NASA's Aqua satellite passed overhead early in the day and captured a visible image showing Heidi's center still north of the Pilbara coast, while her outer bands continue to bring rainfall and gusty winds to coastal residents.
NASA's Aqua satellite passed over Heidi on Jan. 11, 2012, at 02:30 UTC (Jan. 10 at 10:30 a.m. EST) and captured a visible image of the storm. The image showed that Heidi maintained her well-rounded shape and her center was just north of the Pilbara Coast of Western Australia. Credit: NASA Goddard MODIS Rapid Response Team
NASA's Aqua satellite passed over Heidi on January 11, 2012 at 02:30 UTC (Jan. 10 at 10:30 a.m. EST) and the Moderate Resolution Imaging Spectroradiometer captured a visible image of the storm. The image showed that Heidi maintained her well-rounded shape and her center was just north of the Pilbara Coast of Western Australia at that time.
There are several warnings in effect in Australia as Heidi approaches. According to the Australian Bureau of Meteorology (ABM), a Cyclone Warning is active for "coastal areas from Wallal to Dampier, including Port Hedland, Roebourne, Karratha and Dampier, and extends to adjacent inland parts." In addition, a Red Alert is up for the "coastal and island communities between Pardoo and Whim Creek, including the communities of Pardoo, Port Hedland, South Hedland, and Whim Creek." A Blue Alert is in effect for the "coastal and island communities between Whim Creek and Dampier, including the communities of Roebourne, Pt Samson, Karratha, and Dampier."
At 1500 UTC (10 a.m. EST) Heidi's maximum sustained winds have increased to 55 knots (63 mph/101 kmh. Heidi's center was still off-shore at about 45 nautical miles (52 miles/83 km) north-northeast of Port Hedland, Australia near 19.6 South and 118.9 East. Heidi was moving slowly at 4 knots (5 mph/7 kph) to the south-southwest.
NASA's Atmospheric Infrared Sounder (AIRS) instrument captured an image of Heidi at the same time as the MODIS instrument because they fly aboard the same satellite. The infrared data showed that Heidi was becoming more tightly wound. Forecasters using the AIRS data at the Joint Typhoon Warning Center noted that there is "convection gathering more directly over the top of the system."
Heidi is expected to strengthen a little more before making landfall because it's in an area of low vertical wind shear (winds that can weaken a storm or tear it apart) and sea surface temperatures warmer than needed to maintain a tropical cyclone. The sea surface temperatures off the Pilbara coast are near 30 degrees Celsius (86 F) and only 26.6C (80F) is needed to sustain a tropical cyclone. Anything warmer adds power to the cyclone through evaporation.
The ABM's forecast track for Heidi can be seen on their website at: http://www.bom.gov.au/products/IDW60281.shtml.
Heidi is expected intensify until it makes landfall. Landfall is expected today between Port Hedland and Point Samson. Heidi is expected to weaken after landfall as it heads to the south-southwest over the next couple of days.
Rob Gutro | EurekAlert!
Climate satellite: Tracking methane with robust laser technology
22.06.2017 | Fraunhofer-Gesellschaft
How reliable are shells as climate archives?
21.06.2017 | Leibniz-Zentrum für Marine Tropenforschung (ZMT)
An international team of scientists has proposed a new multi-disciplinary approach in which an array of new technologies will allow us to map biodiversity and the risks that wildlife is facing at the scale of whole landscapes. The findings are published in Nature Ecology and Evolution. This international research is led by the Kunming Institute of Zoology from China, University of East Anglia, University of Leicester and the Leibniz Institute for Zoo and Wildlife Research.
Using a combination of satellite and ground data, the team proposes that it is now possible to map biodiversity with an accuracy that has not been previously...
Heatwaves in the Arctic, longer periods of vegetation in Europe, severe floods in West Africa – starting in 2021, scientists want to explore the emissions of the greenhouse gas methane with the German-French satellite MERLIN. This is made possible by a new robust laser system of the Fraunhofer Institute for Laser Technology ILT in Aachen, which achieves unprecedented measurement accuracy.
Methane is primarily the result of the decomposition of organic matter. The gas has a 25 times greater warming potential than carbon dioxide, but is not as...
Hydrogen is regarded as the energy source of the future: It is produced with solar power and can be used to generate heat and electricity in fuel cells. Empa researchers have now succeeded in decoding the movement of hydrogen ions in crystals – a key step towards more efficient energy conversion in the hydrogen industry of tomorrow.
As charge carriers, electrons and ions play the leading role in electrochemical energy storage devices and converters such as batteries and fuel cells. Proton...
Scientists from the Excellence Cluster Universe at the Ludwig-Maximilians-Universität Munich have establised "Cosmowebportal", a unique data centre for cosmological simulations located at the Leibniz Supercomputing Centre (LRZ) of the Bavarian Academy of Sciences. The complete results of a series of large hydrodynamical cosmological simulations are available, with data volumes typically exceeding several hundred terabytes. Scientists worldwide can interactively explore these complex simulations via a web interface and directly access the results.
With current telescopes, scientists can observe our Universe’s galaxies and galaxy clusters and their distribution along an invisible cosmic web. From the...
Temperature measurements possible even on the smallest scale / Molecular ruby for use in material sciences, biology, and medicine
Chemists at Johannes Gutenberg University Mainz (JGU) in cooperation with researchers of the German Federal Institute for Materials Research and Testing (BAM)...
19.06.2017 | Event News
13.06.2017 | Event News
13.06.2017 | Event News
26.06.2017 | Life Sciences
26.06.2017 | Physics and Astronomy
26.06.2017 | Information Technology