Flooding downpours threaten Taiwan in advance of potential impacts from Typhoon Mangkhut

12-Sep-2018 Intellasia | ACCU Weather | 6:00 AM Print This Post

A tropical depression near southern Taiwan will threaten the country with flooding downpours in advance of potential impacts from Typhoon Mangkhut.

This depression strengthened from an area of tropical low pressure on Monday near southern Taiwan and has since been bringing rounds of rain to portions of the country.

The depression, along with the Mei-yu front, has already produced heavy rain across northern Taiwan on Saturday when an excess of 300 mm (12 inches) of rain fell across portions of New Taipei and Taipei cities.

The deluge continued on Sunday as additional rain fell across the area. A two-day rainfall total in Shilin District, along the northern coast of Taiwan, reached nearly 500 mm (20 inches).

Downpours such as this are expected to continue into Tuesday, though will concentrate largely to the south of Taipei.

The heaviest rain and most likely areas to have flooding will be across eastern and southern parts of the island as a tropical low slowly passes nearby early in the week.

It remains possible that this depression could strengthen into a tropical storm as it pulls away from southern Taiwan. If this does organise into a tropical storm, gusty winds will be felt across southern Taiwan in areas such as Taitung, Pingtung and Kaohsiung counties. The depression would also gain the name Barijat.

Wind, however, is not expected to get strong enough to cause damage. Regardless of the amount of tropical development, flooding downpours will still threaten.

If this low does not organise into a tropical cyclones near Taiwan, it will become more likely to form once across the South China Sea on Tuesday or Wednesday.

After the tropical low pulls away from Taiwan, residents of not only Taiwan but also the Philippines and southeastern China will have to monitor strengthening Typhoon Mangkhut.

AccuWeather Senior Meteorologist Dave Houk expects Mangkhut to remain a powerful typhoon even after it passes Guam and Mariana Islands early in the week. There is the potential that Mangkhut could be near the intensity of a Category 5 hurricane in the eastern Pacific and Atlantic oceans, thus becoming a super typhoon.

Residents from Guam to Saipan were being battered by Mangkhut on Monday, with peak wind gusts in Guam of 130 km/h (81 mph). Stronger winds, possibly up to 195 km/h (120 mph), are likely near the centre of the storm to the north, towards the United States Northern Mariana Islands and the city of Rota.

In addition to the damaging winds, wind-whipped rainfall up to 250 mm (10 inches) can lead to flash flooding.

Beyond the mainly open waters of the Pacific, Houk said, “A west-to-northwest path will continue the rest of the week with the likelihood of a strengthening typhoon into the Philippine Sea.”

Residents from the northern Philippines into Taiwan and southeastern China should closely monitor the track of Mangkhut and begin making preparations as there is the potential for the cyclone to remain very dangerous as it barrels towards southeastern Asia late this week and into the weekend.

https://www.accuweather.com/en/weather-news/flooding-downpours-threaten-taiwan-in-advance-of-potential-impacts-from-mangkhut/70006009

 


Category: Taiwan

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