Level 4 Heatwave Emergency

15 July 2022

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The Met Office has issued a rare Level 4 extreme heat warning due to the exceptionally high temperatures expected on Monday and Tuesday, which could be as high as 40C in London.

Tips for coping in the heat

  • Look out for those who may struggle to keep themselves cool and hydrated. Older people, those with underlying conditions and those who live alone are particularly at risk. 

  • If you live alone, ask a relative or friend to phone to check that you are not having difficulties during periods of extreme heat. 

  • Stay cool indoors: Close curtains on rooms that face the sun to keep indoor spaces cooler and remember it may be cooler outdoors than indoors. 

  • If going outdoors, use cool spaces considerately.  

  • Drink plenty of fluids and avoid excess alcohol.  

  • Never leave anyone in a closed, parked vehicle, especially infants, young children or animals. 

  • Try to keep out of the sun between 11am to 3pm, when the UV rays are strongest. 

  • Walk in the shade, apply sunscreen and wear a wide-brimmed hat, if you have to go out in the heat. 

  • Avoid physical exertion in the hottest parts of the day. 

  • Make sure you take water with you, if you are travelling. 

Why is a heatwave a problem?

The main risks posed by a heatwave are: 

  • not drinking enough water (dehydration) 
  • overheating, which can make symptoms worse for people who already have problems with their heart or breathing
  • heat exhaustion and heatstroke

Who's most at risk?

A heatwave can affect anyone, but the most vulnerable people are:

  • older people – especially those over 75
  • those who live on their own or in a care home
  • people who have a serious or long term illness – including heart or lung conditions, diabetes, kidney disease, Parkinson's disease or some mental health conditions
  • those who may find it hard to keep cool – babies and the very young, the bed bound, those with drug or alcohol addictions or with Alzheimer's disease
  • people who spend a lot of time outside or in hot places – those who live in a top floor flat, the homeless or those whose jobs are outside

For more information visit the NHS website.

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