From midnight, code red applies in eight provinces due to extreme heat, the highest warning level that the KNMI has ever issued for heat. It concerns North Brabant, Gelderland, Utrecht, Limburg, North Holland, South Holland, Flevoland and Overijssel. In Zeeland, Friesland, Groningen and Drenthe, code orange remains in effect, and on the Wadden Islands code yellow. Inland, temperatures of 36 to 39 degrees are expected, with locally possibly 40 degrees. It also remains warm at night.