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Tropical Storm Son-tinh to lash Vietnam, Laos after flooding China and Philippines

July 17, 2018; 8:30 AM

After passing over Hainan, Tropical Storm Son-tinh has its sights set on northern parts of Vietnam and Laos in the coming days.

As this storm tracks westward, the greatest risk for flooding and local damaging winds will increase from northern Vietnam and Laos into Thursday.

Son-tinh 7-18

Mudslides may further endanger lives and property in the mountains.

Flooding rainfall will be the most widespread threat as rainfall of 75-150 mm (3-6 inches) will be widespread from Hainan into northern Vietnam and Laos. This includes the Vietnam capital of Hanoi and the Laos capital of Vientiane. Hardest-hit areas can expect rainfall amounts up to 250 mm (10 inches).

The risk for damaging winds will be limited to areas near the Vietnam coast where Son-tinh makes landfall.

Areas at risk for damaging winds include locations between Vinh and Thanh Hoa late Wednesday night into Thursday morning.

Son-tinh will weaken as it moves farther inland, ending the threat for any damaging winds before the storm reaches northern Laos.

Rough seas will also be stirred and create dangers for boaters as the storm churns across the Gulf of Tonkin.

Vietnam Weather Center
Interactive weather satellite
Laos Weather Center

All residents at risk for impacts from this budding storm are urged to closely monitor its progress. Be sure to follow the advice of local government and heed any evacuation orders in the coming days. Keep gas tanks filled and cell phones fully charged.

The storm was named Henry in the Philippines where it produced heavy rainfall across parts of Luzon earlier this week.

Phillipines flooding July 17

A man carries a girl along a flooded street in Malabon, metropolitan Manila, Philippines, Tuesday, July 17, 2018. (AP Photo/Aaron Favila)

Despite Son-Tinh departing, heavy rain will continue to fall across western Luzon in the coming days, furthering the threat for flooding.

Residents in Manila will have to remain vigilant for flooding to inundate parts of the capital quickly and bring travel to a halt for a time.

Remember to avoid a potentially deadly situation by never driving or walking through floodwaters.

Son-tinh plowed across Hainan, China on Wednesday unleashing heavy rainfall and damaging winds. Travel disruption was reported, including street flooding a halt to ferry services.

The rainfall was beneficial for areas that did not receive flooding as the region has been dealing with drought conditions.

"In the longer range, conditions will remain favorable for tropical development over the northwestern Pacific through the end of July," AccuWeather Senior Meteorologist Jason Nicholls said. "There will be the chance of development later next week and next weekend to the east of the Ryukyu Islands."

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