The northern lights might shine bright in the skies tonight, August 18-19. A strong stream of solar wind could cause geomagnetic storms, making auroras visible in about 15 U.S. states. The National Oceanic and Atmospheric Administration (NOAA) is keeping a close eye on this event.
Forecasters at NOAA’s Space Weather Prediction Center and the UK Met Office suggest there’s a chance for minor geomagnetic storm conditions tonight. These conditions could bring even more auroras in the days ahead.
What’s causing all this? A large coronal hole on the sun is sending solar wind toward Earth. Coronal holes allow solar wind to escape more freely, which can impact our planet’s magnetic field.
Tonight is expected to be special. NOAA anticipates the Kp index, a measure of geomagnetic activity, will reach Kp 5. This means conditions are ripe for viewing auroras, especially between 11 p.m. and 5 a.m. EDT. A recent study found that auroras are more frequently visible during solar maximum periods, which occur approximately every 11 years. We are currently in a solar cycle that started in 2020, meaning more auroras might be seen soon.
15 states have the best chance of seeing the lights tonight:
- Alaska
- Montana
- North Dakota
- Minnesota
- Wisconsin
- Michigan
- Maine
- South Dakota
- Vermont
- New Hampshire
- Idaho
- Washington
- New York
- Wyoming
- Iowa
Even if your state is on the list, clear skies and a good view to the north are essential for seeing the lights. So, choose a dark place away from city lights. Look up around midnight, and be patient. Auroras come in waves, appearing faint at first.
Social media platforms are buzzing with excitement about the northern lights. Many users share tips, hopes, and stunning past photos of auroras. This trend shows how much people enjoy witnessing this natural wonder. To stay updated, consider downloading an app for real-time alerts and forecasts.
For more information, check out NOAA’s [Kp index forecast](https://www.swpc.noaa.gov/products/3-day-forecast) or the UK Met Office’s [space weather forecasts](https://weather.metoffice.gov.uk/specialist-forecasts/space-weather). Knowing what to expect can help you plan your aurora-watching experience!
