Elsewhere in Weather News: September 29th, 2013

Wutip Forms, Typhoon Usagi Update

This week the Northwest Pacific typhoon season continues to be active as another typhoon – typhoon Wutip – has spun up in the South China Sea and is tracking westward. Although this is good news for the residents of Hong Kong and southern China who have been affected by last week’s typhoon, Vietnam will now have to closely monitor Wutip. As of Friday night Wutip was only a high-end tropical cyclone but is expected to slowly continue to strengthen over the open waters of the South China Sea. It will likely only have enough time to strengthen to a category one typhoon before it makes landfall near the city of Da Nang. Still, residents of Vietnam will have to watch for storm surge that could wreak havoc in low lying coastal areas as well as flooding; much rain will be associated with Wutip. It’s expected that Wutip will make landfall Sunday night.

Wutip

Infrared enhanced image of Wutip on Friday night. A bit of dry air to the south-east of it’s center but very cold tops (white) near it’s center as it was attempting to organize itself. (Source: CIMSS)

The storm talked about in last week’s EIWN, typhoon Usagi, has caused significant damage to coastal areas of China, in the Guangdong province. In total, 25 people have died in China due to landslides triggered by the heavy rains and storm surge. Search and rescue teams are still looking for survivors in the mud though, and cleanup efforts are now underway. Usagi made landfall 140km to the north-west of Hong Kong; there it brought with it sustained winds of 175km/h which gusted to over 200km/h. In Hong Kong over 200 flights had to be cancelled. Although once a powerful super typhoon, Usagi is no more as it moved over China’s mainland and fell apart this past week.

Elsewhere in Weather News: September 21st, 2013

Super Typhoon Usagi Takes Aim at Hong Kong

The strongest typhoon of the year up to date has formed in the Pacific and is taking aim at Hong Kong. Super typhoon Usagi is currently located in the Luzon Strait between Taiwan and the Philippines and is moving in a west north-westerly fashion. Thursday and Friday morning, Usagi was packing sustained winds of around 260km/h – considered category five strength. It has since slightly weakened but is still a dangerous category four super typhoon as it eyes (no pun intended) Hong Kong and the southern coast of China.

Usagi

Awesome image of Usagi Thursday afternoon. (Source: Colorado State University/Capital Weather)

This super typhoon is not only a very powerful typhoon but also a very large one; its diameter reaching over 1,000km. A very distinct eye could be seen on satellite as well as more than one eyewall present; it is not as common for a tropical system to have more than one eyewall, though it does happen with storms of category three or higher.

Usagi is expected to make landfall sometime on Sunday along the south China shores. Its impacts remain to be seen though, with seas expected reaching 10 meters in the South China Sea all vessels will have to steer clear or dock. Another concern is the rainfall; already copious amounts of rain have fallen in Taiwan, especially on its east coast where about a meter of rain was not out of the question before the weekend’s end.

In addition to Usagi, a second typhoon is expected to form this weekend behind (to the east) of Usagi, it will be named Pabuk. Although still a ways out, Pabuk has a good chance at becoming a severe typhoon due to the warm sea surface temperatures and low shear in the area. Currently, the models show Pabuk reaching the eastern shores of Japan but then quickly curving back out to sea – this would suggest minimal impacts to Japan.