Taiwan braces for a week of heavy rainfall as monsoon and front bring abundant moisture

Taiwan is bracing for a week of significant rainfall as a stationary front and monsoon system are set to bring abundant moisture starting Monday. The Central Weather Administration forecasts that the weather system will bring widespread rain across the island, with some regions potentially facing "purple alerts" indicating extremely heavy downpours.

Forecaster Lin Ting-yi stated that while a low-pressure system will move away by Sunday, localized showers will persist. Sunday will see the island influenced by a low-pressure trough, with chances of brief showers or thunderstorms in the central and southern parts. Other areas may experience localized afternoon thunderstorms. Eastern Taiwan, situated in a convergence zone of the low-pressure trough, is particularly susceptible to short-duration heavy rain or downpours due to topographical effects.

Starting Monday, a new front will approach, coupled with strengthening southwesterly winds. This will bring showers or thunderstorms to the central and southern regions, as well as localized showers to the north and northeast. Afternoon showers are expected in other areas, with potential for heavy rain in central and southern mountainous regions. From Tuesday to Friday, the combination of the plum rain front and the southwest monsoon will create extremely wet conditions, with heavy to torrential rains anticipated in western and northeastern Taiwan, as well as in the mountainous areas of the east and southeast. Other regions will experience brief showers or thunderstorms, continuing into the following weekend.

The weather administration also released a two-week "monthly long-term weather outlook." The forecast indicates that during the first week, Taiwan will experience rain influenced by the stationary front and monsoon, with heavier localized rain in the west. In the second week, the front is expected to linger near Taiwan, but a westward extension of the Pacific high-pressure system may cause the front to shift northward, leading to reduced rainfall. During the plum rain season, convective rainfall triggered by fronts can bring intense weather phenomena like sudden downpours, prompting the weather administration to advise residents to stay informed of the latest forecasts.