The tornado that struck Moore on the afternoon of Monday, May 20, was an F-4 tornado on the enhanced Fujita scale, according to the National Weather Service. F-4 tornadoes have sustained winds from 166 to 200 mph. This tornado was about twice as wide as the tornado that struck Moore on May 3, 1999. Moore is located 10 miles south of Oklahoma City.
On May 20, 2013, a supercell thunderstorm in central Oklahoma spawned a destructive tornado that passed just south of Oklahoma City. The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA's Aqua satellite acquired this image of the storm at 2:40 p.m. local time (19:40 UTC). The red line depicts the tornado's track. The twister touched down west of Newcastle at 2:56 p.m. and moved northeast toward Moore, where it caused dozens of deaths and widespread destruction. The tornado had dissipated by 3:36 p.m., after traveling approximately 20 miles (32 kilometers).
Credit: NASA/Jeff Schmaltz, LANCE/EOSDIS MODIS Rapid Response Team at NASA Goddard; caption by Adam Voiland
Before, during and after the tornado, satellites provided imagery and data to forecasters. The first tornado warning was issued around 2:40 p.m. CDT (local time). By 3:01 p.m. CDT a tornado emergency was issued for Moore, and 35 minutes later at 3:36 p.m. CDT, the tornado spun down and dissipated.
NASA's Aqua satellite captured a visible-light image that provided a detailed look at the supercell thunderstorm. NOAA's GOES-13 satellite provided continuously updated satellite imagery depicting the storm's movement. After the tornado, the NASA-NOAA Suomi National Polar-orbiting Partnership satellite's lightning observations showed that the thunderstorm complex was still active after nightfall.
NOAA's GOES-13 satellite provided forecasters with images of the storm system every 15 minutes. One GOES-13 satellite image was captured at 19:55 UTC (2:55 p.m. CDT) as the tornado began its deadly swath. The tornado was generated near the bottom of a line of clouds resembling an exclamation mark. The GOES-13 satellite imagery from the entire day was assembled into an animation by the NASA GOES Project at NASA's Goddard Space Flight Center in Greenbelt, Md.
Four minutes after the tornado dissipated (19:40 UTC / 3:40 p.m. EDT), the Moderate Resolution Imaging Spectroradiometer (MODIS) instrument aboard NASA’s Aqua satellite captured a visible image of the supercell thunderstorm that spawned the Moore tornado. That image was created by the NASA Goddard MODIS Rapid Response Team and Adam Voiland, NASA Earth Observatory.
Later as the storm system continued through the region, another satellite captured an image of the storm at night that showed it was still powerful. The Visible Infrared Imaging Radiometer Suite aboard Suomi NPP observed lightning in a nighttime image on May 21 at 07:27 UTC (3:27 a.m. EDT). Lightning appeared as rectangular shapes in the image. The VIIRS imagery showed the city lights in the Oklahoma City area, but there was reduced light output in Moore as a result of tornado damage.
The Suomi NPP satellite carries an instrument so sensitive to low light levels that it can detect lightning in the middle of the night. The Day/Night band on Suomi NPP produces nighttime visible imagery using illumination from natural (the moon, forest fires) and man-made sources (city lights). The data were captured by the direct broadcast antenna at University of Wisconsin.Rob Gutro
Rob Gutro | EurekAlert!
World’s oldest known oxygen oasis discovered
18.01.2018 | Eberhard Karls Universität Tübingen
A close-up look at an uncommon underwater eruption
11.01.2018 | Woods Hole Oceanographic Institution
On the way to an intelligent laboratory, physicists from Innsbruck and Vienna present an artificial agent that autonomously designs quantum experiments. In initial experiments, the system has independently (re)discovered experimental techniques that are nowadays standard in modern quantum optical laboratories. This shows how machines could play a more creative role in research in the future.
We carry smartphones in our pockets, the streets are dotted with semi-autonomous cars, but in the research laboratory experiments are still being designed by...
What enables electrons to be transferred swiftly, for example during photosynthesis? An interdisciplinary team of researchers has worked out the details of how...
For the first time, scientists have precisely measured the effective electrical charge of a single molecule in solution. This fundamental insight of an SNSF Professor could also pave the way for future medical diagnostics.
Electrical charge is one of the key properties that allows molecules to interact. Life itself depends on this phenomenon: many biological processes involve...
At the JEC World Composite Show in Paris in March 2018, the Fraunhofer Institute for Laser Technology ILT will be focusing on the latest trends and innovations in laser machining of composites. Among other things, researchers at the booth shared with the Aachen Center for Integrative Lightweight Production (AZL) will demonstrate how lasers can be used for joining, structuring, cutting and drilling composite materials.
No other industry has attracted as much public attention to composite materials as the automotive industry, which along with the aerospace industry is a driver...
Scientists at Tokyo Institute of Technology (Tokyo Tech) and Tohoku University have developed high-quality GFO epitaxial films and systematically investigated their ferroelectric and ferromagnetic properties. They also demonstrated the room-temperature magnetocapacitance effects of these GFO thin films.
Multiferroic materials show magnetically driven ferroelectricity. They are attracting increasing attention because of their fascinating properties such as...
08.01.2018 | Event News
11.12.2017 | Event News
08.12.2017 | Event News
22.01.2018 | Agricultural and Forestry Science
22.01.2018 | Physics and Astronomy
22.01.2018 | Power and Electrical Engineering