Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Come Together, Right Now … Tropical Depression 18W Dissipates, Parma Intensifies

02.10.2009
Two tropical cyclones in the Western Pacific are keeping in tune to the 1969 hit song by the Beatles, "Come Together." Tropical Depression 18W and Tropical Storm Parma are already beginning to merge now that 18W made landfall in Guam and dissipated. 18W did bring gusty winds and heavy downpours to Guam, and will continue to affect the surf over the next day or two.

NASA's Aqua satellite flew over the two storms and captured them in one image (because they're close to each other). Parma is located west of 18W's remnants. The Atmospheric Infrared Sounder (AIRS) instrument on Aqua noticed high thunderstorms in Parma as cloud top temperatures were colder than -63 Fahrenheit, and Parma intensified into a typhoon. In 18W, satellite data showed warmer cloud top temperatures, indicating a much weaker system. AIRS captured an image of both storms on September 30 at 1:11 a.m. (Guam local time).

At 11 a.m. local time on September 30, 18W's center was 85 miles east-southeast of Guam. At that time, it had not yet made landfall and was headed toward Guam (Guam is 14 hours ahead of U.S. Eastern Daylight Time). 18W then made landfall in Guam in the afternoon hours (local time) on September 30, and has since weakened into a remnant low pressure area.

The U.S. Navy's Joint Typhoon Warning Center issued its final warning on 18W at 7 p.m. local time (5 a.m. EDT) today, after 18W had made landfall and crossed back into the Western Pacific Ocean. At that time, 18W's center 55 miles west-northwest of Guam, near 13.9 north and 144.0 east and its maximum sustained winds were down to 15 knots (17 mph). 18W's remnants were moving west-northwest near 21 knots (24 mph). That's going to bring the remnants toward Tropical Storm Parma quickly, causing Parma to absorb 18W's leftover energy.

At 7:30 p.m. Guam local time (9:30 a.m. EDT) on September 30 there were High Surf Warnings up for Guam, the Marianas Islands, and Micronesia until 6 p.m. (local time) on Thursday. The National Weather Service noted, "Large swells generated by tropical storm 18w before it weakened to a tropical depression will generate high surf on east facing reefs through Thursday afternoon. A high surf advisory means that high surf will affect exposed reefs and beaches in the advisory area producing dangerous rip currents. Expect hazardous surf of 10 to 12 feet Thursday on east facing reefs. The surf should subside below hazardous levels by Thursday evening."

Guam also posted a Small Craft Advisory in effect until 6 p.m. CHST (local time, Guam) on Thursday. A small craft advisory means that seas 10 feet or greater and sustained winds or frequent gusts of 22 knots (25 mph) or higher are expected to produce conditions hazardous to small craft.

As 18W dissipated, Tropical Storm Parma intensified into a typhoon. Typhoon Parma is located to the west of 18W's remnants, but close enough to draw its leftover energy.

On September 30 at 11 a.m. EDT (3 a.m. local time on October 1), Typhoon Parma had sustained winds near 75 knots (86 mph) and was moving west-northwest near 15 knots (17 mph). It was located about 160 miles north-northwest of the island of Palau. Tropical storm-force winds stretch out to 75 miles from the center, while typhoon/hurricane-force winds extend only 10 miles from the center. Meteorologists at the Philippine Atmospheric Geophysical and Astronomical Services Administration (Pagasa) are calling Typhoon Parma "Pepeng" in the Philippines.

On the current forecast track, Typhoon Parma will not make landfall in the northern Philippines, but its center will remain at sea as it passes to the northeast over the next several days. Because residents of the northern Philippines are still coping with the floodwaters generated from Tropical Depression Ondoy (Ketsana), another tropical cyclone is the last thing they need.

Text credit: Rob Gutro, NASA/Goddard Space Flight Center

Rob Gutro | EurekAlert!
Further information:
http://www.nasa.gov
http://www.nasa.gov/mission_pages/hurricanes/archives/2009/h2009_Parma.html#

More articles from Earth Sciences:

nachricht Heidelberg Researchers Study Unique Underwater Stalactites
24.11.2017 | Universität Heidelberg

nachricht Lightning, with a chance of antimatter
24.11.2017 | Kyoto University

All articles from Earth Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: New proton record: Researchers measure magnetic moment with greatest possible precision

High-precision measurement of the g-factor eleven times more precise than before / Results indicate a strong similarity between protons and antiprotons

The magnetic moment of an individual proton is inconceivably small, but can still be quantified. The basis for undertaking this measurement was laid over ten...

Im Focus: Frictional Heat Powers Hydrothermal Activity on Enceladus

Computer simulation shows how the icy moon heats water in a porous rock core

Heat from the friction of rocks caused by tidal forces could be the “engine” for the hydrothermal activity on Saturn's moon Enceladus. This presupposes that...

Im Focus: Nanoparticles help with malaria diagnosis – new rapid test in development

The WHO reports an estimated 429,000 malaria deaths each year. The disease mostly affects tropical and subtropical regions and in particular the African continent. The Fraunhofer Institute for Silicate Research ISC teamed up with the Fraunhofer Institute for Molecular Biology and Applied Ecology IME and the Institute of Tropical Medicine at the University of Tübingen for a new test method to detect malaria parasites in blood. The idea of the research project “NanoFRET” is to develop a highly sensitive and reliable rapid diagnostic test so that patient treatment can begin as early as possible.

Malaria is caused by parasites transmitted by mosquito bite. The most dangerous form of malaria is malaria tropica. Left untreated, it is fatal in most cases....

Im Focus: A “cosmic snake” reveals the structure of remote galaxies

The formation of stars in distant galaxies is still largely unexplored. For the first time, astron-omers at the University of Geneva have now been able to closely observe a star system six billion light-years away. In doing so, they are confirming earlier simulations made by the University of Zurich. One special effect is made possible by the multiple reflections of images that run through the cosmos like a snake.

Today, astronomers have a pretty accurate idea of how stars were formed in the recent cosmic past. But do these laws also apply to older galaxies? For around a...

Im Focus: Visual intelligence is not the same as IQ

Just because someone is smart and well-motivated doesn't mean he or she can learn the visual skills needed to excel at tasks like matching fingerprints, interpreting medical X-rays, keeping track of aircraft on radar displays or forensic face matching.

That is the implication of a new study which shows for the first time that there is a broad range of differences in people's visual ability and that these...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Ecology Across Borders: International conference brings together 1,500 ecologists

15.11.2017 | Event News

Road into laboratory: Users discuss biaxial fatigue-testing for car and truck wheel

15.11.2017 | Event News

#Berlin5GWeek: The right network for Industry 4.0

30.10.2017 | Event News

 
Latest News

IceCube experiment finds Earth can block high-energy particles from nuclear reactions

24.11.2017 | Physics and Astronomy

A 'half-hearted' solution to one-sided heart failure

24.11.2017 | Health and Medicine

Heidelberg Researchers Study Unique Underwater Stalactites

24.11.2017 | Earth Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>