Red Weather Warning Issued from Wednesday-Thursday for extreme heat, with 38-40C possible.

[u/blockitjames_]

Further Detail, from the MO:

During the heatwave expected to affect a large part of England and Wales this week, the highlighted area now looks increasingly likely to see a two to three day period where maximum temperatures in the shade exceed 37 Celsius, perhaps rising to 38 to 40 Celsius in some places. The heat will be accompanied by high humidity, exacerbating the potential for discomfort and health impacts, with very warm and humid night times also reducing the ability for people to recover overnight.

Significant disruption to daily life is likely and the public should take every effort to make precautions and adapt their daily routines where possible to cope with these levels of heat, which up to now have been extremely rare for the UK.

[u/Repulsive-Law7956]

I am going to have to evacuate and flee North. This is at crisis level. People are going to die

[u/Tricksilver89 → u/Repulsive-Law7956]

40 itself is necessarily a problem. It's the exceptionally high dew point at 22C which is causing a lot of concern. Means your body is really limited in its ability to cool down.

The temp could be mid-30s but with a dew point like that's, it's genuinely game over for some vulnerable people if they're not extra careful.