The eleventh tropical depression quickly grew into Tropical Storm Irwin this morning, as strong convection surged around its center of circulation. That convection (rising air that creates the thunderstorms that power a tropical cyclone) was seen in infrared imagery taken early this morning, Oct. 6, from the Atmospheric Infrared Sounder (AIRS) instrument aboard NASA's Aqua satellite. The cold cloud tops from those strong thunderstorms were colder than -63 Fahrenheit (-52 Celsius) and represented the strength in the core of Irwin.
This infrared image from the AIRS instrument on NASA's Aqua satellite shows the birth of two tropical cyclones on Oct. 6. The larger and more powerful Tropical Storm Irwin (left) and the smaller, more compact Tropical Depression10E (right). The purple areas indicate the coldest, highest cloud tops and strongest thunderstorms.
Credit: NASA/JPL, Ed Olsen
At 11 a.m. today, Oct. 6, Tropical Storm Irwin's maximum sustained winds had grown to 40 mph, after forming as a depression just 5 hours before. Irwin was located about 855 miles (1,375 km) south-southwest of the southern tip of Baja California, Mexico near 12.4 North and 116.8 West. It was moving away from land to the west-northwest near 6 mph (9 kmh). The National Hurricane Center expects Irwin to turn to the north and then north-northeast tomorrow. Irwin is expected to strengthen slowly in the next 48 hours. Minimum central pressure was 1005 millibars.
Closer to land, NASA's Aqua satellite saw a smaller Tropical Depression 10E. Tropical Depression 10E (TD10E) appears pretty close to Tropical Storm Irwin on the AIRS infrared imagery. It is located to the east-southeast of Tropical Storm Irwin, and it appears to be a smaller, more compact, rounded area of strong convection. Specifically, TD10E is located near 10.3 North and 105.8 West, about 610 miles south of Manzanillo, Mexico. It has maximum sustained winds near 35 mph (55 kmh) and is moving to the west-northwest near 8 mph (13 kmh). The AIRS infrared data shows strong convection around the southwestern edge of the center of circulation, indicating that TD10E could also become a tropical storm shortly.
The National Hurricane Center noted that "The tropical cyclone is forecast to remain over warm waters and in a low (wind) shear environment during the next several days" and predicts it could become a hurricane in two or three days. By mid-day on Saturday, Oct. 8, the National Hurricane Center forecast projects TD10E to change course and "recurve ahead of a large trough (elongated area of low pressure) diving southeastward across the southwest United States and the Baja Peninsula."Text credit: Rob Gutro
Rob Gutro | EurekAlert!
Atmospheric scientists reveal the effect of sea-ice loss on Arctic warming
11.03.2019 | Institute of Atmospheric Physics, Chinese Academy of Sciences
11.03.2019 | University of Tokyo
The Potsdam Echelle Polarimetric and Spectroscopic Instrument (PEPSI) at the Large Binocular Telescope (LBT) in Arizona released its first image of the surface magnetic field of another star. In a paper in the European journal Astronomy & Astrophysics, the PEPSI team presents a Zeeman- Doppler-Image of the surface of the magnetically active star II Pegasi.
A special technique allows astronomers to resolve the surfaces of faraway stars. Those are otherwise only seen as point sources, even in the largest telescopes...
Researchers at Chalmers University of Technology and the University of Gothenburg, Sweden, have proposed a way to create a completely new source of radiation. Ultra-intense light pulses consist of the motion of a single wave and can be described as a tsunami of light. The strong wave can be used to study interactions between matter and light in a unique way. Their research is now published in the scientific journal Physical Review Letters.
"This source of radiation lets us look at reality through a new angle - it is like twisting a mirror and discovering something completely different," says...
New research group at the University of Jena combines theory and experiment to demonstrate for the first time certain physical processes in a quantum vacuum
For most people, a vacuum is an empty space. Quantum physics, on the other hand, assumes that even in this lowest-energy state, particles and antiparticles...
Physicists in the EPic Lab at University of Sussex make crucial development in global race to develop a portable atomic clock
Scientists in the Emergent Photonics Lab (EPic Lab) at the University of Sussex have made a breakthrough to a crucial element of an atomic clock - devices...
Every year earthquakes worldwide claim hundreds or even thousands of lives. Forewarning allows people to head for safety and a matter of seconds could spell...
11.03.2019 | Event News
01.03.2019 | Event News
28.02.2019 | Event News
19.03.2019 | Physics and Astronomy
19.03.2019 | Life Sciences
19.03.2019 | Physics and Astronomy