New Englanders have a rare opportunity to witness the northern lights over the next two nights, as a strong G3 geomagnetic storm is expected to illuminate the skies. The K-index, a measure of geomagnetic storm strength, is predicted to range between 5 and 7, suggesting that the aurora could be visible directly above northern New England, with a faint glow potentially visible on the southern horizon.

Peak Viewing Times

The best time to catch this celestial display will be during total solar midnight, roughly between 10 p.m. and 3 a.m. A K-index of 6 or greater typically allows for visibility over Boston, while a K-index of 4 might require assistance from a camera phone to capture the lights on the northern horizon.

In rare instances, such as during extremely active storms, a K-index of 8 or more can make the northern lights visible as far south as Mexico and the Bahamas. This was last experienced in 2024, when vibrant colors danced across the New England sky.

Viewing Conditions

While the forecast is promising for aurora sightings, there are some factors that could affect visibility. The timing of the geomagnetic activity may be slightly off, and weather conditions such as wildfire smoke or pollen clouds could distort the colors. Fortunately, humidity levels are expected to be low, and the skies mostly clear, with temperatures ranging from the 50s to mid-60s in urban areas.

The moon, currently a waning gibbous and about 84% illuminated, may also impact the colors visible to the naked eye. Typically, the aurora appears as dull colors and milky clouds to the human eye, but taking a photo can reveal the true vibrancy of the display, as cameras are better at capturing the colors.

For those planning to venture out to see the northern lights, patience and a good camera are recommended to fully appreciate this natural spectacle. Good luck!

Original reporting: NBC10 Boston — read the source article.