The terrorist threat level in the Netherlands is "at the top of the range" of substantial threat, and nearing critical level, according to Minister Ard van der Steur of Security and Justice. This is because of "what happened with the Thalys and some other things". Belgium has placed extra security at the Dutch embassy in Brussels, as well as at the embassies of other countries part of the coalition fighting against terrorist organization Islamic State.
From last year the Cabinet has spent 1.5 million euros extra on the security of Jewish institutions. Minister Ard van der Steur of Security and Justice does not know whether more will be spent on this, but it is a possibility.
Jewish buildings in Amsterdam are going to receive extra security supervision, a decision made by the mayor on advice from the National counter-terrorism coordinator (NCTV).
The weather for Saturday's celebration of King's Day is predicted to be mild, with temperatures of 17 to 21 degrees. During the day, it might become cloudy during the day and the afternoon and evening may be interrupted with a few showers.