The western coastal provinces of the Netherlands were again placed under a Code Yellow weather warning for strong winds. It was at least the fourth warning issued this week by the national meteorological office, KNMI. There were hundreds of flight delays at Schiphol Airport, and there were some issues reported by the NS national railway.
Meteorologists in the Netherlands increased their warning for Storm Poly, issuing a Code Red weather warning for strong wind gusts that could range from 100 up to 120 kilometers per hour. The alert was intensified to the most severe Code Red weather warning for Noord-Holland, Flevoland, Friesland and the IJsselmeer area at 7:55 a.m. A Code Orange alert was in effect for Zuid-Holland, Groningen, Drenthe, and Overijssel, as well as the area covering the Wadden Islands, for similarly strong wind gusts.