A solar storm shook the Earth's magnetic field early Friday, but scientists said they had no reports of any problems with electrical systems.
After reports Thursday of the storm fizzling out, a surge of activity prompted space weather forecasters to issue an alert about changes in the magnetic field.
Space weather forecaster Rob Steenburgh says there haven't been any reports of problems from electrical system problems.
He says the storm reached a moderate level late Thursday before going to a strong level early Friday. For most of Thursday, it was rated as minor.
Steenburgh also says that there was another solar flare late Thursday, similar to the one a few days ago that set off the current storm. But he says it's too early to determine what kind of impact it will have or when it will arrive on Earth.
Scientists say such storms don't pose a threat to people, just technology.
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