Space Weather
Why Space Weather Matters
Published April 26, 2026
Space weather can affect systems people rely on every day, including radio communication, GPS, satellites, aviation, and parts of the power grid.
Space weather is not one thing
Different event classes answer different operational questions.
Kp and storm conditions
Kp tracks geomagnetic activity near Earth and helps characterize storm state.
Flares and radio blackout risk
Solar flare risk and radio blackout risk are separate from the current Kp reading.
How to read the card
Use space weather as a technical awareness signal, not a reason for alarm by itself.