A Heat-Health Watch system operates in England from 1^st June to 15^th September each year.

The Heat-Health Watch system comprises four levels of response based upon threshold maximum daytime and minimum night-time temperatures. These thresholds vary by region, but an average threshold temperature is 30 °C by day and 15 °C overnight.

Current Heat-Health Warnings for Nottingham (East Midlands):

For information on the Heat-Health level currently in force visit the Met Office's web site

Guide to different levels

Level 1 - Awareness — the minimum state of vigilance during the summer. The majority of the time the risk of a heatwave will be less than 50%. However, when the risk exceeds 50% this will be indicated by 'Level 1 - Awareness - Increased risk'.

Level 2 - Alert — triggered as soon as the risk is 80% or above for threshold temperatures being reached in one or more regions on at least two consecutive days and the intervening night.

Level 3 - Heatwave — triggered as soon as the Met Office confirms threshold temperatures will be reached in one or more regions.

Level 4 - Emergency — reached when a heatwave is so severe and/or prolonged that its effects extend outside the health and social care system

Further information and advice from the Met Office on what to do in a heat wave

Advice from the NHS on what to do in a heat wave