What is a geomagnetic storm?
A geomagnetic storm is a disturbance of Earth's magnetosphere caused by solar activity, such as coronal mass ejections.
Science / Space Weather
A strong (G3) geomagnetic storm watch has been issued for December 9, 2025, raising the potential for viewing the Northern Lights (aurora borealis) in areas as far south as Ohio. This is due to a full-halo coronal mass ejection (CME) associ...
On December 6, 2025, at 20:39 UTC, an M8.1 flare from Region 4299 caused a full-halo coronal mass ejection (CME). This CME is predicted to reach Earth early to midday on December 9, 2025. When the energy from the CME interacts with Earth's magnetic field, it causes geomagnetic disturbances that can lead to the aurora borealis, also known as the Northern Lights. A G3 geomagnetic storm is classified as strong and can cause impacts such as: Power grid fluctuations can occur, satellite orientation irregularities, impacts to HF radio propagation, and auroral displays may be seen at lower latitudes.
**How to Prepare:**
1. **Find a Dark Location:** Get away from city lights to minimize light pollution. 2. **Check the Northern Sky:** Look towards the northern horizon. 3. **Allow Time for Adjustment:** Give your eyes about 15-20 minutes to adjust to the darkness. 4. **Use a Camera:** Capture the lights with a long-exposure photo using a DSLR camera or smartphone in night mode.
**Who This Affects Most:**
A geomagnetic storm is a disturbance of Earth's magnetosphere caused by solar activity, such as coronal mass ejections.
A CME is an eruption of plasma and magnetic field from the Sun's corona.
A G3 storm is classified as strong and can cause auroras to be seen at lower latitudes, along with potential impacts on technology.
Find a dark location away from city lights, look to the northern sky, and allow your eyes time to adjust to the darkness.
Do you think you will be able to see the Northern Lights? Share your photos with us if you do!
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