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Current Selected 1-Hour Geomagnetic K-Indices

                                    UTC
          College, Alaska (N64W147): 0      0      0      0      0      0      0
           Baker Lake, NWT (N64W96): *      *      *      *      *      *      *
       Churchill, Manitoba (N58W94): *      *      *      *      *      *      *
       Cambridge Bay, NWT (N69W105): *      *      *      *      *      *      *
        Yellow Knife, NWT (N62W114): *      *      *      *      *      *      *
Post de le Baleine, Quebec (N55W77): *      *      *      *      *      *      *
           Hartland, U.K. (N51W004): *      *      *      *      *      *      *

                                     * = No Data or Data Not Available.


The information above shows the latest geomagnetic activity information for seven predominantly high-latitude auroral magnetic observatories. Data from these stations are used to derive most of the propagation predictions in the table below.

Each K-index value shown above is a one-hour K-index value. That is, each value describes the level of geomagnetic activity that was observed during the indicated UTC hour. These figures are updated every hour that new data becomes available, although our system checks for new data once every 30 minutes. These K-indices are useful for describing the current state of the auroral oval, and hence can be used with fair reliability to determine whether specific high-latitude radio signal paths might be affected adversely by auroral activity.