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Manila Takes Brunt of Typhoon Rammasun, China Next Target

By By Eric Leister, Meteorologist
July 17, 2014, 12:45:37 AM EDT

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In the western Pacific, Typhoon Rammasun, locally named Glenda, has emerged into the South China Sea after tracking across the Philippines on Tuesday night and early Wednesday, local time.

Rammasun will bring some additional downpours to the western Philippines through Wednesday night, but the heaviest rainfall has ended. Metro Manila experienced 4-8 inches of rain from the typhoon through Wednesday evening, local time.

At 7 a.m. local time on Wednesday, the Ninoy Aquino Airport on the south side of Manila recorded a wind gust to 113 kph (70 mph).

The typhoon has left at least 20 people dead and has forced financial markets, offices and schools to shut down in Manila, according to National Disaster Risk Reduction and Management Council of the Philippines.


Rammasun strengthened to a typhoon on Monday under favorable environmental conditions of warm ocean water temperatures (30-31°C or 86-88°F) and generally low wind shear.

Rammasun continued to strengthen into Tuesday with peak winds around 125 mph when the cyclone made landfall in southeast Luzon.

The heaviest rain in the eastern Philippines totaled 150-250 mm (6-10 inches) across parts of Samar Island, in northern Visayas and southeast Luzon. Some of the hardest hit areas include Legaspi, Catarman and Catbalogan.

So far, Legaspi has received 294.4 mm (11.6 inches) of rain, the highest rainfall amount reported in the Philippines so far.

Despite crossing the Philippines, Rammasun remained in tact as a formidable typhoon. Now that Rammasun is back over the open waters of the South China Sea on Wednesday, the system is expected to slowly become better organized.

While the typhoon is moving over very warm ocean waters, moderate wind shear is limiting the strength of the storm at this time.

The typhoon will move west-northwest across the South China Sea taking the cyclone near Hainan by late Friday.

Wind shear is expected to weaken as the cyclone moves toward China, allowing it to strengthen again before making another landfall.

Rammasun will then bring the threat for flooding rain and damaging winds to southern China with the greatest impacts likely in Hainan, southern Guangdong and southern Guangxi provinces.

AccuWeather.com Western Pacific Typhoon Center
Rammasun Targets Manila; Another Tropical Threat Looms
China Weather Center

Rammasun will then track into northern Vietnam where it will quickly weaken this weekend. Even though it will weaken after making landfall, widespread flooding is expected across southern China and northern Vietnam. Mudslides will also be a major concern as the storm moves into an area of more rugged terrain.

Continue to check back with the AccuWeather.com Hurricane Center for the latest on Rammasun and its effects in the Philippines and, eventually, into China and Vietnam.

Another tropical disturbance, currently to the southwest of Guam, could target the northern Philippines early next week.

Meteorologists Adam Douty and Erik Pindrock contributed to this story.

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