Buoys from the Hydrographic Institute record strong waves during the passage of depressions Babet, Aline, and Bernard.

Between October 17th and 23rd, 2023, an increase in wave height was observed in the observation records of the multiparametric buoys located in Leixões, Nazaré, Sines, and Faro (see the attached graphs representing the maximum height and atmospheric pressure measured by the buoys).

The maximum wave height values observed were as follows:

. Leixões recorded 15.8 meters on the morning of October 20th;

. Nazaré recorded 11.7 meters on the morning of October 20th;

. Sines recorded 11.5 meters on the morning of October 20th;

. Faro recorded 9.9 meters on the afternoon of October 22nd.

Currently, the Hydrographic Institute (IH) maintains a set of coastal ocean monitoring networks off the coast of mainland Portugal as part of the MONIZEE system (https://www.hidrografico.pt/iprojeto/3). These networks include in situ monitoring networks (multiparametric buoys, directional wave buoys, coastal tide gauge stations, and coastal meteorological stations) - measuring various oceanographic and/or meteorological parameters at the location of the measuring equipment - and remote monitoring networks (coastal HF radar stations) - measuring oceanographic parameters (current speed and sea state) of interest in adjacent maritime areas.

Check the MONIZEE network observations at https://geomar.hidrografico.pt.