July 25, 2019
During our stay in Porto a low pressure with winds up to 40-50 knots, was moving NE some 500 M off the coast of Portugal on Wednesday July 24. During the afternoon the day after the passage, a 3-4 m swell from the low pressure reach Douro river and as long as the tidal level was low, the harbor wasn’t affected that much. I think the swell loose energy on the 6 m river bar. However, when the tidal level increased (approx with 2 m) during the evening, more and more swell pass the bar. There was no visible waves in the harbor, the only visible sign of the swell was that Sally and the other boats start dancing with the finger pontoon it was docked at. Continue reading “Swell in Porto”
