After an intense solar storm Tuesday night, we may be treated again Wednesday.

The sun has been busy the last year and a half! Last May 10–13, 2024, saw the strongest solar storm since 1989, when the KP index reached a whopping 9 and auroras were visible practically all over North America. Tuesday evening’s display was nearly as intense, with a peak KP index of 8.67.

The aurora oval was so intense that it was visible as far south as El Salvador — at least on cameras! That’s just 13 degrees latitude!

To get visibility that far and wide requires a super-energetic solar storm — and we got it. A G4 (out of 5) geomagnetic storm was reached Tuesday night. It’s probably the second biggest since 1989, behind last May’s (2024).

Here’s an example of what the aurora oval looks like with a KP inde

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