Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

NASA sees Tropical Cyclone Winston U-turn toward Fiji

19.02.2016

Tropical Cyclone Winston made a U-turn in the Southern Pacific Ocean just north of Niue, and appears to be headed back toward Fiji.

On Feb. 18, the gale warning for Niue has been cancelled now that Winston has moved west. However, a tropical cyclone alert is in force for Fiji, specifically the Lau group, Taveuni, Lomaiviti group, eastern half of Viti Levu, Kadavu. In Tonga warnings remain in effect. A storm warning is in effect for Vava'u and a gale warning is in effect for Niuatoputapu, Ha'apai, Tongatapu and 'Eua.


On Feb. 18 at 12:41 UTC (7:41 a.m. EST) NASA-NOAA's Suomi NPP satellite showed Winston had a large eye with tightly curved, strong bands of thunderstorms wrapping into the center.

Credits: NASA/NOAA/NRL

At 1500 UTC (10 a.m. EST) on Feb. 18, Tropical Cyclone Winston's maximum sustained winds were near 100 knots (115.1 mph/185.2 kph). It was a Category 3 hurricane on the Saffir-Simpson Wind Scale, making it a major hurricane. Winston was located near 17.1 degrees south latitude and 172.3 degrees west longitude, about 182 nautical miles northwest of Niue. Winston was moving to the west at 7 knots (8 mph/12.9 kph) and generating wave heights to 28 feet (8.5 meters).

On Feb. 18 at 12:41 UTC (7:41 a.m. EST) NASA-NOAA's Suomi NPP satellite passed over Tropical Cyclone Winston and the Visible Infrared Imaging Radiometer Suite (VIIRS) instrument aboard saw very strong thunderstorms around the eye. Infrared date from VIIRS showed a large eye with tightly curved, strong bands of thunderstorms wrapping into the center. Strongest thunderstorms and coldest cloud tops were in the northwestern quadrant. Temperatures in storms there were as cold as minus 80 degrees Fahrenheit (minus 62.2 Celsius).

Animated enhanced infrared satellite imagery showed that Winston has a large, ragged eye with cloud-top cooling observed within the eye wall over six hours before 1500 UTC. When cloud top temperatures cool it means that the air is rising faster and stronger than before, pushing cloud tops higher into the troposphere (where temperatures are colder). Cooling cloud tops are an indication of a strengthening storm.

The Joint Typhoon Warning Center (JTWC) forecast expects Winston to strengthen to 110 knots (126.6 mph/203.7 kph) and then begin on a weakening trend from Feb. 19 as it tracks over cooler sea surface temperatures. By Feb. 20, Winston is forecast to run into increasing vertical wind shear which will also help to weaken the system.

JTWC calls for Winston to move closest to southern Fiji on Feb. 21. It is then expected to turn southeast. For updated warnings and information from the Fiji Meteorological Service, visit: http://www.met.gov.fj/aifs_prods/20036.txt.

Rob Gutro | EurekAlert!

More articles from Earth Sciences:

nachricht Clear as mud: Desiccation cracks help reveal the shape of water on Mars
20.04.2018 | Geological Society of America

nachricht Hurricane Harvey: Dutch-Texan research shows most fatalities occurred outside flood zones
19.04.2018 | European Geosciences Union

All articles from Earth Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: Spider silk key to new bone-fixing composite

University of Connecticut researchers have created a biodegradable composite made of silk fibers that can be used to repair broken load-bearing bones without the complications sometimes presented by other materials.

Repairing major load-bearing bones such as those in the leg can be a long and uncomfortable process.

Im Focus: Writing and deleting magnets with lasers

Study published in the journal ACS Applied Materials & Interfaces is the outcome of an international effort that included teams from Dresden and Berlin in Germany, and the US.

Scientists at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) together with colleagues from the Helmholtz-Zentrum Berlin (HZB) and the University of Virginia...

Im Focus: Gamma-ray flashes from plasma filaments

Novel highly efficient and brilliant gamma-ray source: Based on model calculations, physicists of the Max PIanck Institute for Nuclear Physics in Heidelberg propose a novel method for an efficient high-brilliance gamma-ray source. A giant collimated gamma-ray pulse is generated from the interaction of a dense ultra-relativistic electron beam with a thin solid conductor. Energetic gamma-rays are copiously produced as the electron beam splits into filaments while propagating across the conductor. The resulting gamma-ray energy and flux enable novel experiments in nuclear and fundamental physics.

The typical wavelength of light interacting with an object of the microcosm scales with the size of this object. For atoms, this ranges from visible light to...

Im Focus: Basel researchers succeed in cultivating cartilage from stem cells

Stable joint cartilage can be produced from adult stem cells originating from bone marrow. This is made possible by inducing specific molecular processes occurring during embryonic cartilage formation, as researchers from the University and University Hospital of Basel report in the scientific journal PNAS.

Certain mesenchymal stem/stromal cells from the bone marrow of adults are considered extremely promising for skeletal tissue regeneration. These adult stem...

Im Focus: Like a wedge in a hinge

Researchers lay groundwork to tailor drugs for new targets in cancer therapy

In the fight against cancer, scientists are developing new drugs to hit tumor cells at so far unused weak points. Such a “sore spot” is the protein complex...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Invitation to the upcoming "Current Topics in Bioinformatics: Big Data in Genomics and Medicine"

13.04.2018 | Event News

Unique scope of UV LED technologies and applications presented in Berlin: ICULTA-2018

12.04.2018 | Event News

IWOLIA: A conference bringing together German Industrie 4.0 and French Industrie du Futur

09.04.2018 | Event News

 
Latest News

Magnetic nano-imaging on a table top

20.04.2018 | Physics and Astronomy

Start of work for the world's largest electric truck

20.04.2018 | Interdisciplinary Research

Atoms may hum a tune from grand cosmic symphony

20.04.2018 | Physics and Astronomy

VideoLinks
Science & Research
Overview of more VideoLinks >>>