Northern Lights potentially visible Thursday night in Tompkins County area
ITHACA, N.Y. — On Thursday night, Ithaca may be greeted by a rare geomagnetic spectacle, potentially showing residents the Northern Lights and bringing possible impacts to critical infrastructure technology.
A solar flare erupted from the sun Tuesday evening and arrived to Earth at 11:15 a.m. Thursday. The latest predictions anticipate the storm will go on until Friday, according to the NOAA’s Space Weather Prediction Center (SWPC). Those interested in viewing the Northern Lights will have the best chance overnight from Thursday to Friday, though it will depend on weather conditions at the time.
The flare that erupted Tuesday was rated as X-class, the strongest category of flare.
A Coronal Mass Ejection (CME) accompanied the solar flare, sending “solar material and embedded magnetic fields” hurtling through space and toward the Earth, said Shawn Dahl, the service coordinator for the SWPC.
The sun is nearing its peak level of activity during the 11-year solar cycle, a period generally marked by an increased number of sunspots during which the sun experiences more solar flares and more CMEs. Last May, the Earth was hit by a historic geomagnetic storm, causing auroras to be visible as far south as Florida, but Dahl does not think Thursday’s storm will get this strong.
Regardless, Thursday’s CME may prove strong enough to paint the night sky with the glow released by molecules of oxygen and nitrogen in our atmosphere. The molecules are excited by the energetic electrons brought here by the storm. When these molecules relax, they glow, Hysell said.
For the best opportunity of catching a glimpse of the light show, Ithaca residents may want to travel southwest to avoid the less stable air northeast of the city, said meteorologist and Ithaca Voice development reporter Brian Crandall.
For ideal conditions, residents will also want to avoid places with light pollution and too much foliage, he said.
The aurora may be visible as far south as Alabama and northern California, but with the advances in smartphone photo technology, people have been able to readily see the red aurora much farther south than previously.
Geomagnetic storms are measured on a scale from G1-G5. Since arriving this morning, the storm’s intensity has been observed at G4, but there’s a slight chance the strength will increase to G5, according to the SWPC.
At this level of intensity, the storm could not only pose problems to the power grid, but also for spacecraft operations, radio communications and GPS. Passengers and crew high altitude airplanes flying through polar latitudes may also be exposed to solar radiation. As of Thursday afternoon, there’s a 40% chance of a strong to extreme radio blackout, according to the SWPC.
To reach Earth, this CME traveled 93 million miles, crashing into the Earth at one and a half million miles per hour. Luckily for humans and all other living beings on Earth, the planet is very good at shielding life from the impact of solar storms, said professor David L. Hysell, who studies ionospheric plasma physics at Cornell University.
“At the same time, humanity has gotten much better with making its systems resilient to phenomena like what’s taking place today,” Hysell said.
However, if the storm is sufficiently intense, Hysell said there’s a possibility it could blow out transformers, though it is more likely that it will just trip breakers.
That being said, alerts have been raised in the wake of Hurricane Helene and Hurricane Milton because the geomagnetic storm has the potential to put increased stress on the region’s already precarious grid and communications system.
“We’ve already been engaged with FEMA. […] This time, with all the hurricane relief efforts going on and the inbound hurricane going into Florida and across the peninsula, we found it prudent to immediately contact them now,” Dahl said during SWPC’s Wednesday night presentation.
This Monday, a less severe G3 geomagnetic storm hit Earth. As far as SWPC knows, the storm had no significant impacts to communication when it came to hurricane response.
If residents choose to stay up until midnight and chase the lights out into the country, Hysell suggests avoiding self-driving cars because the storm may impact the vehicle’s positioning system.
The post Northern Lights potentially visible Thursday night in Tompkins County area appeared first on The Ithaca Voice.