Watches and Warnings are posted for the western coast of Western Australia over the next several days as Narelle continues to move on a southerly track, where it is expected to remain at sea, but parallel the coast.
This visible image of Tropical Cyclone Narelle was captured by the MODIS instrument aboard NASA's Aqua satellite on Jan. 10, 2013, at 0625 UTC. Narelle developed the tropical cyclone signature shape with a tight rounded center and bands of thunderstorms wrapping around.
Credit: NASA Goddard MODIS Rapid Response Team
Current Australian warnings include: a Cyclone Warning is in effect for coastal areas from Whim Creek to Coral Bay, including Karratha, Dampier, Onslow and Exmouth. A Cyclone Watch is in effect for coastal areas from Coral Bay to Cape Cuvier.A Blue alert is in effect for the coastal and island communities from Whim Creek to Mardie, including Wickham, Roebourne, Point Sampson, Karratha and DampiFor updated warnings and watches, visit the Australian Bureau of Meteorology web page: http://www.bom.gov.au/
When NASA's Aqua satellite passed over Narelle on Jan. 9 at 1811 UTC (1:11 p.m. EST/2:11 a.m. on Jan. 10, local time, Perth, Australia), the Atmospheric Infrared Sounder (AIRS) instrument captured data on the storm in infrared light. Infrared light shows temperature, and cloud top temperatures can indicate if clouds are reaching higher in the atmosphere (strengthening) or lower (weakening). AIRS data showed that the largest area of powerful thunderstorms were around the center, north and northwest of the center of circulation, an indication of where the heaviest rain was falling.
Another that flies aboard NASA's Aqua satellite called the Moderate Resolution Imaging Spectroradiometer (MODIS) instrument captured a visible image of Tropical Cyclone Narelle as it was approaching the northern coast of Western Australia. The image was taken on Jan. 10, 2013 at 0625 UTC (1:25 a.m. EST/2:25 p.m. local time, Perth, Australia). The MODIS image revealed that Narelle developed the signature shape of a tropical cyclone with a tight rounded center and bands of thunderstorms wrapping into the center.
On Jan. 10 at 1500 UTC (10 a.m. EST/11 p.m. local time, Perth), Tropical Cyclone Narelle had maximum sustained winds near 80 knots (92 mph/148.2 kph). It was centered near 16.5 south latitude and 114.7 east longitude, about 370 nautical miles north of Learmonth, Australia. Narelle has been moving south-southwest at 10 knots (11.5 mph/18.5 kph). Narelle is churning up rough seas, as high as 32 feet (9.7 meters), which will likely cause coastal erosion and flooding. Narelle is expected to continue moving to the south-southwest toward Northwest Cape and gradually intensify.
Infrared imagery, such as what AIRS provides shows that a new feeder band of thunderstorms has formed to the south of the center. Infrared data showed that cloud tops around the center have cooled, indicating convection (rising air forming the thunderstorms that make up the cyclone) has strengthened, and cloud tops are higher and the storms more powerful. Microwave satellite data, which can see through clouds, showed that an eye was forming in the center. The JTWC forecasters call for Narelle to continue intensifying as it moves south, and peak around 115 knots (132.3 mph/213 kph) sometime on Jan. 12 before weakening again.
New forecast guidance from the Joint Typhoon Warning Center (JTWC) now calls for the west coast of Western Australia to experience Tropical Cyclone Narelle's rainfall, gusty winds and rough surf. The JTWC forecast now takes Narelle close to the coast from north of Learmonth to the peninsula south of Perth, where it is now expected to make landfall in the South West region of Western Australia on Jan. 15 after tracking south through Geographe Bay.
Rob Gutro | EurekAlert!
In times of climate change: What a lake’s colour can tell about its condition
21.09.2017 | Leibniz-Institut für Gewässerökologie und Binnenfischerei (IGB)
Did marine sponges trigger the ‘Cambrian explosion’ through ‘ecosystem engineering’?
21.09.2017 | Helmholtz-Zentrum Potsdam - Deutsches GeoForschungsZentrum GFZ
At the productronica trade fair in Munich this November, the Fraunhofer Institute for Laser Technology ILT will be presenting Laser-Based Tape-Automated Bonding, LaserTAB for short. The experts from Aachen will be demonstrating how new battery cells and power electronics can be micro-welded more efficiently and precisely than ever before thanks to new optics and robot support.
Fraunhofer ILT from Aachen relies on a clever combination of robotics and a laser scanner with new optics as well as process monitoring, which it has developed...
Plants and algae use the enzyme Rubisco to fix carbon dioxide, removing it from the atmosphere and converting it into biomass. Algae have figured out a way to increase the efficiency of carbon fixation. They gather most of their Rubisco into a ball-shaped microcompartment called the pyrenoid, which they flood with a high local concentration of carbon dioxide. A team of scientists at Princeton University, the Carnegie Institution for Science, Stanford University and the Max Plank Institute of Biochemistry have unravelled the mysteries of how the pyrenoid is assembled. These insights can help to engineer crops that remove more carbon dioxide from the atmosphere while producing more food.
A warming planet
Our brains house extremely complex neuronal circuits, whose detailed structures are still largely unknown. This is especially true for the so-called cerebral cortex of mammals, where among other things vision, thoughts or spatial orientation are being computed. Here the rules by which nerve cells are connected to each other are only partly understood. A team of scientists around Moritz Helmstaedter at the Frankfiurt Max Planck Institute for Brain Research and Helene Schmidt (Humboldt University in Berlin) have now discovered a surprisingly precise nerve cell connectivity pattern in the part of the cerebral cortex that is responsible for orienting the individual animal or human in space.
The researchers report online in Nature (Schmidt et al., 2017. Axonal synapse sorting in medial entorhinal cortex, DOI: 10.1038/nature24005) that synapses in...
Whispering gallery mode (WGM) resonators are used to make tiny micro-lasers, sensors, switches, routers and other devices. These tiny structures rely on a...
Using ultrafast flashes of laser and x-ray radiation, scientists at the Max Planck Institute of Quantum Optics (Garching, Germany) took snapshots of the briefest electron motion inside a solid material to date. The electron motion lasted only 750 billionths of the billionth of a second before it fainted, setting a new record of human capability to capture ultrafast processes inside solids!
When x-rays shine onto solid materials or large molecules, an electron is pushed away from its original place near the nucleus of the atom, leaving a hole...
19.09.2017 | Event News
12.09.2017 | Event News
06.09.2017 | Event News
25.09.2017 | Power and Electrical Engineering
25.09.2017 | Health and Medicine
25.09.2017 | Physics and Astronomy