- Algeria, Office National de la Météorologie.
- Argentina, Servicio Meteorológico Nacional
- Australia, Bureau of Meteorology, Melbourne, Victoria
- Austria, Central Institute for Meteorology and Geodynamics
- Belgium, The Royal Meteorological Institute of Belgium
- Bulgaria, National institute of Meteorology and Hydrology
- Brazil, Instituto Nacional de Meteolorogia (INMET)
- Brunei, The Brunei Meteorological Service
- Canada, Meteorological Service of Canada
- Chile , Direccion Meteorologica de Chile
- China , The China Meteorological Administration
- Colombia , Institute of Hydrology, Meteorology and Environment Studies
- Costa Rica, Instituto Meteorológico Nacional
- Croatia , Meteorological and Hydrological Service, Zagreb
- Cuba, Instituto de Meteorología
- Czech Republic, Czech Hydrometeorological Institute
- Denmark, The Danish Meteorological Institute
- Ecuador, Instituto Nacional de Meteorología e Hidrología
- Egypt, Egyptian Meteorological Authority
- Fiji, Fiji Meteorological Service
- Finland, The Finnish National Weather Service, The Finnish Meteorological Institute
- France, Météo-France, Toulouse
- Germany, The Deutscher Wetterdienst, Offenbach
- Hong Kong, China, Hong Kong Observatory
- Hungary, Hungarian Meteorological Service
- Iceland, The Icelandic Meteorological Office
- India, India Meteorological Department
- Indonesia, Indonesian Meteorological and Geophysical Agency
- Italy, Italian Air Force Meteorological Service
- Japan, Japan Meteorological Agency
- Kenya, Kenya Meteorological Department
- Republic of Korea, Korea Meteorological Administration
- Latvia, Latvian Hydrometeorological Agency
- Lithuania, Lithuanian Hydrometeorological Service
- Macao, Serviços Meteorológicos de Macau
- Malaysia, Malaysian Meteorological Service
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- Maroco, Direction de la Météorologie Nationale
- Mexico, Servicio Meteorológico Nacional
- Netherlands, Royal Netherlands Meteorological Institute, DeBilt
- New Zealand, Meteorological Service of New Zealand, Ltd. Wellington
- Norway, Norwegian Meteorological Institute
- Oman, Department of Meteorology
- Pakistan, Pakistan Meteorological Department
- Paraguay, Dirección de Meteorología e Hidrología del Paraguay
- Peru, Servicio Nacional de Meteorología e Hidrología
- Philippines, PAGASA (The Philippines Atmospheric, Geophysical & Astronomical Services Adm.)
- Poland, Institute of Meteorology and Water Management, (imgW)
- Portugal, Instituto de Meteorologia
- Romania, National Institute of Meteorology and Hydrology
- Russia, Russia Hydrometeorology
- Singapore, Meteorological Service Singapore, Singapore
- Slovakia, Slovak Hydrometeorological Institute
- Slovenia, Hydrometeorological Institute of Slovenia, Ljubljana
- South Africa, Weather Bureau, Pretoria
- Spain, Instituto Nacional De Meteorologia (INM)
- Swaziland, Swaziland Meteorological Service
- Sweden, Sweden Meteorology and Hydrology Institute
- Switzerland, Swiss Meteorological Institute
- Taiwan Central Weather Bureau
- Thailand, Meteorological Department of Thailand
- The former Yugoslav Republic of Macedonia, Hydrometeorological Institute
- Turkey, Devlet Meteoroloji Genel Müdürlüðü
- United Kingdom, The Meteorological Office, Bracknell
- Uruguay, Servicio de Oceanografía, Hidrografía y Meteorología de la Armada
- U.S.A., National Weather Service, Silver Spring, Maryland
- Venezuela, Dirección de Hidrología y Meteorología
- Yugoslavia, Federal Hydrometeorological Institute
- Zambia, Zambia Meteorological Department
- Zimbabwe, Department of Meteorological Services
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