K-Based Geomagnetic Forecasts refer to predicting geomagnetic activity by leveraging data collected from a global network of geomagnetic observatories. These forecasts integrate individual observatory measurements while incorporating the same physical principles used in the original calculation of indices like Kp or Hpo (Hp60 and Hp30). This approach ensures accurate, high-resolution predictions of planetary disturbances caused by solar activity, even in scenarios with limited solar wind data.