What is a G2-class geomagnetic storm?

Question:

What is a G2-class geomagnetic storm?

Geomagnetic Storm:

A geomagnetic storm is a disturbance in the earth's magnetic field, often occurring when a coronal mass ejection (CME) or a high-speed solar wind sweeps past the earth. It is very difficult to predict when a geomagnetic storm will occur, though predicting these CME's and solar wind streams has a little bit more skill. Geomagnetic storms are responsible for some of the stunning auroras at high latitudes, but are also responsible for damage to satellites, radio communications, and the power grid.

There are different categories of geomagnetic storms based on the Kp-index, which quantifies the disturbance in the horizontal component of the earth's geomagnetic field with an integer in the range 0-9. Higher numbers indicate a greater disturbance, and geomagnetic storms are associated with a number above 4.

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Geomagnetic storms are rated from G1 to G5. Therefore, a G2-class geomagnetic storm is considered to be a "Moderate" storm. These occur...

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Solar Flares, Solar Prominences & Coronal Mass Ejections

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Chapter 27 / Lesson 6
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This lesson will go over three events caused by magnetic interactions in our Sun. They are prominences, flares, and coronal mass ejections. We'll also touch base on how the latter two can affect life on Earth.


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