Why did the tide rise so much in February?

Because of the weather in February and the position of the earth and the moon.

The actual tide will also be restricted by many factors such as geographical environment, coastal location, ocean current movement and so on. Taking the tide of Qiantang River as an example, we know that Hangzhou Bay at the mouth of Qiantang River is flared and narrower and narrower. In addition, the sediment brought in during the high tide is deposited at the bottom of the river to form sandbars, which leads to the surge of the tide.

The moon is attractive to the earth's seawater, and the distances between the points on the earth's surface and the moon are different. The place facing the moon is subjected to great gravity, and the sea water expands outward. Where the back is to the moon, the gravity of seawater is small and the centrifugal force is large. Under the action of centrifugal force, the sea water expands to the back of the moon, and there will also be a climax.