In the sea area in front of the Central Square of Co To Special Zone, the tide rose to a record high with the water level rising to 4.2m.
According to Co To residents, this is very rare in this area. Local people call this the phenomenon of "re-South" - the South waves meet the South wind.
According to the National Center for Hydro-Meteorological Forecasting, the tide level in Co To Special Zone during this time can peak at 4 to 4.2m, even reach 4.5m when combined with waves from 35m high.
The high tide will start at 12:30 and the water will create the highest big wave around 2pm. According to local experience, after 1 hour the water will recede. This is an unusual development that is at risk of affecting the sea around this area.

This high tide phenomenon occurred right at the time affected by storm No. 3, so the risk level was even more serious. Coastal areas, port areas, coastal roads and residential areas near the water edge are likely to be deeply flooded, landslides and infrastructure damage.
Currently, there are still strong winds and heavy rain in Co To special area. The government recommends that people do not be subjective, negligent, lose vigilance, absolutely do not go to sea during this time, do not gather at embankment areas and wharves during the high tide, and proactively take response measures. At the same time, proactively move people and property out of low-lying areas, especially areas at risk of isolation.