Amidst the backdrop of global warming,rainstorms have become increasingly frequent in North China,posing significant threats to both the socio-economic fabric and health and safety of the population.The convergence of the subtropical high over the northwestern Pacific and Typhoons “Dussuri” (No.5) and “Kanu” (No.6) in 2023 precipitated an extreme rainstorm event in North China from 08:00 BST on July 29 to 08:00 BST on August 2,2023,resulting in considerable social disruption.Utilizing hourly precipitation data from national meteorological stations provided by the National Meteorological Information Center of the China Meteorological Administration,this study analyzes the temporal and spatial distributions of hourly heavy rainfall (HHR) and statistically compare three types of heavy rainfall events(HREs)with varying durations to elucidate their characteristics.The findings indicate that:(1) HHR during this event exhibited high intensity and localized patterns,contributing over 20％ to the total precipitation.Areas such as the eastern foothills of the Taihang Mountains,including western Beijing and central and southwestern Hebei,recorded the highest precipitation amounts and the most active precipitation frequencies.The dual typhoons facilitated sustained water vapor transport to the North China Plain,which was enhanced by orographic lifting by the Taihang Mountains,promoting the persistence and intensification of HHR.(2) HHR experienced 6 periods,with the third peak showing the highest cumulative precipitation,frequency,and longest duration.During the stages influenced by the “Dussuri” residual vortex,warm shear lines,and easterly winds,as well as southerly or southwestern jets,HHR was most active during the stage associated with the “Dussuri” residual vortex,totaling 257 occurrences with a maximum precipitation of 73.5 mm.(3) Among the three HRE types,long-duration events (>12.hours) were most frequent,accounting for 54.5％,followed by short-duration events (1—6 hours) at 32.9％,and medium-duration events (7—12.hours) at 12.6％.Precipitation amounts for long-duration HREs typically exceeded 180 mm,while those for short and medium durations are mostly ranged from 20 to 60 mm.(4) Spatial analyses show that long-duration HREs had higher frequencies and precipitation amounts compared to shorter events.Beijing and Hebei were particularly prone to high precipitation amounts and frequencies during long-duration events.This study underscores critical role of the Taihang Mountain's terrain in influencing HHR during heavy rainstorm events in North China,suggesting that the mechanisms driven by refined terrain features warrant further detailed investigation.Future studies could employ numerical simulation experiments to delve deeper into these dynamics.