Saturday, September 10, 2011

Tropical Update

Note: Tropical Depression Kulap is now dissipating just south of Jeju Island in South Korea. Its remnants will still bring scattered showers and thunderstorms across Jeju and the Southern Korean Peninsula. Both the JMA and JTWC have given final warnings earlier this morning. Likewise, we'll no longer give updates on Kulap. However, we'll continue following the progress of the remaining convection from Kulap as they make their way to the north.

For weather information and latest radar image from South Korea, please click HERE

Aside from Kulap, we are also watching several disturbances and tropical systems across the Pacific and South China Sea.

We'll start with Invest 91W, now a Tropical Depression according to JMA. We'll probably start giving dedicated and regular updates on this system starting tomorrow. Right now, convection is still fragmented and has not wrapped around the whole circulation just yet. Invest 91W has a broad circulation akin to developing monsoon depressions (just like TS Talas) and that is why it could be slow to develop. Right now, maximum sustained winds around the system range from 35 to 55kph. 91W is moving westward at 15kph and is still far away from the Philippine Area of Responsibility. Numerous computer models are expecting it to continue developing in the coming days and is forecast to move near Okinawa late next week.

VIS Image for 91W from NLMRY

There is also another weak disturbance just off the coast of Luzon. It's not really expected to develop into anything significant although it is enhancing rain showers across Luzon and Visayas.

Finally, we have Invest 93W just off the coast of Vietnam in the South China Sea. The disturbance is largely disorganized and is embedded along the monsoon affecting Indochina. Computer models are also hinting at the possibility of a cyclone development in this region next week.

We'll have another update tomorrow!
Issued (0930 UTC) 530pm PhT 091011

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