5 ms·
From NOAA (https://www.swpc.noaa.gov/phenomena/aurora https://www.swpc.noaa.gov/phenomena/aurora) When space weather activity increases and more frequent and l
by trail-system 6y ago
From NOAA (https://www.swpc.noaa.gov/phenomena/aurora https://www.swpc.noaa.gov/phenomena/aurora)
When space weather activity increases and more frequent and larger storms and substorms occur, the aurora extends equatorward. During large events, the aurora can be observed as far south as the US, Europe, and Asia. During very large events, the aurora can be observed even farther from the poles.
- simias 6y agoThat's a very weird and not very precise way to word this. Of course I would expect auroras to be regularly visible in the far northern parts of the USA and Europe: https://en.wikipedia.org/wiki/File:Aurora_Kp_Map_North_America.gif https://en.wikipedia.org/wiki/File:Aurora_Kp_Map_North_Ameri... https://en.wikipedia.org/wiki/File:Aurora_Kp_Map_Eurasia.gif https://en.wikipedia.org/wiki/File:Aurora_Kp_Map_Eurasia.gif Now if you start seeing Auroras in Lisbon or Miami please let me know!
- iso947 6y agoAuroras were seen in Baltimore and Perth (Australia) during the Carrington event in 1859, around Lisbon’s latitude (both north and south)
- contravariant 6y agoLisbon would be worrying but Miami would be catastrophic. Portugal might be more northern than you think. It's only just south of Toronto.
- zipwitch 6y agoObligatory xkcd: https://xkcd.com/2233/ https://xkcd.com/2233/