The October 25th Aurora Red Alert

On October 25th, the UK receivedĀ an astonishing early Christmas present. At 17:48 UTC (18:48 BST), AuroraWatch UK issued an extremely rare red alert, indicating that it may have been possible to see the aurora from the entirety of the UK. There were in fact two distinct periods where geomagnetic activity went above red alert thresholds:…

CME drives hidden aurora

Strong geomagnetic activity was recorded during the night of 13-14 October, resulting in an amber alert being sent out to our subscribers. High activity lasted for several hours and nearly reached our threshold for a red alert (falling just short of the required 200nT, maxing out at 190nT). The activity was the result of a…