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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): NOAA forecasters say that G2-class geomagnetic storms are possible on May 11th when a halo CME (described below) is expected to hit Earth’s magnetic field. Storm conditions could escalate to category G3 (Strong) if, as we suspect, a second CME is following close behind. Stay tuned for updates. CME impact alerts: SMS Text
EARTH-DIRECTED CME: A CME is coming. It was hurled into space earlier today by a roiling series of explosions in the magnetic canopy of giant sunspot AR3664. This movie from the Solar and Heliospheric Observatory shows the CME leaving the sun bracketed by Venus (right) and Jupiter (left):
A NOAA forecast model predicts the CME will reach Earth late on May 10th, sparking G1– to G2-class geomagnetic storms on May 11th.
A second CME might be following close behind this one. You can see a hint of it emerging near the end of the movie, above. Stay tuned for updates as more data arrive from SOHO coronagraphs. CME impact 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.
https://spaceweather.com/images2023/06dec23/sigmoid_strip_opt.gif
