The northern lights, or auroras, may soon make their exit after a series of impressive displays. A G2 (moderate) geomagnetic storm watch is currently in effect, indicating continued strong activity for those hoping to catch a glimpse. The latest forecast from the NOAA’s Space Weather Prediction Center (SWPC) suggests that conditions will remain favorable into the evening hours of October 2.
Recent Geomagnetic Activity
On October 1, a remarkable G3 (strong) geomagnetic storm illuminated the night sky in various locations, including parts of New York. On October 2, meteorologists predict a G2 peak between 9 a.m. and 12 p.m. GMT (5 a.m. to 8 a.m. EDT), with the potential for auroras to be visible after sunset.
Expected Visibility of Northern Lights
The following U.S. states are likely to have visibility of the northern lights tonight:
- Alaska
- Washington
- Idaho
- Montana
- North Dakota
- South Dakota
- Minnesota
- Wisconsin
- Michigan
- New York
- Maine
- Wyoming
If G2 or G3 levels are sustained, the auroras may reach further south, possibly over states like Vermont, parts of northern Pennsylvania, Iowa, and southern Oregon.
Future of Aurora Activity
However, this may be the final significant auroral display from this current solar event. Both NOAA and the U.K. Met Office foresee a gradual decline in geomagnetic conditions following October 2, as solar wind speeds drop.
How to Maximize Your Aurora Viewing
If you are located in one of the listed states, follow these tips:
- Travel to a dark spot away from city lights.
- Find a north-facing area with a clear horizon.
- Monitor the sky around midnight to 2 a.m. local time.
- Be patient, as auroras can appear in waves.
Utilizing a space weather app can enhance your chances of witnessing the auroras. Recommended apps include “My Aurora Forecast & Alerts” for real-time updates and notifications, as well as “Space Weather Live” for comprehensive insights.
What Drives Aurora Activity?
The ongoing auroral activity stems from fast solar winds generated by a coronal hole on the sun. These winds, travelling at speeds exceeding 800 km/s (1.8 million mph), have disturbed Earth’s magnetic field, causing enhanced auroras. The current intensity is heightened due to the equinox, a phenomenon known as the Russell-McPherson Effect, which increases the Earth’s magnetic sensitivity at this time of year.
As the auroral activity continues, observers are encouraged to stay vigilant and make the most of these last opportunities to behold this natural wonder.
