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NASA Peers Into One of Earth's Strongest Storms Ever

Nov 08, 2013
NASA's Atmospheric Infrared Sounder (AIRS) instrument on NASA's Aqua spacecraft captured these infrared images of Super Typhoon Haiyan at 8:59 p.m. PST Nov. 7 (left) and 9:17 a.m. PST Nov. 8 (right). The storm's coldest cloud-top temperatures and areas of heaviest rainfall are depicted by the brightest shades of purple.
Credit: NASA/JPL-Caltech
Visible image of Super Typhoon Haiyan acquired from NASA's Atmospheric Infrared Sounder (AIRS) instrument on NASA's Aqua spacecraft at 8:59 p.m. PST, Nov. 7.
Credit: NASA/JPL-Caltech
Super Typhoon Haiyan's ocean surface winds were measured by the OSCAT radar scatterometer on the Indian Space Research Organization's OceanSAT-2 satellite at 5:30 p.m. PST on Nov. 6. The colors indicate wind speed and arrows indicate wind direction.
Credit: ISRO/NASA/JPL-Caltech

New images from NASA and Indian satellites dissect Super Typhoon Haiyan, one of the strongest storms ever recorded on Earth.

New satellite images just obtained from NASA's Atmospheric Infrared Sounder (AIRS) instrument aboard NASA's Aqua spacecraft and the Indian Space Research Organization's OceanSAT-2 ocean wind scatterometer provide a glimpse into one of the most powerful storms ever recorded on Earth.

According to the U.S. Navy Joint Typhoon Warning Center, Typhoon Haiyan had maximum sustained winds of 195 mph (314 kilometers per hour), with gusts up to 235 mph (379 kilometers per hour) shortly before making landfall in the central Philippines today. That would make it one of the strongest storms ever recorded. Weather officials in the Philippines reported the storm, known locally as Typhoon Yolanda, came ashore with maximum sustained winds of 147 mph (235 kilometers per hour) and gusts of up to 170 mph (275 miles per hour).

The two AIRS images, acquired at 8:59 p.m. PST on Nov. 7 (left) and 9:17 a.m. PST on Nov. 8 (right), show the powerful storm in infrared. When the image on the left was acquired, the storm was located 214 miles (344 kilometers) south-southeast of Manila. By the time the image on the right was acquired, the fast-moving storm was already centered west of the Philippines, on a forecast track that will take it to Vietnam. The storm's coldest cloud-top temperatures are indicated by the brightest shades of purple, and show where Haiyan's heaviest rainfall was occurring.

Another image, from the OSCAT radar scatterometer on the Indian Space Research Organization's OceanSAT-2 satellite, shows Haiyan's ocean surface winds at 5:30 p.m. PST on Nov. 6. The wind data were calculated by scientists at NASA's Jet Propulsion Laboratory, Pasadena, Calif., using an advanced wind retrieval algorithm designed for tropical cyclone conditions. The colors indicate wind speed and arrows indicate wind direction. The wind speeds were measured in 15-by-15-mile (24-by-24-kilometer) boxes that recorded a maximum value of 128 miles, or 206 kilometers, per hour). That's why these wind speeds are lower than the maximum small-scale winds calculated by the U.S. Navy Joint Typhoon Warning Center.

For more information on AIRS, visit: http://airs.jpl.nasa.gov/ .

News Media Contact

Alan Buis

818-354-0474

alan.buis@jpl.nasa.gov

2013-326

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