More magnetic fun!

A sharp disturbance to Kp=6 (G2 levels) occurred inthe early evening yesterday (25/10/2020).

Short, sharp shock in the field.

 

At 14MHz, the effects were manifest as the Z component went northwards as an initial moderate enhancement of my outgoing WSPR signals to the east.  As the Z component went southerly, the signals underwent a rapid collapse, vanishing altogether for most receivers in the period.  For some, my signal went quiet for 2 hours, others for 4 hours.  The last stage was the reappearance of my signals as the field relaxed to quieter conditions.

When I got up in the middle of the night, the 20m band was open to several stations to the NE when, under quiet conditions, the band would now be dead.  Only one anomalous spot was heard, at 00:30UT (-21dB) and 00:44UT (-23dB), from TA4AEI at 3265km, coincinding with the now relaxed field just starting to show another, but much smaller, broader southerly deviation.

I analysed a number of receivers, and found the clearest example of the night's progression to be the spots of my signal provided by SM7KHA.  Longer horizontal lines indicate periods of non-reception; these stepped plots are often the best, but not perfect, way to show the data:

SM7KHA receiving my 1W WSPR, 2020 October 25-26

More dramatic, though, were the spots received by OE9HLH (note: scale extends later than for SM7KHA):