Strong solar storm could disrupt communications and produce northern lights in US
May 10, 2024, 10:21 AM | Updated: 12:54 pm
This image provided by NASA shows a solar flare, as seen in the bright flash in the lower right, captured by NASA’s Solar Dynamics Observatory on May 9, 2024. A severe geomagnetic storm watch has been issued for Earth starting Friday and lasting all weekend _ the first in nearly 20 years. (NASA/SDO via AP)
(NASA/SDO via AP)
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’s Space Weather Prediction Center director Clinton Wallace says: "This is an unusual and potentially historic event". The solar storm that is set to hit tonight could be the strongest we've seen in 19 years.
Best viewing in extreme northern Utah: FRI 11 PM – SAT 3AM pic.twitter.com/quPYli1z1B
— Matthew Johnson (@KSL_Matt) May 10, 2024
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.”
The Space Weather Prediction Center has issued the first G4 (Severe) geomagnetic watch since 2005. The aurora tonight/tomorrow morning may become visible over much of the northern half of the country, and maybe as far south as Alabama to northern California.
Story:… pic.twitter.com/wbeRbnqD6E— National Weather Service (@NWS) May 10, 2024
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. Northern Utah close to the Idaho border has the best chance to see the lights — and avoid cloud cover.
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.
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