A massive solar flare erupted from the sun over the weekend, bringing with it the potential for a spectacular display of the Northern Lights. When these powerful flares are directed towards Earth, they can cause a coronal mass ejection (CME) that interacts with our planet’s magnetic field and upper atmosphere.
This interaction causes certain molecules to glow, creating the colorful lights we see as the Northern Lights. However, this specific storm is expected to give Earth only a glancing blow, with a forecasted Kp index of 6.67.
While this means the aurora may not extend overhead, it could still be visible in the northern sky if you head out once it gets dark and try to get away from city lights. If you’re lucky, you might catch an undulating glow reaching up from the northern horizon.
It’s worth noting that Northeast Wisconsin residents last saw a good display of the Northern Lights on August 12, so this could be a great opportunity to experience the phenomenon again.
Source: https://fox11online.com/weather/weather-stories/northern-lights-may-appear-for-northeast-wisconsin-monday-evening