A southwest wind carrying abundant moisture is hitting Taiwan, causing extremely unstable atmospheric conditions across the island. The Central Weather Bureau warns that over the next week, influenced by a slowly northward-shifting low-pressure belt, rainfall will become significantly more frequent across all regions of Taiwan. In addition to sporadic development of strong convection, central and southern Taiwan may experience severe weather reaching 'torrential rain' levels. Furthermore, a tropical depression over the sea southeast of Guam continues to strengthen and is expected to officially become this year’s newest typhoon—likely named Saudel—by tonight through tomorrow morning, though its subsequent movement remains highly uncertain.
Seven consecutive days of heavy rain across Taiwan due to southwest flow moisture surge — central and southern regions must remain vigilant against torrential rains and severe weather
Meteorologist Wu Derong, in his column 'Leak the Heavenly Mechanism Classroom,' noted that the latest European model simulations show the northward shift of the low-pressure belt driving moist southwest winds. From today through the 24th, rainfall across Taiwan will become increasingly pronounced. While daytime highs will slightly drop during these days, all regions must remain especially alert for lightning strikes, strong gusts, and sudden intense downpours. The weather fan page 'WeatherRisk' also warned that over the weekend (system 94W), the low-pressure zone will gradually approach waters east of Taiwan, while a strong southwest wind axis closely skimming Taiwan will create extremely unstable conditions:
Central and southern regions: Directly impacted by the southwest wind, weather will be overcast with intermittent showers or thunderstorms. Continuous vigilance against thunderstorms and heavy rain is required throughout the day. Rainfall in some areas may reach 'torrential rain' levels, and residents in mountainous areas must strictly guard against flooding and landslides.
Northern and eastern regions: Overcast with occasional clouds and brief showers. Afternoon thunderstorms will develop vigorously in mountainous areas across the island, creating chances for short-duration heavy downpours.
Wu Derong pointed out that from the 25th to the 27th, although the Pacific high-pressure system will gradually strengthen, short-lived thunderstorms or afternoon showers will still need to be monitored in central and southern Taiwan and Taitung. Accurate forecasts will depend heavily on Typhoon Saudel’s final track and its interaction with surrounding atmospheric conditions.
Rainfall trend for the coming week. (Image / Provided by Central Weather Bureau)
Latest path of Typhoon Saudel and its projected impact on Taiwan revealed
Latest path of Typhoon Saudel. (Image / Screenshot from CWB official website)
Wu added that this year’s 18th typhoon, 'Saudel,' is expected to move generally northwest toward the Ryukyu Islands over the next five days, with intensity possibly increasing to that of a severe typhoon. However, Saudel’s forward speed is expected to slow significantly, likely beginning a turn to the north near the Ryukyu area. Currently, different ensemble models show very divergent path simulations, leaving substantial uncertainty about its future course. The Central Weather Bureau and experts will continue close monitoring.
FACT BOX
- Source: PR Times
- Category: News