[Bored chemist]

Today in the Bay of Fundy the amplitude of the tides can be 6 meters, and tomorrow 18 meters.
What is the reason for such a sharp jump?

Well, if it's true (which is questionable) a reasonable component might be the weather.

[Yusup Hizirov (OP)]

How to understand the fact that the amplitude of the tides in the Bay of Fundy yesterday was 6 meters, and today is 18 meters.
What changes have occurred in a day, for such a sharp jump?

Well, if it's true (which is questionable) a reasonable component might be the weather.

If you mean a storm surge, and a seasonal increase in the level of the bay.
When calculating the amplitude fluctuations tides, these facts are not taken into account.

[Colin2B]

The amplitude of the tides on earth is almost the same every year,

The amplitude and timing of the tides vary with the alignment of the moon and sun.
The situation in the Bay of Fundy and similar flow constrictions has been explained to you in many other posts.
Please do not repeat false information that has been previously explained.

[Bored chemist]

I think the author means in the literal sense.

OK, but in the real sense they are simply wrong.

[The Spoon]

Today in the Bay of Fundy the amplitude of the tides can be 6 meters, and tomorrow 18 meters.
What is the reason for such a sharp jump?

Where does it show this? Please post tide tables that show this variance.