NASA and NOAA satellites were watching the low pressure System 98L in the central Atlantic yesterday when it was 1450 miles east of the Leeward Islands.
This image from NOAA's GOES-13 satellite was captured at 4:45 a.m. on Sept. 21, 2011, and shows Ophelia as a large and still disorganized area of clouds (right). Ophelia is about 350 miles in diameter. The smaller rounded area of clouds (left) is another low that has a zero percent chance of development. Credit: Credit: NASA/NOAA GOES Project
Yesterday, Sept. 20, 2011 at 4:11 p.m. NASA's Aqua satellite flew over System 98L before it became a tropical storm. An infrared image from the Atmospheric Infrared Sounder instrument onboard showed System 98L's strongest thunderstorms and coldest cloud tops (colder than -63F/-52C) were banded north and south of the center of circulation. Those bands of thunderstorms were a sign that the low pressure area was organizing and strengthening.While the U.S. was asleep, System 98L organized and strengthened further into Tropical Storm Ophelia. By the early morning of Sept. 21, her center was near 12.7 North latitude and 41.8 West longitude, about 1370 miles east of the Leeward Islands. Her minimum central pressure is 1005 millibars. Ophelia has maximum sustained winds near 45mph. Those tropical storm-force winds extend out to 175 miles making Ophelia a good-sized tropical storm, about 350 miles in diameter.
Ophelia is still too far away from land for watches or warnings. She's moving west at 14 mph (20 kmh) and the National Hurricane Center expects to Ophelia to continue in that direction while strengthening over the next day in the warm waters of the central tropical Atlantic.
Thereafter, however, the southwesterly wind shear is expected to shift more westerly and increase because of an upper-level low pressure area forming north of Puerto Rico. Increasing wind shear will likely prevent further intensification, but satellites are keeping an eye on what's happening under the hood of Ophelia's clouds.
According to the National Hurricane Center forecast track, interests in the Northern Leeward Islands and Puerto Rico will feel the effects of Ophelia late in the weekend.
Rob Gutro | EurekAlert!
Supercomputing helps researchers understand Earth's interior
23.05.2017 | University of Illinois College of Liberal Arts & Sciences
How is climate change affecting fauna in the Arctic?
22.05.2017 | Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung
An international team of physicists has monitored the scattering behaviour of electrons in a non-conducting material in real-time. Their insights could be beneficial for radiotherapy.
We can refer to electrons in non-conducting materials as ‘sluggish’. Typically, they remain fixed in a location, deep inside an atomic composite. It is hence...
Two-dimensional magnetic structures are regarded as a promising material for new types of data storage, since the magnetic properties of individual molecular building blocks can be investigated and modified. For the first time, researchers have now produced a wafer-thin ferrimagnet, in which molecules with different magnetic centers arrange themselves on a gold surface to form a checkerboard pattern. Scientists at the Swiss Nanoscience Institute at the University of Basel and the Paul Scherrer Institute published their findings in the journal Nature Communications.
Ferrimagnets are composed of two centers which are magnetized at different strengths and point in opposing directions. Two-dimensional, quasi-flat ferrimagnets...
An Australian-Chinese research team has created the world's thinnest hologram, paving the way towards the integration of 3D holography into everyday...
In the race to produce a quantum computer, a number of projects are seeking a way to create quantum bits -- or qubits -- that are stable, meaning they are not much affected by changes in their environment. This normally needs highly nonlinear non-dissipative elements capable of functioning at very low temperatures.
In pursuit of this goal, researchers at EPFL's Laboratory of Photonics and Quantum Measurements LPQM (STI/SB), have investigated a nonlinear graphene-based...
Dental plaque and the viscous brown slime in drainpipes are two familiar examples of bacterial biofilms. Removing such bacterial depositions from surfaces is...
23.05.2017 | Event News
22.05.2017 | Event News
17.05.2017 | Event News
23.05.2017 | Physics and Astronomy
23.05.2017 | Life Sciences
23.05.2017 | Medical Engineering