When NASA's Tropical Rainfall Measuring Mission (TRMM) satellite flew over the developing TD18 early on Oct. 22 at 0040 UTC (Oct. 21 at 8:40 p.m. EDT), the satellite measured rainfall rates within the low pressure area and measured cloud heights of the thunderstorms that make up the low.
NASA's TRMM satellite flew over the developing tropical depression 18 on Oct. 21 at 8:40 p.m. EDT and noticed a hot towering thunderstorm over 9.3 miles (15 kilometers) high and an area of heavy rainfall (red).
Credit: NASA/SSAI, Hal Pierce
TRMM noticed that the developing depression had a "hot towering" thunderstorm over 9.3 miles (15 kilometers) high. That same area also revealed heavy rainfall where rain was falling at 2 inches/50 mm per hour.
Hot Towers are towering clouds that emit a tremendous amount of latent heat (that's why they're called "hot" towers). NASA research indicates that whenever a hot tower is spotted, a tropical cyclone will likely intensify within 6 or more hours, and the low pressure system intensified into a tropical depression.
Satellite data also showed that the depression also has a closed surface circulation and the banding of thunderstorms around the center has increased during the early morning hours on Oct. 22. These are all signs that the depression is getting more organized.
At 11 a.m. EDT, TD18 had maximum sustained winds near 30 mph (45 kph). It was located near 13.5 North latitude and 78.0 West longitude, about 320 miles (515 km) south-southwest of Kingston, Jamaica. TD18 was moving to the southwest at 5 mph 7 kph) and had a minimum central pressure of 1003 millibars.
The National Hurricane Center (NHC) noted that a tropical storm warning could be needed later in the day on Monday, Oct. 22 for Jamaica. Also, interests in eastern Cuba, Hispaniola, and the Bahamas should monitor the progress of this system. According to NHC, the depression is expected to drift westward and the turn to the north-northeast on Oct. 23 and 24. The forecast track takes TD18's center near Jamaica during the night-time hours on Oct. 23.
Tropical Depression 18 was born from the low pressure area formerly known as System 99L. The NHC expects TD18 to strengthen and become a tropical storm later on Oct. 22 or on Oct. 23. Once the depression becomes a tropical storm it would be renamed "Tropical Storm Sandy."
In addition to the new tropical depression, there's another area that forecasters are watching in the Atlantic. System 90L is producing showers and thunderstorms in the central Atlantic about 700 miles east-northeast of the Leeward Islands. During the morning hours of Oct. 22, the showers had become a little better organized, and the NHC gives the low a 50 percent chance of becoming the nineteenth tropical depression of the Atlantic hurricane season.Text credit: Rob Gutro
Rob Gutro | EurekAlert!
Stagnation in the South Pacific Explains Natural CO2 Fluctuations
23.02.2018 | Carl von Ossietzky-Universität Oldenburg
First evidence of surprising ocean warming around Galápagos corals
22.02.2018 | University of Arizona
A newly developed laser technology has enabled physicists in the Laboratory for Attosecond Physics (jointly run by LMU Munich and the Max Planck Institute of Quantum Optics) to generate attosecond bursts of high-energy photons of unprecedented intensity. This has made it possible to observe the interaction of multiple photons in a single such pulse with electrons in the inner orbital shell of an atom.
In order to observe the ultrafast electron motion in the inner shells of atoms with short light pulses, the pulses must not only be ultrashort, but very...
A group of researchers led by Andrea Cavalleri at the Max Planck Institute for Structure and Dynamics of Matter (MPSD) in Hamburg has demonstrated a new method enabling precise measurements of the interatomic forces that hold crystalline solids together. The paper Probing the Interatomic Potential of Solids by Strong-Field Nonlinear Phononics, published online in Nature, explains how a terahertz-frequency laser pulse can drive very large deformations of the crystal.
By measuring the highly unusual atomic trajectories under extreme electromagnetic transients, the MPSD group could reconstruct how rigid the atomic bonds are...
Quantum computers may one day solve algorithmic problems which even the biggest supercomputers today can’t manage. But how do you test a quantum computer to...
For the first time, a team of researchers at the Max-Planck Institute (MPI) for Polymer Research in Mainz, Germany, has succeeded in making an integrated circuit (IC) from just a monolayer of a semiconducting polymer via a bottom-up, self-assembly approach.
In the self-assembly process, the semiconducting polymer arranges itself into an ordered monolayer in a transistor. The transistors are binary switches used...
Breakthrough provides a new concept of the design of molecular motors, sensors and electricity generators at nanoscale
Researchers from the Institute of Organic Chemistry and Biochemistry of the CAS (IOCB Prague), Institute of Physics of the CAS (IP CAS) and Palacký University...
15.02.2018 | Event News
13.02.2018 | Event News
12.02.2018 | Event News
23.02.2018 | Physics and Astronomy
23.02.2018 | Health and Medicine
23.02.2018 | Physics and Astronomy