Supersized heat waves used to be rare. No longer. A Reuters data-driven examination of global temperatures reveals the emergence of what we call ‘heat storms.’ They now swarm the planet, upending life around the world from Texas to Ivory Coast to Poland.

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Weird, it works for me.
I tried to archive it to post that link here, but that didn't work.

https://www.reuters.com/investigates/special-report/climate-heatstorms-methodology/

They both worked for me, that one might work better, not sure. It's essentially the same article but the graphics are static.

I think my problem is that Reuters blocks VPN exits. Not going to disable it just for them.

They seem to have taken steps against being archived as well. Not really my forte though, so maybe someone else has better skilz.

Thanks, but if they choose to hide their content, why should we stop them?

Their definition of a heat storm is 90th percentile temperature over an area half the size of Canada. I could not find the baseline 90th percentile mark, but it could be 1960 or 1980.

This is a made up definition. It mostly tracks overall extreme global warming since 1980. Warming oceans means automatic amplification of surface air temperatures over those oceans, and so under their definition, massive air heat storms are occurring just in every day conditions, under global warming.

A far more interesting study question is whether very strong long lasting high pressures are more common. Hurricanes (strong low pressures) have extremely amplified since 2016 in both numbers and strength events.