HKO e-Bulletin for the Marine Community
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| Issue No.38 (Dec 2025) |  |
| This e-Bulletin provides the latest news and information on the development of weather services for the marine community. It is published on-line and in English only. | |
| New Recruits of Hong Kong Voluntary Observing Ship | |
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In 2025, a total of 6 vessels joined the Hong Kong Voluntary Observation Ship (HKVOS) fleet and started contributing to marine weather observations. |
| Sixteenth Meeting of the Liaison Group for the Shipping Community | |
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Members of the Liaison Group for the Shipping Community of the Hong Kong Observatory (HKO) attended the annual meeting at the HKO Headquarters on 28 November 2025. |
| Hong Kong Observatory actively participates in the activities of the Intergovernmental Oceanographic Commission | |
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The Hong Kong Observatory's Senior Scientific Officer Ms Lam Ching-chi and Scientific Officer Mr Chan Wai-seon joined the Chinese delegation consisting of representatives from the National Marine Environmental Forecasting Center (NMEFC) to attend the 31st Session of the Intergovernmental Coordination Group for the Pacific Tsunami Warning and Mitigation System (ICG/PTWS-XXXI) of the Intergovernmental Oceanographic Commission (IOC) of UNESCO held in Beijing. |
| Joint Working Group Meeting on Marine Science and Technology Cooperation between the State Oceanic Administration and the Hong Kong Observatory | |
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A five-member delegation from the State Oceanic Administration (SOA), led by Mr Wang Antao, Deputy Director-General of the International Cooperation Department (Marine) of the Ministry of Natural Resources (MNR) of China, attended the Seventh Joint Working Group Meeting on Marine Science and Technology Cooperation at the Hong Kong Observatory (HKO) on 30 October 2025. |
| Applications of Artificial Intelligence Models in Weather Forecasting | |
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Numerical Weather Prediction (NWP) is crucial for contemporary meteorological services. The Observatory makes reference to a series of NWP models when preparing weather forecasts. |
| Overview of Tropical Cyclones in 2025 | |
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Eight tropical cyclones occurred over the western North Pacific and the South China Sea in July 2025. Among them, Danas (2504) and Wipha (2506) necessitated the issuance of the tropical cyclone warning signal by the Observatory. |
| "Rapid Intensification" of Tropical Cyclones | |
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In the weather bulletins issued by the Hong Kong Observatory, it is sometimes mentioned that a tropical cyclone underwent a stage of “rapid intensification”. But what exactly do we mean by that? |
| Report on Super Typhoon Wipha (2506) | |
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| "Cool Met Stuff": Super Typhoon Ragasa and Swells | |
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Even when Super Typhoon Ragasa was hundreds of kilometres away from Hong Kong, the hazard was already quietly approaching, including the subtle but often unnoticed swells. The latest episode of "Cool Met Stuff" will introduce the formation of swells and their hidden dangers. |
| Overtopping Waves | |
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"Overtopping waves," as the name suggests, are waves that go over the top of coastal structures (e.g. seawall). While seawalls are meant to protect people, property and facilities along the shoreline, powerful wind waves and swell associated with tropical cyclones may breach the breakwaters during storm surge and high tides.
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| Weather Chit Chat Issue 99 | |
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| HKO e-Bulletin on Educational Resources Issue No. 83 | |
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The HKO e-Bulletin on Educational Resources is published on-line to cover in layman terms various interesting topics related to weather phenomena and popular science, as well as the latest developments in science and technology related to the Observatory's service on meteorology, radiation and geophysics. We welcome your views and suggestions. |
| Barometer Comparison Self-Check Service e-Form | |
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Barometer Comparison Self-Check Service e-Form |
| Statistics of HKVOS Ship Reports in Past 3 Years |
| Statistics of HKVOS Ship Reports in Past 3 Years |
| Promotional leaflet of MyOceanWx Gallery |
| Promotional leaflet of MyOceanWx Gallery |
| Marine Weather Review |
| Tropical cyclones over western North Pacific and South China Sea |
| Weather Information |
| Weather Information for the Marine Community World Weather Information Service Severe Weather Information Centre |
| Past e-Bulletins for the Marine Community |
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| Related Links |
| Hong Kong Port Meteorological Services Hong Kong Marine Departmant |