The typhoons and the associated rainstorms in 2023 create big challenges to the weather forecasting and warning services. The movements of typhoons Saola and Koinu are not captured well by the conventional numerical weather prediction models. The heavy rain associated with Haikui and Koinu also results in historical rainfall records in Hong Kong.  However, the expectations from the public and the special users in Hong Kong for weather forecasting and warning services become much higher than before. This talk will briefly summarize the challenges of the forecasting services for these three typhoon cases in Hong Kong in 2023. In particular, the use of AI and a regional model appears to have potential to enhance the warning services, but their application values are still to be tested for more typhoon cases. 

Dr. P.W. Chan is the Director of the Hong Kong Observatory. He obtained PhD degree from City University of Hong Kong in 2023 with the study on wind engineering and low level wind shear for aviation applications.  Dr. Chan had been working at the Hong Kong International Airport for over 20 years, with research and operational efforts in airport meteorological instrumentation, low level windshear and turbulence alerting, and high resolution numerical weather prediction.  He is a visiting professor of a number of universities in the Chinese mainland and an adjunct associate professor of the University of Hong Kong.  He is a fellow of the Royal Meteorological Society and a Chartered Meteorologist. He has published more than 350 papers in SCIE journals, with a significant portion of the papers focusing on the applications at the airport. He is a vice chair of a steering group on meteorological measurements at the World Meteorological Organization and the chair of meteorology subgroup in Asia Pacific region of the International Civil Aviation Organization.