- Warning valid below 800 m a.s.l. - Possible impacts: Significant risk of circulatory problems. - Recommendations for action: Drink (preferably unsweetened) liquids regularly and in sufficient quantities (at least 1.5 litres a day). Allow air to circulate through your home or other buildings before the hot part of the day, i.e. during the night and early in the morning. - Highest temperatures and humidity: 32 - 36 °C, 30 - 50 % - Lowest night temperatures: 16 - 21 °C - Peak phase of the event: Tue 12 - Wed 20 - Temporary mitigation: -