Residents of 10 northern U.S. states may see the aurora borealis starting Thursday night, July 30 [1].
These sightings are possible due to a predicted G1 geomagnetic storm. Such events can push the visibility of the northern lights further south than usual, offering rare viewing opportunities for populations in the northern tier of the country.
The National Oceanic and Atmospheric Administration (NOAA) forecasts a potential G1 geomagnetic storm on Thursday, July 30, through Friday, July 31 [1]. According to the agency, the aurora may be visible on the northern horizon of northern U.S. states [1].
Reports indicate that 10 states may be positioned to see the lights on Thursday night [1]. This follows a previous forecast from earlier this month suggesting that up to nine states might have seen activity on a Wednesday night [2].
NOAA said the current forecast involves mild auroral activity and minor geomagnetic storm impacts [2]. While these storms can cause fluctuations in power grids or satellite communications, a G1 storm is the lowest category of geomagnetic storm and typically has minimal impact on the general public.
To maximize the chance of a sighting, observers are encouraged to look toward the northern horizon in areas with low light pollution. The window for visibility remains open through Friday, July 31 [1].
“10 northern U.S. states may see the aurora borealis starting Thursday night”
The occurrence of a G1 geomagnetic storm indicates a minor disturbance in Earth's magnetosphere caused by solar wind. While these events are frequent, their ability to push the aurora borealis into the latitudes of the northern U.S. provides a measurable indicator of solar activity levels. Because the storm is classified as G1, it is unlikely to disrupt critical infrastructure, but it serves as a reminder of the ongoing interaction between solar cycles and planetary magnetic fields.
