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“D” region Prediction
With a broad range of user groups that range from the aviation community, to satellite programs, to general enthusiasts like pigeon racers and aurora watchers, SWPC’s web page offers each of these user groups a dashboard specific to the data sets and information that affects them.
The electric power grid, and consequently the power to your home and business, can be disrupted by space weather. One of the great discoveries of the 19th century was the realization that a time-varying magnetic field is able to produce an electrical current in a conducting wire. The basic idea is that the time rate of change of the magnetic flux (i.e. lines of magnetic force) passing through a current loop is proportional to the current that
Space Weather Impacts On Climate
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GEOMAGNETIC STORM WATCH (G2): Yesterday, an X1.6-class solar flare (movie) hurled a CME toward Earth. NASA and NOAA models agree that the bulk of the CME should pass north of our planet, with its southern flank glancing our magnetic field late on May 5th. Moderately strong G2-class geomagnetic storms are possible when the CME arrives. Aurora alerts: SMS Text
GROWTH OF A DANGEROUS SUNSPOT: When May began, sunspot AR3663 didn’t exist. Now it is 10 times wider than Earth and crackling with strong solar flares. This 4 day movie from NASA’s Solar Dynamics Observatory shows the sunspot’s development:
During the time shown above, AR3663 developed a mixed-polarity ‘beta-gamma-delta’ magnetic field. This means it is unstable and harbors energy for powerful X-class explosions. Indeed, it has already unleashed one such flare (X1.6 on May 3rd) and almost another (M9.1 on May 4th). More flares are in the offing this weekend. Solar flare alerts: SMS Text
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What is a polar vortex?
Recommended: Amy Butler writes a great Polar Vortex Blog for NOAA. Check it out!
THE POLAR VORTEX WOBBLED IN DECEMBER: Last month, sky watchers in Europe saw something rare and beautiful. A giant bank of polar stratospheric clouds (PSCs) escaped the Arctic Circle, and for more than a week they filled skies with rainbow color as far south as Italy. In the Italian comune of Sanfrè (latitude +45N), Pablo Javier Lucero was able to photograph the clouds at all hours of the day:
Van Allen Probe observationshttps://www.nasa.gov/feature/goddard/2019/ten-highlights-from-nasa-s-van-allen-probes-mission
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lacy network of halos and arcs:
So you think you know what a comet is
https://spaceweathergallery.com/aurora_gallery.html
Potentially Hazardous Asteroids (PHAs) are space rocks larger than approximately 100m that can come closer to Earth than 0.05 AU. None of the known PHAs is on a collision course with our planet, although astronomers are finding new ones all the time.
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