SpaceWeather News:
"A coronal mass ejection swept past Earth during the early hours of Nov. 20th and sparked bright auroras over northern parts of the United States. At the time of this writing (1600 UT or 11:00 a.m. EST) a strong geomagnetic storm is in progress. The interplanetary magnetic field near Earth has tilted sharply south--a condition which promotes geomagnetic activity. If this condition persists, auroras are possible at low latitudes tonight
The source of this space weather is sunspot 484--one of the trio of big sunspots that caused intense solar storms last month. Indeed all three of those active regions are back on the Earth-facing side of the sun, so more solar activity is possible in the days ahead".
SpaceWeather.Com:
"A coronal mass ejection (CME) swept past Earth on Nov. 20th and sparked bright auroras as far south as Florida in the United States and Greece in Europe. The source of the CME was sunspot 484--one of the trio of active regions that caused intense geomagnetic storms last month".
2003. In the period of 15 to 23 november I stayed with Jaap van 't Leven and Peter Bus in Moncarapacho, Portugal in order to observe the meteorstream the Leonids, the comets 2P Encke and Linear. On the evening of november 20th we observed Northern Lights, which is very (very!) rare from these lattitudes (7 degrees west, 37 degrees north)! With many thanks to Klaas Jobse, Carl Johannink, Casper ter Kuile and Sietse Dijkstra.