October 21, 2025 | Taipei, Taiwan
Meteorological authorities have reported that northern Taiwan continues to experience significant rainfall due to the combined effects of Typhoon Fengshen’s outer circulation and the northeast monsoon. In the past 24 hours, cumulative rainfall has exceeded 500mm in Shilin and Beitou, Taipei, while areas in Yilan and New Taipei City recorded over 400mm.
Forecasters warn that the northeast monsoon, along with an associated low-pressure system, will continue to influence the region today. Areas expected to be most affected include Greater Taipei, the northern coast of Keelung, and Yilan. Heavy rainfall, at levels classified as “heavy” or above, remains likely.
Dr. Lin De’en, a doctoral student in atmospheric science at National Taiwan University, reported early this morning that 24-hour rainfall totals reached 576mm in Shilin and 505mm in Beitou. Other locations, including Nangang (Taipei), Nan’ao (Yilan), Xizhi (New Taipei), and Pingxi (New Taipei), also experienced rainfall exceeding 400mm. Strong wind gusts were observed as well, with Force 10 winds in northern Changhua, Keelung, and Yilan; Force 11 in New Taipei City and Taoyuan; and Force 12 recorded at Taipei Cultural University.
According to Lin’s Weather Station, while Typhoon Fengshen is gradually moving away, the northeast monsoon and low-pressure system will continue to dominate weather conditions. The pressure gradient is expected to peak from tonight into the first half of tomorrow, intensifying wind speeds. Authorities advise residents to remain vigilant and exercise extreme caution.
Meteorologist Zheng Mingdian also noted a noticeable drop in temperatures, adding that although early morning lows are moderate, the weather feels considerably cooler compared to recent daytime highs. He cautioned that rainfall today may not match yesterday’s intensity but will continue, and accumulated precipitation could still pose risks to outdoor activities.
Local authorities continue to monitor conditions closely and encourage the public to stay updated on weather advisories.