty much all of your favourite European holiday destinations today.

This thread explains what is going on.
Let's start with anomalies. An anomaly compares the actual temperature to what is considered average for the time of year.

🔴 = warmer than normal
🔵 = colder than normal

You can see that most of Europe is much colder than average while Russia bakes in incredible warmth.
The weather pattern is perfect for singling out parts of Finland and Russia as hotspots.

The jet stream has a southerly track and locks cool air over much of the continent. The jet stream then lifts north around a blocking high pressure in Russia.
Read 15 tweets

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