Tropical cyclone (TC) precipitation exhibits strong regional dependence and arises from complex mechanisms. Here, our analysis of hourly data from 278 observational stations reveals a significant increasing trend in TC precipitation over the North China Plain from 1981 to 2024. The long-term increase is primarily driven by a remarkable surge in TC-induced precipitation amount since 2018. Specifically, the annual mean TC precipitation nearly quadrupled, rising from 23.62 mm during 1981–2017 to 90.76 mm in 2018–2024. A similar upward trend is also observed in TC-induced extreme precipitation, indicating that TCs contribute increasingly to the region’s total extreme precipitation. Mechanistically, the precipitation intensification results not from a slowdown in TC translation speed but rather from the significant elongation of individual TC tracks, which are characterized by a westward extension and deeper inland penetration. Such track alteration is attributed to an anomalous easterly steering flow linked to a mid-to-upper-level anticyclonic anomaly near Japan.

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