The Global Precipitation Measurement, or GPM, mission core satellite, a joint mission between NASA and the Japan Aerospace Exploration Agency, measured heavy rainfall in severe storms early on Friday, April 1, in the southern U.S.
Over the last few days tornado spawning thunderstorms have occurred in the states of Texas, Oklahoma, Arkansas, Louisiana, Indiana, Mississippi, Alabama and Georgia. Large hail, damaging winds and flash flooding associated with a frontal system moving across the United States have compounded the damage from these storms. Hail the size of a half-dollar was reported near Jackson, Louisiana, on Thursday evening, March 31.
The GPM core observatory satellite flew over the southern U.S. on March 31, 2016, at 10:41 p.m. EDT (April 1, 2016, at 2:41 a.m. UTC) where a tornado was reported near Hartselle, Alabama, less than an hour before the satellite passed over. Rain was falling at more than 91 mm (3.6 inches) per hour east of Chattanooga, Tennessee. Storm tops in Alabama reached above 12 km (7.4 miles). This image represents observed rainfall rates per hour.
Credits: NASA/JAXA, Hal Pierce
The GPM core observatory satellite flew over this stormy area on March 31, 2016, at 10:41 p.m. EDT (April 1, 2016, 2:41 a.m. UTC). Tornadoes were reported in Mississippi, Alabama and Georgia during the evening. A tornado was reported near Hartselle, Alabama, less than an hour before the satellite passed over.
A rainfall analysis was derived from data collected by GPM's Microwave Imager (GMI) and Dual-Frequency Precipitation Radar (DPR) instruments. The GPM radar (DPR) measured rain falling at the extreme rate of more than 91 mm (3.6 inches) per hour in a powerful storm east of Chattanooga, Tennessee.
At NASA's Goddard Space Flight Center in Greenbelt, Maryland, data from the GPM satellite's radar (GPM Ku band) were used to reveal the three dimensional structure of precipitation in storms beneath the satellite. GPM's radar found that storm tops in Alabama were reaching heights above 12 km (7.4) miles. The locations of intense storms were also revealed by this 3-D slice which shows radar echoes greater than 25 dBZ (decibels Z).
The National Weather Service Weather Prediction Center in College Park, Maryland, issued their Short Range Forecast Discussion at 1:28 a.m. EDT on April 1. The discussion called for heavy rain and strong thunderstorms in the southeastern U.S. states over the course of the day.
The NWS discussion said: A cold front crossing the East Coast tonight is expected to bring numerous showers and storms from the Northeast to Florida. Some of these thunderstorms may be severe across portions of the southeastern U.S. through early Saturday, April 2. There is also the possibility of some flash flooding in this same general area where one to three inches of rainfall will be possible, with locally higher amounts. For more information on U.S. forecasts visit: http://www.
For more information about GPM, visit: http://www.
Rob Gutro | EurekAlert!
Predicting unpredictability: Information theory offers new way to read ice cores
07.12.2016 | Santa Fe Institute
Sea ice hit record lows in November
07.12.2016 | University of Colorado at Boulder
In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.
Even back in the 1990s, scientists were comparing materials processing with nanosecond, picosecond and femtosesecond pulses. The result was surprising:...
Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...
A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.
Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...
In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.
“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...
The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.
The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...
16.11.2016 | Event News
01.11.2016 | Event News
14.10.2016 | Event News
08.12.2016 | Life Sciences
08.12.2016 | Physics and Astronomy
08.12.2016 | Materials Sciences