Locally, dense fog may occur, causing visibility to be less than 200 meters. The KNMI advises road users to adjust their speed and to keep a sufficient distance. “Fog can be treacherous if it occurs suddenly,” according to the KNMI.
With code yellow, the KNMI calls on people to be alert, because there may be a risk of dangerous weather. The warning applies to Friesland, Groningen, Drenthe, Overijssel, Gelderland, Flevoland and North Holland, from 5 a.m. to 8 a.m.