It later became the most intense summer storm to impact the Netherlands, bringing destructive gusts to the nation, peaking at 148 km/h (92 mph) in IJmuiden.

[8] There was a mild storm surge in the Netherlands due to Poly, which caused limited floodings in combination with a large amount of precipitation.

[4] A red wind warning was issued for the provinces of North Holland, Flevoland and Friesland as strong gusts were expected.

[6] Additionally, some ferries from Germany to islands off the north coast were canceled, while powerful gusts toppled trees, disrupting a line between Hamburg and Sylt.

[14] The precursor low-pressure area to Poly would produce heavy rain for East Anglia, causing a game in Wimbledon to be postponed.