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For Space Weather Enthusiasts

“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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A GLANCING-BLOW CME IS COMING (MAYBE): NOAA forecasters say that a CME might graze Earth’s magnetic field late on March 2nd. It was hurled into space yesterday when a magnetic filament attached to sunspot AR3592 erupted. The impact could spark minor G1-class geomagnetic storms. Aurora alerts: SMS Text

MARCH IS THE BEST MONTH OF THE YEAR FOR AURORAS: Did you know that March is the best month of the year for auroras? It’s true. A 75-year study by retired NASA solar physicist David Hathaway shows that March has more geomagnetically active days than any other month of the year. (October is a close second.)


WHAT MAKES THIS SUNSPOT SO DANGEROUS? Don’t be surprised if there’s another X-flare this weekend. Giant sunspot AR3590 is directly facing Earth, and it has an unstable magnetic field that harbors energy for the strongest explosions. This magnetic map from NASA’s Solar Dynamics Observatory shows what makes the sunspot so dangerous:


This is a circumzenithal arc. While rainbows are formed by raindrops falling to Earth, circumzenithal arcs are formed by ice crystals floating in high clouds. There have been plenty of ice crystals this week, thanks to an Arctic air mass sitting over the central USA


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

lacy network of halos and arcs:

Earth sails the solar system in a ship of its own making: the mhttps://www.nasa.gov/feature/goddard/2021/themis-researchers-find-standing-waves-at-edge-of-earth-magnetic-bubbleagnetosphere,

So you think you know what a comet is


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.