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Hurricane Season 2008: Tropical Storm 01W (Western Pacific)
01.14.08
 


Jan. 16, 2008

Tropical Depression 01W Fading Near Vietnam

Satellite image of Tropical Depression 01W Credit: NASA/JPL
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Tropical Depression (TD) 01W was quickly losing steam and energy as it trudged toward Vietnam.

On Wed. January 16 at 1500 UTC (10:00 a.m. EST), TD 01W was extremely weak with maximum sustained winds of 15 knots (17 mph). At that time, it was located about 280 miles south-southeast of Ho Chi Minh, Vietnam and was tracking southwest at 10 knots (11 mph). That time also marked the final bulletin from the Joint Typhoon Warning Center on 01W, as it was expected to dissipate shortly thereafter.

NASA's Aqua satellite carries the Atmospheric Infrared Sounder (AIRS) instrument, and AIRS captured this image of fizzling Tropical Depression 01W on Jan. 15 at 18:29 UTC or 1:29 a.m. local time.

The AIRS image shows the temperature of the cloud tops and the surface of the Earth in cloud-free regions. The lowest temperatures (in purple) are associated with high, cold cloud tops associated with the lingering showers and thunderstorms. 01W's clouds and rains are seen in the round purple and blue area.

The infrared signal does not penetrate through clouds. Where there are no clouds the AIRS instrument reads the infrared signal from the surface of the Earth, revealing warmer temperatures (red). The sharp lines around the rectangular image are the outlying borders of the "picture" AIRS captured.

Text credit: Rob Gutro, NASA's Goddard Space Flight Center



Jan. 14, 2008

Tropical Storm 01W Nears Vietnam

Satellite image of Tropical Storm 01W Credit: NASA/JPL
> Larger image
Tropical Storm 01W is churning in the Western Pacific Ocean and is threatening to bring coastal Vietnam winds and heavy rains.

On Monday, Jan. 14 at 9:00 GMT (4:00 a.m. EST) 01W ("W" for Western Pacific) was located at 12.4 degrees north and 113.7 degrees east, or 260 miles east of Nha Trang, Vietnam. 01W had maximum sustained winds of 45 knots (52 mph) and was moving to the west-southwest near 12 knots (13 mph).

This system has intensified slightly overnight as it has moved west-southwest into unfavorable oceanic and atmospheric conditions. It is expected to dissipate close to the Vietnamese coastline.

This image of Tropical Storm 01W was created on Jan. 14 at 1:30 p.m. local time by data from the Atmospheric Infrared Sounder (AIRS), an instrument that flies aboard NASA's Aqua satellite.

This AIRS image shows the temperature of the cloud tops or the surface of the Earth in cloud-free regions. The lowest temperatures (in purple) are associated with high, cold cloud tops that make up the top of the storm. The infrared signal does not penetrate through clouds. Where there are no clouds the AIRS instrument reads the infrared signal from the surface of the Earth, revealing warmer temperatures (red).

Text credit: Rob Gutro, NASA's Goddard Space Flight Center; Ed Olsen, NASA's Jet Propulsion Laboratory