07-16-2022, 10:11 AM
![[Image: _125927766_extreme_heatwave_map_v2_2x640-nc.png]](https://ichef.bbci.co.uk/news/976/cpsprodpb/104D4/production/_125927766_extreme_heatwave_map_v2_2x640-nc.png)
A national emergency has been declared after a red extreme heat warning was issued for the first time, as temperatures could hit 40C (104F).
The Met Office's highest warning covers an area including London, Manchester and York on Monday and Tuesday.
It means there is a risk to life and daily routines will need to change.
Speed restrictions are likely on railway lines, some schools will close early and some hospital appointments will be cancelled.
On the roads, gritters are planning to spread sand to reduce melting, and the RAC has warned more drivers will need help as cars overheat.
On top of the Met Office warning, the UK Health Security Agency issued its highest level four heat alert to health and care bodies - warning illness and death could occur "among the fit and healthy".
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