[QODLink]
Africa
Solar storm fizzles on arrival at Earth
Geomagnetic storm ends up weaker than predicted with minor communications problems experienced in polar regions.
Last Modified: 09 Mar 2012 01:31

A solar storm that shook the Earth's magnetic field has spared satellite and power systems as it delivered a glancing blow, although it could still intensify until early Friday, US space weather experts said.

The geomagnetic storm surging from the sun was initially expected to be strong enough to disrupt power grids, airplane traffic and space-based satellite navigation systems. But US government scientists on Thursday downgraded their prediction on the intensity of the storm - a big cloud of charged particles spawned by two solar flares.

"At this point, it has been oriented in such a way that the net effect on the earth's magnetic field has been minimized," said Joseph Kunches, a space weather specialist at the US National Oceanic and Atmospheric Administration (NOAA).

Kunches said there were still some communication disruptions in the polar regions of the Earth that led airlines to reroute flights on Wednesday to avoid problems. The storm was not likely to be strong enough to disrupt GPS systems, he added.


Mullard Space Science Laboratory’s Bob Bentley

Like hurricanes, solar storms have a rating system, with G1 being less severe and G5 being more intense. Scientists initially expected a G3 storm, but said it turned out to be a "minor" G1 disturbance.

"Now we're just watching for how this is all going to shake out," Kunches said, likening the storm to a passing freight train.

More solar disruptions are still a possibility.

The part of the sun that spawned the flares has been pretty quiet in the last 24 hours, but that could change, Kunches said.

"Forecasters are still suspicious that (the Sun) could produce some more eruptive activity," he said.

One thing the storm could still produce is some spectacular auroras, Kunches said. In the Northern Hemisphere, the aurora borealis could be visible at higher latitudes, such as the northern United States, although the March full moon may make them difficult to see.

Source:
Reuters
Topics in this article
People
Country
City
Organisation
Featured on Al Jazeera
At least 25 tax collectors have been killed since 2012 in Mogadishu, a city awash in weapons and abject poverty.
Tokyo government claims its homeless population has hit a record low, but analysts - and the homeless - beg to differ.
3D printers can cheaply construct homes and could soon be deployed to help victims of catastrophe rebuild their lives.
Lack of child protection laws means abandoned and orphaned kids rely heavily on the care of strangers.
Featured
Booming global trade in 50-million-year-old amber stones is lucrative, controversial, and extremely dangerous.
Legendary Native-American High Bird was trained in ancient warrior traditions, which he employed in World War II.
Hounded opposition figure says he's hoping for the best at sodomy appeal but prepared to return to prison.
Fears of rising Islamophobia and racial profiling after two soldiers killed in separate incidents.
Group's culture of summary justice is back in Northern Ireland's spotlight after new sexual assault accusations.