Yesterday (22 January 2019), snow was falling from the sky, the Dutch Railways adjusted their timetable, and there was almost 2300 km of traffic jams.
The Royal Netherlands Meteorological Institute (KNMI) even issued Dutch ‘code geel’ nationally.
This raised the question; ‘How often does a weather warning occur?’
I collected all the data I could find on the website of the KNMI and used my R-skills to build this graph.
