Heat warning level 4: Monthey - Val d'Illiez
Unchanged since the first report last verified 18:13 CEST
Summary
A level 4/5 heat warning is in effect for Monthey - Val d'Illiez due to persistently high temperatures. Circulation and health are under significant strain.
What hazard threatens
Persistently high day and night temperatures strain the circulation and favour dehydration, heat stroke and health emergencies, especially for the elderly, infants and the sick. The risk of forest and wildfires also rises.
Local weather conditions
Measuring station Les Marécottes, 990 m a.s.l., 11 km from the event
Measurement taken 855 m below the altitude of the warning area (1845 m a.s.l.).
27.0 °C
30.1 °C
48 %
Day of warning and following days
- Wed 29.07. 30° 20° measured
As of: Values as at the time of the warning; they are not updated afterwards.
Source: MeteoSwiss
Context & protective measures
Background: heat waves are becoming more frequent and intense in Switzerland. The greatest danger is the health burden from persistently high day and night temperatures, which favour dehydration, heat stroke and circulatory problems. The elderly, the chronically ill, pregnant women and infants are particularly at risk.
Recommendation
Likelihood is medium, impact is high. Drink enough, avoid the midday heat and physical exertion outdoors. Keep living spaces cool by ventilating at night and in the morning and shading during the day, and look after vulnerable people around you.
What to do now
Drink enough right now, shift outdoor activities to cooler times of day and observe any fire bans in place. Check whether vulnerable people near you need support.
Risk matrix
Event location
- Coordinates · WGS84
- 46.1860° N, 6.9167° E
- 46°11′09.5″ N 6°55′00.0″ E