1. Shanghai is located at the mouth of the Yangtze River, which is an inland estuary and far from the Pacific Ocean. The energy of waves and seawater has dissipated when entering the Yangtze River estuary, so the probability of tsunami is relatively low.
2. The sea around Shanghai is not in the earthquake zone, and the movement of the earth plate has not brought enough energy to trigger a tsunami.
3. The sea area around Shanghai is relatively shallow, which makes the energy of waves dissipate more easily and reduces the risk of tsunami.
Shanghai is a city with low altitude.
To sum up, the probability of a tsunami in Shanghai is relatively low. However, we still need to pay attention to the occurrence of natural disasters such as earthquakes to protect people's lives and property.