This weekend's extreme geomagnetic storm is over, but there might be a last gasp. NOAA forecasters are currently predicting a return to severe (G4) conditions on May 12th when one or more CMEs might hit Earth's magnetic field.
CMEs emitted by the departing sunspot are no longer flying toward Earth. At most only glancing blows are likely from eruptions on May 12th through 14th.
The danger could return on May 15th, however. On that date the sunspot will pass through a region of the sun magnetically connected to Earth via the Parker Spiral. Subatomic debris (protons and electrons) from explosions on May 15th and 16th could spiral back to Earth and rain down our planet. This is called a "radiation storm;" it can upset satellite electronics and cause polar radio blackouts.
CMEs emitted by the departing sunspot are no longer flying toward Earth. At most only glancing blows are likely from eruptions on May 12th through 14th.
The danger could return on May 15th, however. On that date the sunspot will pass through a region of the sun magnetically connected to Earth via the Parker Spiral. Subatomic debris (protons and electrons) from explosions on May 15th and 16th could spiral back to Earth and rain down our planet. This is called a "radiation storm;" it can upset satellite electronics and cause polar radio blackouts.
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