Tag Archives: China

Tropical Storm Kujira Forms South of Hainan Island

A surface circulation organized within a larger area of thunderstorms east of Vietnam on Saturday and the system was designated as Tropical Storm Kujira.  At 11:00 p.m. EDT on Saturday the center of Tropical Storm Kujira was located at latitude 15.7°N and longitude 111.4°E which put it about 210 miles (340 km) east of Da Nang, Vietnam.  Kujira was moving north-northwest at 3 m.p.h. (5 km/h).  The maximum sustained wind speed was 40 m.p.h. (65 km/h) and there were wind gusts to 60 m.p.h. (95 km/h).  The minimum surface pressure was 998 mb.

Tropical Storm Kujira is moving over water where the Sea Surface Temperature is near 30°C.  However an upper level ridge over southern Asia is generating northeasterly winds over the top of Kujira.  Those northeasterly winds are producing moderate vertical wind shear, which is causing most of the stronger thunderstorms to be located in the western half of the circulation.  Some spiral bands are beginning to form and a band is wrapping around the southern side of the center of circulation.  It appears that Kujira is becoming more well organized and intensification is likely, although the wind shear could slow that process.

Kujira is in an area where the steering currents are weak.  The tropical storm is near the western end of a subtropical ridge and the highest probability is that it will move north toward Hainan Island and southern China.  Some numerical models project a landfall on Hainan Island, but others have Kujira passing east of the island before making landfall on the coast of China.  In either scenario Kujira could approach Hainan Island in 24 to 36 hours.

Tropical Storm Fung-Wong Near Taiwan

At 5:00 p.m. EDT on Saturday the center of Tropical Storm Fung-Wong was located at latitude 21.5°N and longitude 120.0°W which put it about 250 miles south-southwest of Taipei Taiwan.  Fung-Wong was moving just slightly east of due north at 8 m.p.h.  The maximum sustained wind speed was 60 m.p.h. and there were gusts to 75 m.p.h.

Fung-Wong will likely move near or across Taiwan during the next few hours.  Locally heavy rainfall will be possible, especially in locations where the circulation around Fung-Wong pushes air up the slopes of mountains.  Flooding may be an issue in areas that experience heavy rainfall.  The heaviest rainfall will likely occur on the eastern slopes of mountains as Fung-Wong moves across southern Taiwan and brings easterly winds to those areas.  However, the potential for flooding along the western slopes of mountains, especially in northern Taiwan, may exist as the tropical storm moves north of the island and the wind shifts to a more westerly direction.

Fung-Wong will likely weaken as the circulation in the lower levels is disrupted by the mountains.  It could maintain tropical storm intensity and move toward eastern China once the center emerges back over the water.