Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

NASA Satellites See Super-Typhoon Bopha Closing in on the Philippines

04.12.2012
Two NASA satellites gathered data as the passed over Bopha when it was a Super Typhoon on Dec. 2, gathering valuable data for forecasters.

Since Dec. 2, Bopha's maximum sustained winds have fluctuated up and down from its previous high of 155 mph and today, Dec. 3, the storm has reached its strongest point so far as a Category 5 typhoon on the Saffir-Simpson scale with sustained winds of 161 mph. Warnings are up for the Philippines as Bopha approaches.


At 0347 UTC on Dec. 3, NASA's TRMM satellite flew above a dangerous typhoon Bopha. Joint Typhoon Warning Center (JTWC) to hit the island of Mindinao in the Philippines with winds of 135 kts (155 mph) later today. This 3-D image from TRMM's Precipitation Radar showed some strong convective thunderstorms on the eastern side of Bopha's eye were reaching heights of over 16 km (~9.94 miles). A TRMM analysis showed that Bopha had a well-defined eye with very heavy rain falling at a rate of over 80mm/hr (~3.1 inches) falling in the eye and in intense rain bands spiraling around the eye.
Credit: NASA/SSAI, Hal Pierce

NASA's Terra satellite captured a visible image of Bopha as a Super Typhoon showing the extent of the storm and revealing the eye of the storm. NASA's Tropical Rainfall Measuring Mission (TRMM) satellite captured rainfall rates, identified areas of heavy rainfall, and measured cloud heights.

Tracking Typhoon Bopha Over Time

On Dec. 1 at 1000 p.m. CHST (1200z/7 a.m. EST/U.S.) the center of Typhoon Bopha was located near latitude 5.4 degrees north and longitude 140.1 degrees east. That placed Bopha's center about 270 miles southeast of Ngulu and about 315 miles south-southeast of Yap. Maximum sustained winds were up to 130 mph. When NASA's TRMM satellite passed over Typhoon Bopha at 0402 UTC on Dec. 1 (Nov. 30 at 11:02 p.m. EST/U.S.) it captured an image of the storm that clearly revealed an eye. It also showed tight circulation and an expanded area of very heavy rainfall located from southwest to southeast of the center of circulation where rain was falling at a rate of 2 inches/50 mm per hour.

The next day, Dec. 2, 2012 at 0145 UTC (Dec. 1 at 7:45 p.m. EST), the Moderate Resolution Imaging Spectroradiometer (MODIS) instrument on NASA's Terra satellite captured a visible image of Super Typhoon Bopha approaching the Philippines. The visible image showed a tightly wound center of circulation, with the eye obscured by high clouds. At the time of this image, Bopha's maximum sustained winds were near 155 mph, a powerful Category 4 super typhoon on the Saffir-Simpson scale.

NASA's TRMM satellite captured rainfall data on Super typhoon Bopha on Dec. 2 at 1435 UTC (9:35 a.m. EST) and showed areas of heavy rainfall spanned from the northeast to the southern quadrant of the eye. The heaviest rain was falling at a rate of more than 2 inches (50 mm) per hour.

On Dec. 3 at 1 p.m. CHST local time, (0300 UTC/10 p.m. EST/U.S., Dec. 2) the eye of Typhoon Bopha was located near latitude 6.9 degrees north and longitude 130.9 degrees east. This is about 140 miles northwest of Sonsorol and 240 miles west of Koror. At that time, maximum sustained winds had dropped to 120 mph.

Six hours later, Bopha had again intensified as its maximum sustained winds were up to 130 mph. Bopha's typhoon-force-winds extend outward up to 35 miles from the center, or 70 miles in diameter. Tropical-storm-force winds have a much greater reach and extend outward up to120 miles from the center, making tropical-storm force winds reach over 240 miles in diameter.

At 7 p.m. CHST local time (0900 UTC/4 a.m. EST, U.S.) on Dec. 3, the National Weather Service in Guam reported that "the eye of Typhoon Bopha was located near latitude 7.0 degrees north and longitude 129.7 degrees east. That put the center about 210 miles northwest of Sonsorol, 325 miles west of Koror and 350 miles west-southwest of Kayangel. Typhoon Bopha was moving west at 14 mph and expected to turn to the west-northwest. The National Weather Service in Guam issued their final advisory on the storm with this position, and forecasting for the storm will be covered by the Joint Typhoon Warning Center and the Philippine Atmospheric, Geophysical and Astronomical Services Administration known as PAGASA.

Bopha Now a Category 5 on the Saffir-Simpson Scale

Bopha reached Category 5 status on the Saffir-Simpson Scale for the first time today, Dec. 3. Over the last several days it peaked at a powerful Category 4 typhoon. On Dec. 3 at 1500 UTC (10 a.m. EST, U.S.), Bopha had regained Super Typhoon status as maximum sustained winds increased to 140 knots (161 mph/259 kph). Bopha was located near 7.6 north latitude and 128.2 east longitude, about 630 nautical miles (725 miles/1,167 km) southeast of Manila, Philippines. Bopha is moving to the west-northwest at 16 knots (18.4 mph/29.6 kph). Infrared satellite imagery shows a well-developed, intense system that has a 9 nautical-mile (10.3 mile/16.6 km) wide eye.

