Skies light up for second night in a row
Washington: Auroras lit up skies across swathes of the planet for the second night in a row, after already dazzling Earthlings from the United States to Tasmania to the Bahamas the day before.
A powerful solar storm has triggered spectacular celestial shows usually confined to the far northern reaches of the planet, hence their “northern lights” nickname.
Late Saturday evening, pictures again started trickling onto social media as people in the United States reported sightings, though not as strong as Friday night’s.
The first of several coronal mass ejections – expulsions of plasma and magnetic fields from the Sun – came just after 4pm GMT on Friday (12am Saturday Malaysia time), according to the Us-based National Oceanic and Atmospheric Administration’s Space Weather Prediction Centre (SWPC).
It was later upgraded to an “extreme” geomagnetic storm – the first since storms in October 2003 that caused blackouts in Sweden and damaged power infrastructure in South Africa.
Friday’s storm was listed as hitting level five geomagnetic conditions – the highest on the scale.
Saturday saw G3 to G5 conditions, with G4 or higher conditions predicted yesterday and G3 conditions possible later today.
But no major disruptions to power or communications networks appear to have been reported this time around, despite initial worries from authorities.
There have only been “preliminary reports of power grid irregularities, degradation to high-frequency communications, GPS and possibly satellite navigation,” the SWPC said.
Elon Musk, whose Starlink Internet operator has some 5,000 satellites in low Earth orbit, said his satellites were “under a lot of pressure, but holding up so far.”
However China’s National Centre for Space Weather issued a “red alert” Saturday morning, warning the storm will impact communications and navigation in most areas of the country, state news agency Xinhua reported.
Auroras were visible in the northern half of the country, according to media reports.