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The tidal prediction made by Hong Kong Tidal Stream Prediction System is based on the tidal components generated from the updated Hong Kong Tidal Atlas model. The tidal components consist of amplitude and phase of 67 chosen tidal constituents. These predictions will deviate from the actual conditions in the field since temporal and localised meteorological effects and non-tidal flow variations could not be taken into account. Moreover, its accuracy further depends on the chosen tidal constituent set, accuracy of the underlying model, length of the simulation and location of the data points within the model, etc.
According to the comparison of the predicted data with the actual field observed data, the average difference in current peak magnitude ranges from 0.03 m/s to 0.21 m/s, while the average phase difference in peak velocity ranges from 50 minutes to 75 minutes.
Our Website is suitable to be viewed on desktop computers only. This system is not compatible with mobile platforms and may encounter the risk of system errors on mobile platforms.
The information available within this website may be re-disseminated or reproduced, provided that the Marine Department, as the source of information, is acknowledged and that the re-dissemination or reproduction is for non-commercial use. Any other reproduction, adaptation, distribution, dissemination or making available of the information available within this website for commercial use is strictly prohibited unless prior written authorization is obtained from the Marine Department. The Marine Department and the HKSAR Government shall not accept any responsibilities for any loss or damage arising from the information, or reproduction or re-dissemination of the information, within this website.
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"We collect personal information which may include name, mailing address, etc. from our site visitors for processing their requests or sending them materials. The information is used only by us for the purposes stated in the respective screens and such data will not be retained once the required action is completed. We do not use your personal data for any other purposes without your prior consent unless such use is permitted or required by law." For enquiries, please telephone the number 2504 0711 during office hours.