Current warnings in the Philippines

All regional warnings for the Federated States of Micronesia have been canceled and replaced by warnings for the Philippines. In the Philippines, Bopha has been given the name "Pablo," and local updates from PAGASA can be found at: http://www.pagasa.dost.gov.ph/wb/tcupdate.shtml.

PAGASA posted Public Storm Warning signal #3 over the Mindanao provinces of Surigao del Norte and Sur, Siargao, Dinagat Province, Agusan del Norte and Sur, Misamis Oriental, Camiguin, Bukidnon, Davao Oriental, Compostela Valley, Davao del Norte and Samal Island. In addition, Public Storm Warning Signal #2 is effect in the Mindanao provinces of Misamis Occidental, Lanao del Norte and Sur, North Cotabato, Davao del Sur and Zamboanga del Norte; and in the Visayas provinces of Southern Leyte, Bohol, Southern Cebu, Negros Oriental and Siquijor. Public storm warning signal #1 is in effect for the Mindanao provinces of Zamboanga del Sur, Maguindanao, Sultan Kudarat, Sarangani and South Cotabato; the Visayas provinces of Eastern and Western Samar, Leyte, Biliran, Aklan, Capiz, Antique, Iloilo, Guimaras, Negros Occidental, Rest of Cebu and Camotes Island; the Luzon provinces of Northern Palawan, Calamian group of islands and Cuyo Island.

The Joint Typhoon Warning Center expects Bopha to make landfall in the Visayas region of the Philippines around 2300 UTC on Dec. 3 (6 p.m. EST, U.S.) and weaken as it moves on a west-northwest to northwesterly track through central Mindanao before exiting into the South China Sea.

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

Rob Gutro | EurekAlert!
Further information:
http://www.nasa.gov/mission_pages/hurricanes/archives/2012/h2012_Bopha.html

More articles from Earth Sciences:

nachricht Global study of world's beaches shows threat to protected areas
19.07.2018 | NASA/Goddard Space Flight Center

nachricht NSF-supported researchers to present new results on hurricanes and other extreme events
19.07.2018 | National Science Foundation

All articles from Earth Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Future electronic components to be printed like newspapers

A new manufacturing technique uses a process similar to newspaper printing to form smoother and more flexible metals for making ultrafast electronic devices.

The low-cost process, developed by Purdue University researchers, combines tools already used in industry for manufacturing metals on a large scale, but uses...

Im Focus: First evidence on the source of extragalactic particles

For the first time ever, scientists have determined the cosmic origin of highest-energy neutrinos. A research group led by IceCube scientist Elisa Resconi, spokesperson of the Collaborative Research Center SFB1258 at the Technical University of Munich (TUM), provides an important piece of evidence that the particles detected by the IceCube neutrino telescope at the South Pole originate from a galaxy four billion light-years away from Earth.

To rule out other origins with certainty, the team led by neutrino physicist Elisa Resconi from the Technical University of Munich and multi-wavelength...

Im Focus: Magnetic vortices: Two independent magnetic skyrmion phases discovered in a single material

For the first time a team of researchers have discovered two different phases of magnetic skyrmions in a single material. Physicists of the Technical Universities of Munich and Dresden and the University of Cologne can now better study and understand the properties of these magnetic structures, which are important for both basic research and applications.

Whirlpools are an everyday experience in a bath tub: When the water is drained a circular vortex is formed. Typically, such whirls are rather stable. Similar...

Im Focus: Breaking the bond: To take part or not?

Physicists working with Roland Wester at the University of Innsbruck have investigated if and how chemical reactions can be influenced by targeted vibrational excitation of the reactants. They were able to demonstrate that excitation with a laser beam does not affect the efficiency of a chemical exchange reaction and that the excited molecular group acts only as a spectator in the reaction.

A frequently used reaction in organic chemistry is nucleophilic substitution. It plays, for example, an important role in in the synthesis of new chemical...

Im Focus: New 2D Spectroscopy Methods

Optical spectroscopy allows investigating the energy structure and dynamic properties of complex quantum systems. Researchers from the University of Würzburg present two new approaches of coherent two-dimensional spectroscopy.

"Put an excitation into the system and observe how it evolves." According to physicist Professor Tobias Brixner, this is the credo of optical spectroscopy....

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Leading experts in Diabetes, Metabolism and Biomedical Engineering discuss Precision Medicine

13.07.2018 | Event News

Conference on Laser Polishing – LaP: Fine Tuning for Surfaces

12.07.2018 | Event News

11th European Wood-based Panel Symposium 2018: Meeting point for the wood-based materials industry

03.07.2018 | Event News

 
Latest News

A smart safe rechargeable zinc ion battery based on sol-gel transition electrolytes

20.07.2018 | Power and Electrical Engineering

Reversing cause and effect is no trouble for quantum computers

20.07.2018 | Information Technology

Princeton-UPenn research team finds physics treasure hidden in a wallpaper pattern

20.07.2018 | Materials Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>