A subtropical storm is one where central convection (rapidly rising air that forms thunderstorms) is fairly near the center and it has a warming core in the mid-levels of the troposphere. Subtropical cyclones differ from tropical cyclones because they have broad wind patterns and their maximum sustained winds are located farther from the center of the system than tropical cyclones.
GOES-13 (The Geostationary Operational Environmental Satellite) visible image of Subtropical Depression 17 (top, center) at 1145 UTC (7:45 a.m. EDT) shows a tight circulation and a long \"tail\" of clouds and showers that extend to the southeast of the center, reaching the northern Leeward Islands and Puerto Rico. GOES is operated by NOAA, and the NASA GOES Project at NASA Goddard Space Flight Center, Greenbelt, Md., creates images and animations from the satellite data. Credit: NOAA/NASA GOES Project
In addition, they usually have colder temperatures in upper levels of the atmosphere than tropical cyclones (which have very warm cores). Finally, sea surface temperatures required for the formation of sub-tropical storms are about 5 degrees Fahrenheit cooler than needed for a tropical cyclone to develop (80 F).
TD17 is forecast by the National Hurricane Center to move into a more favorable environment to develop, and its core may warm up making it into a tropical depression or tropical storm, if it intensifies.
The Geostationary Operational Environmental Satellite called GOES-13 captured an infrared image of TD17 on October 6 at 1231 UTC (8:31 a.m. EDT). GOES satellites are managed by NOAA. NASA's GOES Project at NASA's Goddard Space Flight Center in Greenbelt, Md. creates images and animations from the satellite data and created today's image that shows TD17 has a tight circulation and a long "tail" of clouds and showers that extend to the southeast of the center, reaching the northern Leeward Islands and Puerto Rico.
At 5 a.m. EDT on Oct. 6, TD17's maximum sustained winds were 35 mph. It was located about 270 miles north-northwest of San Juan, Puerto Rico and 710 miles south of Bermuda near 22.2 North and 67.0 West. It was moving northwest at 8 mph with minimum central pressure of 1001 millibars. TD17's "tail" extends to the southeast from the center of the system, and may bring some heavy rainfall in the northern Leeward Islands and Puerto Rico over the next day as it moves northwest then turns northeast to head out to the open waters of the Atlantic.
Rob Gutro | EurekAlert!
New Study Will Help Find the Best Locations for Thermal Power Stations in Iceland
19.01.2017 | University of Gothenburg
Water - as the underlying driver of the Earth’s carbon cycle
17.01.2017 | Max-Planck-Institut für Biogeochemie
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...
Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales
Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...
Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.
As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...
19.01.2017 | Event News
10.01.2017 | Event News
09.01.2017 | Event News
20.01.2017 | Life Sciences
20.01.2017 | Physics and Astronomy
20.01.2017 | Materials Sciences