Wind shear is a major factor that can keep a tropical cyclone "down" or unable to consolidate and intensify because it keeps pounding the circulation of winds head on. Strong wind shear has been battering Tropical Cyclone 18S for a couple of days and is expected to continue the next couple of days.
An infrared look at Tropical Storm 18S by the AIRS instrument on NASA's Aqua satellite on Feb. 26, revealed wind shear continues to take its toll on the storm and keeps pushing its strongest (purple) precipitation away from the center of the storm. Credit: NASA JPL, Ed Olsen
On Feb. 26 at 1500 UTC (10 a.m. EST) Tropical Storm 18S was located about 1,000 nautical miles (1,151 miles/1,852 km) west-northwest of Learmonth, Australia, near 15.5 south and 98.0 east. TS18S still had maximum sustained winds near 35 knots (40.2 mph/64.8 kph) and was now moving to the south-southeast near 4 knots (4.6 mph/7.4 kph).
Satellite imagery shows that the main convection and thunderstorms are still being pushed away from the center of circulation from wind shear. Vertical wind shear has also caused the storm to stretch out making it difficult to find the center on satellite imagery. According to the Joint Typhoon Warning Center (JTWC), an analysis of the upper level winds showed that the tropical storm is in an area of strong (30-40 knot/34.5 to 46.0 mph/55.5 to 74.0 kph) easterly vertical wind shear.
Tropical Storm 18S is expected to drift under weak steering conditions for the next two days after which time another weather system will push the storm eastward toward Western Australia.Text Credit: Rob Gutro
Rob Gutro | EurekAlert!
Fossil coral reefs show sea level rose in bursts during last warming
19.10.2017 | Rice University
NASA finds newly formed tropical storm lan over open waters
17.10.2017 | NASA/Goddard Space Flight Center
University of Maryland researchers contribute to historic detection of gravitational waves and light created by event
On August 17, 2017, at 12:41:04 UTC, scientists made the first direct observation of a merger between two neutron stars--the dense, collapsed cores that remain...
Seven new papers describe the first-ever detection of light from a gravitational wave source. The event, caused by two neutron stars colliding and merging together, was dubbed GW170817 because it sent ripples through space-time that reached Earth on 2017 August 17. Around the world, hundreds of excited astronomers mobilized quickly and were able to observe the event using numerous telescopes, providing a wealth of new data.
Previous detections of gravitational waves have all involved the merger of two black holes, a feat that won the 2017 Nobel Prize in Physics earlier this month....
Material defects in end products can quickly result in failures in many areas of industry, and have a massive impact on the safe use of their products. This is why, in the field of quality assurance, intelligent, nondestructive sensor systems play a key role. They allow testing components and parts in a rapid and cost-efficient manner without destroying the actual product or changing its surface. Experts from the Fraunhofer IZFP in Saarbrücken will be presenting two exhibits at the Blechexpo in Stuttgart from 7–10 November 2017 that allow fast, reliable, and automated characterization of materials and detection of defects (Hall 5, Booth 5306).
When quality testing uses time-consuming destructive test methods, it can result in enormous costs due to damaging or destroying the products. And given that...
Using a new cooling technique MPQ scientists succeed at observing collisions in a dense beam of cold and slow dipolar molecules.
How do chemical reactions proceed at extremely low temperatures? The answer requires the investigation of molecular samples that are cold, dense, and slow at...
Scientists from the Max Planck Institute of Quantum Optics, using high precision laser spectroscopy of atomic hydrogen, confirm the surprisingly small value of the proton radius determined from muonic hydrogen.
It was one of the breakthroughs of the year 2010: Laser spectroscopy of muonic hydrogen resulted in a value for the proton charge radius that was significantly...
17.10.2017 | Event News
10.10.2017 | Event News
10.10.2017 | Event News
19.10.2017 | Life Sciences
19.10.2017 | Interdisciplinary Research
19.10.2017 | Earth Sciences