The Estimated 3-hour Planetary Kp-index plot shows . The estimated Kp index is derived at the U.S. Air Force Space Forecast Center using data from ground-based magnetometers: Meanook, Canada; Sitka, Alaska; Glenlea, Canada; Saint Johns, Canada; Ottawa, Canada; Newport, Washington; Fredericksburg, Virginia; Boulder, Colorado; and Fresno, California. These data are made available through the cooperation of the Geological Survey of Canada (GSC) and the US Geological Survey.
Other SWPC Real-time Monitors
Kp-indices of 5 or greater indicate storm-level geomagnetic activity. Geomagnetic storms have been associated with satellite surface charging and increased atmospheric drag.
For more information see The K-index or SWPC Education page.
This page updates dynamically every 5 minutes.
NOAA / Space Weather Prediction Center
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