The fire risk is particularly high on Thursday due to the San Juan tradition of lighting bonfires and setting off fireworks. Please be extra careful with cigarettes and even with glass bottles, and call 112 if you see any sign of a fire.
It's way too hot to be walking up in the cumbres this weekend.
The heat alert lasts until Sunday when the blob of hot, dusty air that is currently over the Canary Islands is due to fade. Until then, expect temperatures well over 30ºC between midday and 18.00 every day. The north will be cooler with some early and evening cloud cover.
Be aware that southeast coast could well be gusty over the weekend.
Happy San Juan!