An unusually strong solar storm headed toward Earth could produce northern lights in the U.S. this weekend and potentially disrupt power and communications. The National Oceanic and Atmospheric Administration issued a rare geomagnetic storm watch — the first in nearly 20 years. That was expected to become a warning Friday night, when the effects of the solar outburst were due to reach Earth.
Quick Read
- Upcoming Solar Storm: A strong solar storm, the first such intense event in nearly 20 years, is approaching Earth, with potential disruptions expected over the weekend.
- Geomagnetic Storm Watch Issued: NOAA has issued a rare geomagnetic storm watch, which is set to upgrade to a warning by Friday night.
- Potential Impacts: The storm could disrupt power and communications and might produce the Northern Lights in the U.S. as far south as Alabama and Northern California.
- Power and Spacecraft Precautions: Operators of power plants and spacecraft have been advised to take necessary precautions due to potential disruptions caused by the storm.
- Sunspot Activity: The storm originated from a sunspot 16 times the diameter of Earth, causing significant solar flares and plasma outbursts since Wednesday.
- Historical Context: The storm could be one of the most severe since the 1859 solar storm, which was the most intense on record, although current predictions do not anticipate it reaching the same level.
The Associated Press has the story:
Strong solar storm could disrupt communications, produce northern lights in US
Newslooks- CAPE CANAVERAL, Fla. (AP) —
An unusually strong solar storm headed toward Earth could produce northern lights in the U.S. this weekend and potentially disrupt power and communications.
The National Oceanic and Atmospheric Administration issued a rare geomagnetic storm watch — the first in nearly 20 years. That was expected to become a warning Friday night, when the effects of the solar outburst were due to reach Earth.
NOAA already has alerted operators of power plants and spacecraft in orbit to take precautions.
“As far as the worst situation expected here at Earth, that’s tough to say and I wouldn’t want to speculate on that,” said NOAA space weather forecaster Shawn Dahl. “However, severe level is pretty extraordinary, It’s a very rare event to happen.”
NOAA said the sun produced strong solar flares beginning Wednesday, resulting in five outbursts of plasma capable of disrupting satellites in orbit and power grids here on Earth. Each eruption — known as a coronal mass ejection — can contain billions of tons of plasma and magnetic field from the sun’s outer atmosphere, or corona.
The flares seem to be associated with a sunspot that’s 16 times the diameter of Earth, according to NOAA. An extreme geomagnetic storm in 2003 took out power in Sweden and damaged power transformers in South Africa.
The latest storm could produce northern lights as far south in the U.S. as Alabama and Northern California, according to NOAA.
The most intense solar storm in recorded history, in 1859, prompted auroras in central America and possibly even Hawaii. “That’s an extreme-level event,” Dahl said. “We are not anticipating that” but it could come close.
