Skywatchers around the world were treated to stunning auroras that surged far beyond their usual polar limits, lighting up mid-latitude skies during a severe G4 geomagnetic storm.
Northern lights were reported across mid-latitudes, with sightings stretching from Germany to the southwestern United States, including New Mexico, during a night of rapidly fluctuating geomagnetic conditions that fluctuated between G1, G2, G3 and G4 storm levels.
The display was triggered by the arrival of an exceptionally fast coronal mass ejection (CME) that struck Earth's magnetic field at around 2:38 p.m. EST (1938 GMT) on Jan. 19, when geomagnetic conditions first escalated to G4 (severe) storm levels, according to NOAA's Space Weather Prediction Center. The CME had blasted away from the sun just a day earlier, on Jan. 18, during a powerful X1.9 solar flare — giving it remarkably little time to cross the roughly 91 million miles (147 million kilometers) between the sun and Earth.
After the initial shock arrival, the passage of the CME itself kept Earth's magnetic field in a highly disturbed state for hours, producing repeated surges of auroral activity as storm levels rose and fell through the night, according to the U.K. Met Office.
We've gathered up some of the best photos from last night's aurora activity captured by skywatchers around the world.
Photographer Greg Gage sent us these stunning views of the northern lights captured from Deming, New Mexico, at 32° latitude!
Source: www.space.com
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