Luzon expecting a Lupit landfall

Oct 20, 2009
This microwave image from NASA's Aqua satellite shows cold areas (yellow-green) in Lupit, indicating precipitation or ice in the cloud tops. The microwave image suggests cold, high thunderstorms, and Lupit's center is surrounded by the blue inner circle in the image. Credit: NASA JPL, Ed Olsen

Typhoon Lupit is closing in on northern Luzon, the Philippines, and is expected to make a brief landfall (of about 24 hours) there October 22 before heading into the South China Sea.

Forecasters at the U.S. Navy's Joint Typhoon Warning Center noted "As the system moves away from the cooler dry air into a warmer pool of water, it is expected to intensify slightly before making landfall into Luzon." Landfall for the storm's eye is forecast around 8 p.m. local (Asia/Manila) time on October 22, which would be around 8 a.m. EDT.

As of 11 a.m. EDT (11 p.m. Asia/Manila Time) on October 20 Lupit had near 85 knots. It was located about 560 miles northeast of Manila, near 20.5 North and 128.9 East. It was moving west near 9 mph. Lupit, called "Ramil" in the Philippines, is generating 33 foot-high waves in the open ocean.

NASA's Aqua satellite flew over Lupit, and the Atmospheric Infrared Sounder (AIRS) instrument on Aqua captured infrared, visible and of the .

measures temperatures and not only can it see cold, high cloud tops in , but also the warm ocean waters that power the cyclones (if the sea surface temperatures are over 80F). Cold cloud top temperatures provide clues about the power of the thunderstorms in a tropical cyclone. The colder the clouds are, the higher they are, and the more powerful the thunderstorms are that make up the cyclone. Lupit's cloud temperatures were colder than minus 63 Fahrenheit, indicating very cold, high, strong thunderstorms, especially around its center of circulation.

AIRS data was coupled with data from the Advanced Microwave Sounding Unit (AMSU) that flies with AIRS on Aqua to create a microwave image. The AMSU image uses the radiances of the 89 GHz channel, and the cold areas in those images indicate where there is precipitation or ice in the cloud tops.

Warnings have already been posted in the Philippines. Public Storm Warning Signal 2 is in force in the following areas of Luzon: Batanes Group of Islands, Cagayan, Calayan Island, Babuyan Islands and Isabela. Public Storm Warning Signal 1 is in force in the following areas of Luzon: Ilocos Norte & Sur, Apayao, Abra, Kalinga, Mt. Province, Benguet, La Union, Ifugao, Nueva Vizcaya, Quirino, Aurora, Northern Quezon and Polillo Island.

Source: JPL/NASA (news : web)

Explore further: Soil nutrients may limit ability of plants to slow climate change

Related Stories

Super typhoon Lupit heading west in the Philippine Sea

Oct 19, 2009

Lupit has joined the ranks of super typhoons in the Western Pacific Ocean, and is currently packing maximum sustained winds near 132 mph, down from a previous peak near 149 mph, but still a Category Four strength ...

Recommended for you

Ocean currents impact methane consumption

13 hours ago

Large amounts of methane - whether as free gas or as solid gas hydrates - can be found in the sea floor along the ocean shores. When the hydrates dissolve or when the gas finds pathways in the sea floor to ...

Study shines new light on the source of diamonds

18 hours ago

A team of specialists from four Australian universities, including the University of Western Australia, has established the exact source of a diamond-bearing rock for the first time.

Source of Earth's ringing? French team views ocean waves

18 hours ago

Three researchers in France have authored "How ocean waves rock the Earth: Two mechanisms explain microseisms with periods 3 to 300 s," published in Geophysical Research Letters, a journal of the Americ ...

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.