NASA's Moderate Resolution Imaging Spectroradiometer (MODIS) instrument on the Terra satellite captured a visible image of Tropical Storm Julia on Sept. 18 at 13:50 UTC (9:50 a.m. EDT) and noticed a large area of Saharan dust over the Atlantic Ocean, to Julia's east.
On Sept. 20 at 5 a.m. EDT, Julia was still holding on to tropical storm status with maximum sustained winds near 45 mph. Julia was located about 1,165 miles west of the Azores Islands near 35.5 North and 47.9 West. Julia is moving east-northeast near 9 mph and is forecast to speed up. Julia's estimated minimum central pressure is 998 millibars.
In addition to dealing with Saharan dust, Julia is dealing with wind shear created by massive Hurricane Igor far to her west. That westerly wind shear continues to push Julia's strongest convection (rapidly rising air that forms the thunderstorms that power her) to the east of Julia's center of circulation. When a tropical cyclone doesn't "stack up" line an upright column, it loses its uniform spin, and tends to weaken.
The National Hurricane Center expects Julia to fade into a remnant low in a day or two. Computer models show two different scenarios after that, as some see Julia could be absorbed in the massive circulation of Hurricane Igor, while others keep Julia separate and becoming extratropical before dissipating over cooler waters.
Meanwhile, as the curtain begins to drop on Julia in the eastern Atlantic, another low pressure system is in the wings to create its own show. There's a low about 400 miles west of the Cape Verde Islands that is showing signs of organization today. It's moving northwestward and has an 80% chance of becoming a tropical depression in the next 48 hours. That low is one that NAA satellites are keeping a close eye on.
Rob Gutro | EurekAlert!
Arctic melt ponds form when meltwater clogs ice pores
24.01.2017 | University of Utah
New Study Will Help Find the Best Locations for Thermal Power Stations in Iceland
19.01.2017 | University of Gothenburg
A Swedish-German team of researchers has cleared up a key process for the artificial production of silk. With the help of the intense X-rays from DESY's...
For the first time ever, a cloud of ultra-cold atoms has been successfully created in space on board of a sounding rocket. The MAIUS mission demonstrates that quantum optical sensors can be operated even in harsh environments like space – a prerequi-site for finding answers to the most challenging questions of fundamental physics and an important innovation driver for everyday applications.
According to Albert Einstein's Equivalence Principle, all bodies are accelerated at the same rate by the Earth's gravity, regardless of their properties. This...
An important step towards a completely new experimental access to quantum physics has been made at University of Konstanz. The team of scientists headed by...
Yersiniae cause severe intestinal infections. Studies using Yersinia pseudotuberculosis as a model organism aim to elucidate the infection mechanisms of these...
Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.
While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...
19.01.2017 | Event News
10.01.2017 | Event News
09.01.2017 | Event News
24.01.2017 | Physics and Astronomy
24.01.2017 | Life Sciences
24.01.2017 | Health and Medicine