2.2.5. Tropical Cyclone Forecasting, including marine-related hazards

This activity includes a single network of a Regional Centre and associated National Meteorological Centres (NMCs) within everyTropical Cyclone Regional Body.

Regional centres participating in activity 2.2.5, tropical cyclone forecasting, shall:

-Monitor continuously meteorological phenomena such as convective activities to predict or detect tropical cyclone formation;

-Analyze and forecast tropical cyclones based on all available observational data and forecasting guidance, including NWP/EPS and satellite-based products;

-Issue tropical cycloneadvisories to associated NMCs;

-As appropriate, add information in tropical cyclone advisories on hazardous phenomena associated with tropical cyclones such as heavy rains, strong winds and storm surges;

-Name tropical cycloneswhen they have been analyzed with maximum wind speeds of 34 knots or more;

-Conduct post-event analysisof tropical cyclones based on quality-assured observational dataand issue best-track data within an appropriate period of time (preferably on annual basis). Issue such data to the tropical cyclone community including the International Best Track Archive for Climate Stewardship.

-Promote research and development (R&D) and training in tropical cyclone analysis, forecasting and warning techniques.

National Meteorological Centres (NMCs) associated in activity 2.2.5 shall:

-Issue forecasts and warnings of tropical cyclones to threatened communities;

-Coordinate with national agenciesresponsible for disaster risk reduction;

-Provide relevant regional centres with observational data of tropical cycloneson a real-time basis.

All TC RSMCs and TCWC Darwin, which are designated as a Tropical Cyclone Advisory Centre (TCAC) by regional air navigation agreementwithin the framework of the tropical cyclone watch of ICAO, shall issue Tropical Cyclone Advisories for aviation in accordance with the provisions made in ICAO Annex 3- Meteorological Service for International Air Navigation/WMO Technical Regulations [C3.1]. SIGMET information concerning tropical cyclones shall be issued by Meteorological Watch Offices (MWO) for concerned flight information region and should be based on the tropical cyclone advisory information issued by the TCACs.

Members holding Metareas of their responsibility under the Global Maritime Distress and Safety System (GMDSS) protocols established by the International Convention of Safety Of Life At Sea (SOLAS) shall include information on tropical cyclones as needed in their GMDSS maritime weather information for shipping.

RESPONSIBILITY
CHANGES TO ACTIVITY SPECIFICATION
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To be approved by: / CBS / ?
To be decided by: / EC / Congress
CENTRES DESIGNATION
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COMPLIANCE
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To be reported to: / CBS / ?