Observations at the Cap-aux-Meules station.

Figure 1. Observations at the Cap-aux-Meules station. Graph showing the steep drop in atmospheric pressure, from 1,020 to 960 mbar within a few hours in the Magdalen Islands region and the rapid passage of the low-pressure system, which produced a suction effect causing the water level to rise to 2.6 m.

Legend :

Observed water level – red line

Predicted level – black line

Atmospheric pressure – orange line

Black vertical lines – difference between the observed water level and the predicted tide