18.03.2025 US
1119 day since the barbaric invasion of Ukraine

Magnetic Storms

Forecast of magnetic storms for today and the coming days. Data from the K-index, which measures the level of geomagnetic activity on a nine-point scale.

Oleksandr Budariev

The K-index is a quantitative measure of geomagnetic activity, used to describe magnetic storms and their intensity. It shows changes in the Earth's magnetic field over a three-hour interval, expressed on a nine-point scale from 0 to 9.

Here are the key points related to the K-index:

K-index scale:

  • Values from 0 to 3 indicate calm geomagnetic activity.
  • Values from 4 to 5 signal a weak or moderate geomagnetic storm.
  • Values from 6 to 7 indicate a strong magnetic storm.
  • Values 8 and 9 signify very strong and extreme magnetic storms.

How it affects:

Magnetic storms measured by the K-index can affect satellite communications, navigation systems, radio signals, and power systems on Earth.

People who are especially sensitive to changes in the magnetic field may experience discomfort during storms.

How it is calculated:

The K-index is measured based on data on magnetic field variations from observatories worldwide. The average K-index value over a three-hour period helps determine the level of geomagnetic activity.

This index is important for space weather forecasts and helps predict the impact of magnetic storms on various technological systems and human health.


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