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The anticipated coronal mass ejection from the M2.4 solar flare has arrived at Earth. It arrived at DSCOVR at 05:15 UTC which is about 9 hours earlier than we expected, and more than 15 hours earlier than the NOAA SWPC expected.
|Predicted Kp max||4|
|M-class solar flare||15%|
|X-class solar flare||1%|
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|Last geomagnetic storm:||2017/09/18||Kp5 (G1)|
|Number of spotless days in 2017:||56|
|Last spotless day:||2017/08/01|