11 November 2025 Geomagnetic Storm

Between November 10 and 13 of this year we had another fine geomagnetic even caused by several CME that were hurled our way from a large sunspot group that was busy generating X class solar flares and associated CME outbursts. Aurora was seen across all of New Hampshire, through the entire continental USA and into Mexico. Emails came to us from friends in Arizona, showing aurora with saguaro cacti in the foreground: quite a sight! It was, fortunately, clear here that night after about 9pm until 2am, so we saw some fabulous aurora here. The magnetometer was also running and captured the event. Below you will find the images from both cell-phone and Nikon Z8 as well as the magnetometer traces. Note the times on these are in UTC for the days November 10, 11, 12, 13, 14. The Y-axis are in units of nT. Each day at 00h UTC, the variance is reset to 0nT by design.

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