
AI-generated summary
After entering autumn, Taiwan has been significantly affected by the northeast monsoon. Recently, two waves of monsoon have alternated. At the same time, there are tropical disturbances in the South China Sea. It is necessary to observe its development direction and impact on Taiwan's weather.
Meteorological experts pointed out that today and tomorrow the first wave of the northeast monsoon will gradually weaken, the water vapor will decrease, and the temperature in various places will gradually rise. However, there will still be heavy rainfall in places in Greater Taipei and the eastern half. As for the second wave of northeast monsoon relay reporting next Monday, it is expected to affect next Wednesday. (Picture taken from "Teacher Lin Weather Station" Facebook)
Meteorological experts pointed out that today and tomorrow the first wave of the northeast monsoon will gradually weaken, the water vapor will decrease, and the temperature in various places will gradually rise. However, there will still be heavy rainfall in places in Greater Taipei and the eastern half. As for the arrival of the second wave of the northeast monsoon relay next Monday, it is expected that there will be local short-term showers in the northern and eastern areas of the windward side until next Wednesday, and there will also be rainfall in other areas in the afternoon. In addition, there is a tropical disturbance brewing in the South China Sea today and tomorrow, and it is expected to move towards Vietnam.
Lin De'en, a doctor of atmospheric sciences at National Taiwan University, posted on Facebook "Teacher Lin Weather Station" that the first wave of the northeast monsoon that originally affected Taiwan's weather in autumn will begin to weaken today and tomorrow. Coupled with the decrease in ambient water vapor, temperatures in various places have gradually begun to rise. In terms of rainfall, there are occasional rains in eastern Taiwan and afternoon showers in western Taiwan.
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"Teacher Lin Weather Station" stated that later in autumn, the second wave of northeast monsoon relay will arrive, with the following three main features. First, 1. The impact will be from Monday to Wednesday next week (9/14 to 9/16).
Second, during this period, high temperatures are forecast to be between 30 and 33 degrees Celsius in the central and southern parts, and 27 to 31 degrees Celsius in the north, northeast, and eastern half of the windward side, as well as the Penghu, Kinmen, and Matsu areas on the outlying islands. Low temperatures are forecast to be between 23 and 26 degrees Celsius in all parts of Taiwan and the Penghu, Kinmen, and Matsu areas.
Third, there are opportunities for local short-lived showers in the north, northeast and eastern half of the windward side; other areas will maintain cloudy weather patterns, with rain mostly occurring in the afternoon, with intermittent short-lived rains being the main ones, very localized and sporadic, and without the possibility of causing disasters.
Wu Derong, adjunct associate professor of the Department of Atmosphere, National Central University, wrote a column in the "Meteorological Application Promotion Foundation" today. He pointed out that for two days over the weekend (12th and 13th), tropical disturbances were brewing in the South China Sea. The winds near Taiwan turned easterly and moisture increased gradually on the east side. Today, there is a chance of short-lived showers in Greater Taipei and the eastern half, with some heavy rain in places. It will be sunny and cloudy in the western half, with a chance of scattered rain in the mountainous areas in the afternoon. Tomorrow, there is a chance of occasional short-lived showers in the east and eastern half of Greater Taipei. In the western half, it will be sunny and cloudy, with a chance of scattered rain in the mountainous areas in the afternoon. The temperature is rising day by day, and the western half will be hot during the day. The maximum temperature in the north will rise to about 33 degrees today, and to 36 degrees in the central and southern parts. Tomorrow, the temperature in the north will rise another 2 degrees, to about 35 degrees. Today's temperatures in various regions are as follows: 23 to 33 degrees in the north, 22 to 36 degrees in the center, 23 to 36 degrees in the south, and 24 to 33 degrees in the east.
Wu Derong said that from next Monday to Wednesday (14th to 16th), another small northerly wind will increase the moisture, and there will be a chance of local short-term showers in the northern and eastern half. The central and southern parts will be sunny and cloudy; next Tuesday and Sanbei will have a slightly cooler daytime temperature, while the central and southern parts will still be hot during the day. Next Thursday and Friday (17th and 18th) the northeasterly wind will weaken, it will be cloudy when it becomes sunny in the western half, and there is an occasional chance of short-lived showers in the eastern half. It will be hot during the day and slightly cool at night.
Wu Derong explained that a tropical disturbance is brewing in the South China Sea today and tomorrow (12th and 13th), has not developed, and is generally heading in the direction of Vietnam. Another tropical disturbance will develop to the east of Guam in the second half of the week (after the 16th), and will be another strong station in the Year of the Holy Child. However, because it is a simulation of late-stage trends, the uncertainty is already great, and the specific development still needs to be continuously observed.
AI outlook — possibilities, not facts
The second wave of northeast monsoon will affect Taiwan from next Monday to Wednesday (9/14 to 9/16). There will be local brief showers in the northern and eastern half, and it will be sunny and cloudy in the central and southern parts.
Likely · Within days
Tropical disturbances in the South China Sea will move towards Vietnam and will not have a direct impact on Taiwan.
Likely · Within days

