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Update on Tropical Storm ‘Koinu’ in Western Pacific Ocean: Potential Impact on Taiwan and China, No Impact on Thailand at Present

Meteorological Department Updates on Tropical Storm ‘Koinu’ (KOINU)

The latest update from the Meteorological Department reveals the intensification of a tropical cyclone in the Western Pacific Ocean this morning (30 September 2023). The depression has transformed into Tropical Storm ‘Koinu’ (KOINU) and is expected to move towards the northwest in its initial phase. This trajectory indicates a potential movement towards Taiwan Island, followed by a coast-hugging path along China towards Hainan Island. However, it is anticipated that the storm will weaken upon reaching upper Vietnam, sparing Thailand from any direct impact for now. It is important to stay vigilant and monitor the changing directions as the situation evolves.

About ‘KOINU’

The name ‘KOINU’ holds significance as it translates to “small dog” in Japanese. This particular storm is recognized as the 14th storm according to the RSMC storm count in Tokyo, Japan.

Daily Rain Forecast for the Next 10 Days

According to the European Center for Medium Range Weather Forecasts (ECMWF), the daily accumulated rain forecast for the period between 30 September and 9 October 2023 indicates heavy rainfall in the northern region today (30 September 2023). Areas near the low pressure region in Myanmar, particularly in the western region, should exercise caution as heavy rain may lead to flash floods. Although rainfall has started to decrease in other regions, the lingering monsoon trough across central Thailand and the low pressure area in the South China Sea can still result in sporadic heavy downpours. In the southern region, especially along the monsoon side, wind waves are expected to ease in the bay, while moderate waves may persist in the Andaman Sea.

Outlook for 1-5 October 2023

During the period between 1st and 5th October 2023, the monsoon trough will shift southwards, affecting the lower central region (including Bangkok and surrounding areas), upper east, and south regions. Along with the proximity of the low pressure area near the coast of Vietnam in South China, these areas can anticipate continued rainfall. It is crucial to remain cautious of the potential accumulation of rain along the monsoon trough and in the vicinity of the low pressure region.

Situation from 6-9 October 2023

As we look towards the situation during 6th-9th October 2023, the tropical cyclone in the Pacific Ocean has escalated into a tropical storm known as ‘KOINU’. Projected to move northwest in its initial phase towards Taiwan, followed by a coastline trajectory along China towards Hainan Island, it is expected to weaken once it reaches upper Vietnam. At present, Thailand is not expected to be affected by the storm. It is important to note that this information is subject to change based on newly imported data, considering the prevailing El Niño phenomenon, which can cause fluctuations in rainfall patterns and storm formations. These updates should be considered for decision-making purposes.

Meteorological Department Update on the situation tropical cyclone In the Western Pacific Ocean this morning (30 September 2023) depression increased in strength Tropical Storm ‘Koinu’ (KOINU) It is likely to move towards the northwest in the first phase. Directions to Taiwan Island and move along the coast of China towards Hainan Island. It is expected to weaken once it reaches upper Vietnam. There is no impact on Thailand at this time. which need to be followed from time to time The direction also changes.

‘KOINU’ (KOINU) mean small dog Name the Japanese name This is the 14th storm according to the RSMC storm count, Tokyo, Japan.

Daily accumulated rain forecast 10 days ahead between 30 September – 9 October 2023. Update from the European Center for Medium Range Weather Forecasts (ECMWF): Today (30 September 2023) is still another day in the northern region. still is Heavy rain There are some places, especially in the western area near the low pressure area in Myanmar. You have to be wary of heavy rain and the accumulation it can cause flash flood Flash flood Yes, in other regions, the rain has started to decrease somewhat. But it can still happen. Because the monsoon trough is still crossing the central area of ​​Thailand. Entering the low pressure area in the South China Sea For the southern region, there will be some places, especially on the monsoon side. The wind waves will begin to ease in the bay. But there are still moderate waves in the Andaman Sea.

During 1-5 October 2023, the monsoon trough will turn down across the lower central region. (Bangkok and surrounding areas) Upper East and South Regions Entering the low pressure area in South China near the coast of Vietnam. Rain can, and will continue to fall. Along the monsoon trough and near the low pressure area Continue to be cautious of accumulated rain.

Part 6-9 October 2023 situation tropical cyclone In the Pacific Ocean at the moment The depression has intensified to tropical storm ‘KOINU’ (KOINU) It is likely to move northwest in the first phase towards Taiwan. and move along the coast of China towards Hainan Island. It is expected to weaken when it reaches upper Vietnam. There is no impact on Thailand at this time. (This information may change based on new data imported. Under the conditions of the year that the El Niño phenomenon occurred which causes rain and storms to change use for decision making)

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