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Early stages of the distrubance.
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Overnight, an unexpected geomagnetic disturbance brought activity up to G2 levels. The magentogram of the event is quite spectacular:
There were no unusual spots during this period, but there was a strong impact on my signal received by TF4X (within the auroral oval), and, in the opposite direction, EA8BFK, which saw a remarkably strong spike to +13dB at 00:28UT. Neither of these stations have appeared in recent times during quiet overnight conditions:
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TF4X reception of my 1W WSPR at 14MHz (vertical delta loop) 16-17/4/21.
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| EA8BFK reception of my 1W WSPR at 14MHz (vertical delta loop) 16-17/4/21. |
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