Today and tomorrow, the northeast monsoon will gradually weaken, and the water vapor will decrease and the temperature will rise; from Monday, the northeast monsoon will strengthen again, and the north and northeast will turn to cloudy and sometimes cloudy showers, and the temperature will drop slightly. The central, southern and southeastern areas will have little impact, and it will still be cloudy to sunny with local brief thundershowers in the afternoon, and it will be hot during the day and have a large temperature difference between morning and evening.

The Central Meteorological Administration pointed out that the northeast monsoon weakened today, and it was still slightly cooler in the morning and evening in various places. On the windward side, there were local brief showers on the north coast of Keelung, the eastern half, the Hengchun Peninsula and greater Taipei. It was cloudy to sunny in other areas, and there were also local showers in the afternoon. The temperature difference between day and night was large in the western half, with daytime temperatures rising to 32 and 33 degrees south of Taoyuan, and high temperatures in the eastern half. Maintained at 30 and 31 degrees; in terms of air quality, the central part is "orange alert", the north, Zhumiao, Yunjianan, Gaoping and other places are "average", Yilan and Huadong are "good"; the northeast monsoon will increase or decrease in the next week, the high temperature in northern Taiwan will drop slightly, and there will still be local showers in the afternoon in many places. The development of the Pacific low pressure in the later period needs to be paid attention to.

Due to the continued influence of the northeast monsoon and the increase in moisture, rainfall has been widespread on the north coast of Taiwan, Yilan and other places. Tropical Disturbance 98W has developed in the South China Sea and may move to Vietnam. Wu Shengyu reminded that there will still be local showers in many places over the weekend, so you need to carry rain gear and pay attention to the safety of mountain streams.

The Kanto region of Tokyo experienced October-level chills on the 10th, with the highest temperature of only 22.5 degrees and the lowest temperature of 17.7 degrees, setting a record for the coldest autumn this year, even lower than Sapporo's 23.7 degrees. Temperatures dropped by more than 8 degrees, leading to chaos in streetwear, a surge in demand for hot food and a surge in use of laundry dryers. The Meteorological Administration forecasts that it will be colder on the 11th, reminding the public to pay attention to the temperature difference.

Affected by the northeast monsoon, there are local brief showers on the windward side of northern and eastern Taiwan. There are thermal convective rainfalls in the central and southern mountainous areas in the afternoon. The temperature distribution shows a difference between the north and the south. There will be a trend of tropical disturbance development in the ocean next week, which requires continuous observation.

Jia Xingxing, director of the Taiwan Integrated Disaster Prevention Engineering Technology Consulting Company, pointed out that due to the impact of the extremely strong Holy Ninja, Taiwan has a high probability of high temperatures from September to November, and rainfall signals converge from September to October, with mainly less rain. At the same time, sea temperatures at low latitudes have high heat content, and a monsoon trough is brewing. A dual system is brewing. Tropical depressions or typhoons may occur in the South China Sea and Guam. Industries such as agricultural water resources need to adjust their strategies.