Weather Forecasts and Warnings

Weather Forecasts and Warnings


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The WMO World Weather Information Service, hosted by the Hong Kong Observatory,  is the source of the official information and warnings from the National Meteorological and Hydrological Services of Members.

World Weather Information SystemWorld Weather Information Service

Dynamic site for city and country forecast

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Tropical cyclones and severe weather forecastsSevere Weather Information Centre

Tropical cyclones and severe weather forecasts

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Gale warningsSevere Weather Information Centre

Gales and high winds

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MyWorldWeatherAppMyWorldWeather App

This application for Android and Apple is a mobile version of the World Weather Information Service (WWIS) equipped with location-based technology to automatically provide users with the official weather forecasts: 

Mobile apps

iPhone - Android

Data Collection or Production Centre for the World Weather Information Service

Data Collection or Production Centre for the World Weather Information Service

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MeteoAlarm Europe

Alerting Europe for extreme weather.

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Sand and Dust Storm Warning Advisory and Assessment System (Forecast Maps)

The WMO Sand and Dust Storm Project was initiated in 2004 and its Sand and Dust Storm Warning Advisory and Assessment System (SDS-WAS) was launched by the Fifteenth World Meteorological Congress in 2007.

Atmospheric composition forecast and assessments

CAMS forecasts charts demonstration provided to WMO by Copernicus Atmosphere Monitoring Service implemented by ECMWF on behalf of European Commission.

Related Information


Weather forecasts require observations of our environment around the clock and around the world. The bulk of those observations are carried out by National Meteorological Services as part of the WMO World Weather Watch, which networks the observing stations to national, regional and global weather and climate prediction centres 24 hours a day in real-time.


All life depends on a healthy planet, but the interwoven systems of atmosphere, oceans, watercourses, land, ice cover and biosphere, which form the natural environment, are threatened by human activities. The Global Atmosphere Watch (GAW) programme provides reliable scientific data and information on aerosols, greenhouse gases, selected reactive gases, ozone, ultraviolet radiation and precipitation chemistry (or atmospheric deposition).