The splash of a powerful solar wind on October 19 was just enough to disrupt the magnetic field of our planet, sparking bright lights around the Arctic Circle.
In Tromsø, Norway, the whole world became green: “There were radiance in the sky, the shines were on the water, the polar lights were everywhere! As an experienced northern lights guide, I have never seen such a strong start to the season, “says Norwegian photographer Marcus Varick. At night, this weekend, the radiance can become even stronger. Forecasts give a 21% probability of polar geomagnetic storms on October 21-22, when a new stream of solar wind arrives. Almost New Moon will provide a background of a velvety dark sky for auroras.