A significant impact of El Niño is expected to be felt as a large volume of water moves northward. This movement of water is driven by El Niño and is coming from offshore of certain regions. Oceanographer Dillon Amaya notes that the arrival of a particular type of wave is a clear signal of El Niño's presence.

The effect on sea levels is notable, with an increase predicted by mid-October. Further information about this phenomenon can be found through the original report.

Details about the wave and its implications are available from the source, providing more insight into the situation.