|Space Observing System|
The build-up to this (above) was certainly palpable. During the "quiet" stage, we had days of chaotic geomagnetic storms and disturbances from the 1st if March:
And then there's this.....
I don't know if these dips were due to instrument glitches or the readings actually registered accurately. If it's the latter, I have no idea what caused the dips. The first time I noticed it was on the 5th:
This went on for the next few days, around the same time everyday.
The reading at Space Weather Prediction Centre shows the same dip: