Mohammed Ghouse Shukure Kamal is Karnataka High Court judge

Washington, May 11: The most powerful solar storm in more than two decades struck Earth on Friday, triggering spectacular celestial light shows from Tasmania to Britain -- and threatening possible disruptions to satellites and power grids as it persists into the weekend.

The first of several coronal mass ejections (CMEs) -- expulsions of plasma and magnetic fields from the Sun -- came just after 1600 GMT, according to the National Oceanic and Atmospheric Administration (NOAA)'s Space Weather Prediction Center.

It was later upgraded to an "extreme" geomagnetic storm -- the first since the "Halloween Storms" of October 2003 caused blackouts in Sweden and damaged power infrastructure in South Africa. More CMEs are expected to pummel the planet in the coming days.

Social media lit up with people posting pictures of auroras from northern Europe and Australasia.

"We've just woken the kids to go watch the Northern Lights in the back garden! Clearly visible with the naked eye," Iain Mansfield in Hertford, England, told AFP.

That sense of wonder was shared in Australia's island state of Tasmania.

"Absolutely biblical skies in Tasmania at 4 am this morning. I'm leaving today and knew I could not pass up this opportunity," photographer Sean O' Riordan posted on social media platform X alongside a photo.

Authorities notified satellite operators, airlines, and the power grid to take precautionary steps for potential disruptions caused by changes to Earth's magnetic field.

Elon Musk, whose Starlink satellite internet operator has some 5,000 satellites in low Earth orbit, described the solar storm as the "biggest in a long time."

"Starlink satellites are under a lot of pressure, but holding up so far," Musk posted on his X platform.

Unlike solar flares, which travel at the speed of light and reach Earth in around eight minutes, CMEs travel at a more sedate pace, with officials putting the current average at 800 kilometers (500 miles) per second.

The CMEs emanated from a massive sunspot cluster that is 17 times wider than our planet. The Sun is approaching the peak of an 11-year cycle that brings heightened activity.

'Go outside tonight and look'

Mathew Owens, a professor of space physics at the University of Reading, told AFP that how far the effects would be felt over the planet's northern and southern latitudes would depend on the storm's final strength.

"Go outside tonight and look would be my advice because if you see the aurora, it's quite a spectacular thing," he said. People with eclipse glasses can also look for the sunspot cluster during the day.

In the United States, this could include places such as Northern California and Alabama, officials said.

NOAA's Brent Gordon encouraged the public to try to capture the night sky with phone cameras even if they couldn't see auroras with their naked eyes.

"Just go out your back door and take a picture with the newer cell phones and you'd be amazed at what you see in that picture versus what you see with your eyes."

Spacecraft and pigeons

Fluctuating magnetic fields associated with geomagnetic storms induce currents in long wires, including power lines, which can potentially lead to blackouts. Long pipelines can also become electrified, leading to engineering problems.

Spacecraft are also at risk from high doses of radiation, although the atmosphere prevents this from reaching Earth.

NASA has a dedicated team looking into astronaut safety and can ask astronauts on the International Space Station to move to places within the outpost that are better shielded.

Following one particularly strong flare peak, the US Space Weather Prediction Center said users of high-frequency radio signals "may experience temporary degradation or complete loss of signal on much of the sunlit side of Earth."

Even pigeons and other species that have internal biological compasses could also be affected. Pigeon handlers have noted a reduction in birds coming home during geomagnetic storms, according to NASA's Jet Propulsion Laboratory.

Officials said people should have the normal backup plans in place for power outages, such as having flashlights, batteries, and radios at hand.

The most powerful geomagnetic storm in recorded history, known as the Carrington Event after British astronomer Richard Carrington, occurred in September 1859.

Udupi: Udupi became the second city on the Karnataka coast after Mangaluru to launch water rationing, a senior official said on Tuesday.

Commissioner of the Udupi City Municipal Corporation Rayappa said that the rationing system will come into force from Wednesday and will continue till the water in the reservoir reaches comfortable levels.

The dam built across the Swarna river at a place called Baje, which is the only source of water for Udupi city, recorded 3.25 meters of water as against the top level of 6.30 meters.

The decision of water rationing will be reviewed periodically until the reservoir regains its fullest levels, the official said.

The Mangaluru City Corporation resorted to water rationing on Saturday following declining water levels in the reservoir built across the Nethravati river at Thumbe. 

Bagalkot, Apr 29: Prime Minister Narendra Modi on Monday accused the Congress of planning religion-based reservation in the country for the sake of vote bank politics but asserted that he will not let it happen.

He said this Congress proposal is to appease minorities as the SC/ST and OBC community is now with the BJP.

"In Karnataka, Congress has started a campaign to change the Constitution and to snatch away the rights of SC/ST and OBCs. Our Constitution does not accept religion-based reservation. But the Karnataka government has given part of OBC reservation to Muslims," Modi said.

Addressing a mega election rally in this district headquarters town, he said, "They (Congress) will not settle with this. They had earlier too in their manifesto said about coming out with a law to provide religion-based reservation. There is a similar signal in their manifesto this time."

"I want to make my Dalit, SC/ST and OBC brothers and sisters aware about Congress' intentions. These people on the basis of religion, to keep their vote bank safe, are planning to loot your right which was given by Babasaheb Ambedkar and the Constitution," he added.

Veteran BJP leader B S Yediyurappa, BJP candidates and MPs from Bagalkot (Bagalkot) and Vijayapura (Bijapur) - P C Gaddigoudar and Ramesh Jigajinagi, respectively - were among those present at the rally.

Noting that most of SC, ST and OBC MPs in the Parliament are from BJP, Modi said, "So they feel that as SC, ST and OBC are with BJP. To gain the trust of minorities, they want to loot from SC, ST and OBC and give it to minorities. Will you let this happen?"

"I want to guarantee today to my Dalit, Adivasi and OBC brothers and sisters. I will not let such intentions of Congress be successful. To protect your rights, your reservation, Modi will go to any extent. I'm assuring you this," he added.