[rozab]

..since that warning was introduced in 2021

[tfsh]

It was introduced given the increase in temperature. This is the first time in recorded history that the temperature in the UK has been forecasted to reach 40°C

[dcomp]

To be fair they have been monitoring deaths before [0], just the first time there's a national warning to the public.

Quite a few schools have decided to use this warning to close as they are unable to manage heat on their premises [1]

[0] https://www.gov.uk/government/publications/phe-heatwave-mort...

[mnobu]

This will be the hottest temp ever recorded in the UK though.

[randomsearch]

The hottest temperature by a couple of degrees. That’s a ridiculously large jump.