A training workshop was held the Yasumoto International Academic Park of the Chinese University of Hong Kong during 20-22 July 2016. Renowned nowcasting experts Herbert Pumpel, George Isaac and Pilar Ripodas as well as HKO colleagues Ping-wah Li, Wai-kin Wong and Wang-chun Woo delivered a series of lectures to a dozen of international and local participants. The opportunity was also taken to promote the Com-SWIRLS.

At the invitation of the World Meteorological Organization, Mr Woo Wang-chun, Scientific Officer of HKO and a nowcasting expert, presented on nowcasting and very-short-range forecasting techniques in the 'Workshop on the Implementation of New Numerical Weather Prediction (NWP) and Impact-based Forecast and Warning Techniques' held at the Department of Meteorology and Hydrology (DMH), Myanmar during 6-9 September 2016. Representatives from various meteorological services and international organisations also participated in the workshop.

More than 20 aviation forecasters from all ASEAN countries with Flight Information Region (FIR) participated in the Training Workshop on SIGMET Coordination organized by the Hong Kong Observatory (HKO) on 4 – 6 December 2017. Mr. Wang-chun Woo of HKO introduced Com-SWIRLS to participants.

In each of 2012, 2013 and 2014, HKO provided training on the installation, configuration and use of the SWIRLS nowcasting system to participants of the Tropical Cyclone Research Fellowships (TCRF) scheme, who were attached to HKO for up to two months. Members of NMHSs from China (Macao), the Philippines, Malaysia, Vietnam and Thailand were trained through the provided opportunity. It led to the development of the QPF TC rainfall module, and laid the foundation for the successful implementations of SWIRLS in some of these countries.

HKO organized an international workshop on "Rainfall Nowcasting" under the Voluntary Cooperation Programme (VCP) of the World Meteorological Organization (WMO) during 7 – 11 December 2015, and took the opportunity to launch the community version of the SWIRLS nowcasting system ("Com-SWIRLS") for use by interested meteorological services around the world. The workshop was delivered by Dr Jenny Juanzhen Sun of the National Center for Atmospheric Research (NCAR), Mr Hidehiko Murata of Japan Meteorological Agency, as well as Mr Wong Wai-kin, Mr Woo Wang-chun and Mr Cheng Tsz-lo of HKO. It was attended by 22 trainees from 18 countries, including Argentina, China, Comoros, Fiji, Kazakhstan, Kuwait, Madagascar, Malaysia, Maldives, Mauritius, Mongolia, Myanmar, South Africa, Tajikistan, Thailand, Uganda, Uzbekistan and Zambia. A webinar was also set up for the first time at the VCP workshop to enable remote participation in the lectures by the forecast experts in Beijing, China.

More than 150 weather experts from over 20 countries and regions attended the World Meteorological Organization (WMO) World Weather Research Programme 4th International Symposium on Nowcasting and Very-short-range Forecast 2016 (WSN16) at the Yasumoto International Academic Park of the Chinese University of Hong Kong during 25 – 29 July 2016. The symposium was jointly hosted by the HKO, the Hong Kong Meteorological Society, and the Institute of Environment, Energy and Sustainability of the Chinese University of Hong Kong.