Current Space Weather Forecast

The K-index, and by extension the Planetary K-index, are used to characterize the magnitude of geomagnetic storms. Kp is an excellent indicator of disturbances in the Earth's magnetic field and is used by Space Weather Prediction Centre (NOAA) to decide whether geomagnetic alerts and warnings need to be issued for users who are affected by these disturbances.

Planetary K-index 3-day Plot

Forecast Websites for Satellite and Space Weather


  John Deere Satellite Predictor


  Sun Spot Watch (Forecast)


  Space Weather Canada (Forecast)


  NOAA Space Weather (Forecast)

NASA Space Weather App

The Space Weather App, which was developed jointly by Goddard's engineering and science directorates, with support from NASA's Heliophysics Division and the National Science Foundation, is capable of giving users real-time access to solar-event images, model simulations, data, and forecasts as they evolve and affect the near-Earth space environment.