Traditional Culture Encyclopedia - Weather inquiry - How to calculate the high tide time of Qiantang River?

How to calculate the high tide time of Qiantang River?

The spring tide in Qiantang River is the largest on August 18 of the lunar calendar, and it can be seen from the first day to the fifth day of the lunar month, and from 15 to 20 of the lunar month, so you can watch the tide on 120 days a year.

The spring tide time of Qiantang River is influenced by many factors, such as astronomy, meteorology, upstream inflow and riverbed topography. The following prediction of the spring tide time of Qiantang River is for your reference. Please watch the tide before 1 hour.

20 15 The best tidal time for Qiantang River is: every month in the lunar calendar 15 to 20, which is the maximum, and it can arrive half an hour earlier. Among them, 1 till 2 pm is the best.

Another year of tide watching. According to the latest forecast of Hangzhou Hydrological Station, from September 28th (August 16) to June 3rd (August 2nd1day), the tide-watching grade of Xiaoshan No.8 workshop reached Grade V in the morning and evening, and the tide-watching city in Xiaoshan, Xiasha Bridge, Qibao, Sanbao and urban balcony were all above Grade III.

This year, the tide in Qiantang River reached the highest value in recent years.

Under normal meteorological conditions (no strong convective weather such as strong cold air or typhoon), the tidal bore in Qiantang River this year is slightly larger than last year. It is estimated that the tidal range of Xiaoshan tidal bore city will reach about 3.6m on August 18, and the surge height will reach10.5m, and the viewing level will reach the top five. On August 18, the tidal bore in Yan Guan, Haining was as high as 2m, the highest in recent years, with good ornamental value.