Solar storms are set to create vibrant northern lights across a significant portion of Canada and northern U.S. states for a second consecutive night. The U.S. National Oceanic and Atmospheric Administration (NOAA) forecasts that the spectacle will be observable across various regions, including B.C., Alberta, Saskatchewan, Manitoba, Yukon, Northwest Territories, Nunavut, Labrador, and the northern parts of Ontario and Quebec. Shawn Dahl, a service coordinator at the Space Weather Prediction Center in Colorado, anticipates the dazzling display to continue throughout the night, with peak intensity expected between 7 and 10 p.m. ET. He advises individuals planning to witness the event to stay updated with local forecasts.
Recent powerful solar flares on the sun were succeeded by coronal mass ejections (CME), which are fast-moving particle explosions traveling through the solar wind. Two Earth-directed CMEs reached Earth on Tuesday night, resulting in the aurora borealis being visible as far south as New Mexico and Texas. The Space Weather Prediction Center (SPWC) projects that the geomagnetic storm could persist into Wednesday night and potentially into Thursday, albeit with reduced intensity.
Canadian astronomer Debra Ceravolo was surprised to observe the northern lights in Texas on Tuesday night. The phenomenon occurs when large clouds of protons and electrons emitted from the sun become trapped in the Earth’s magnetic field and collide with the atmosphere. These clouds, generated by solar flares, release their energy upon reaching the atmosphere, producing the shimmering, colorful light display we witness. To experience the vivid colors best, individuals are advised to seek locations with clear views of the sky, away from major cities to minimize light pollution. The sun is currently at the peak of its 11-year activity cycle, making such light displays more frequent and widespread.
Auroras are typically visible near the poles, where solar particles interact with the Earth’s atmosphere. The ongoing magnetic changes in the sun, occurring every 11 years when its poles reverse, are causing the lights to be visible in deeper regions of Canada, the United States, and Europe. The heightened solar activity is expected to continue through the year, though the peak period is uncertain until months later, as per NASA and NOAA.
Apart from their visual spectacle, solar storms can impact Earth in various ways. When high-speed particles and plasma collide with the Earth’s magnetic field, temporary disruptions to the power grid can occur. Space weather disturbances can also interfere with air traffic control radio signals and satellite operations in orbit, potentially affecting radio and GPS communications. Historical incidents, such as the 1859 solar storm triggering auroras in Hawaii and setting telegraph lines ablaze, highlight the potential risks. Space weather experts emphasize the importance of readiness and preparation in the face of solar outbursts, as predicting such events months in advance remains challenging.
To catch the auroras, individuals can access forecasts on the NOAA’s Space Weather Prediction Center website or aurora forecasting apps. Optimal viewing locations include quiet, dark areas away from city lights, with national or local parks often recommended. Monitoring weather forecasts is crucial to avoid cloud cover hindering the spectacle. Additionally, capturing photos with smartphone cameras can reveal auroral hints that may not be visible to the naked eye.