The northern lights dazzled a large swath of North America in the wee hours of Mon., Sept. 1, and another display is possible Tuesday night.
The National Oceanic and Atmospheric Administration (NOAA)'s Space Weather Prediction Center observed G2 (Moderate) geomagnetic storm levels on Monday, and expects subsequent G3 (Strong) storm conditions on Tuesday as the storm passes.
A geomagnetic storm is a slight disturbance in Earth's magnetic field that varies in intensity, ranging from minor to moderate, and then strong to severe storm conditions.
The stronger the intensity, the more likely it is that areas further south of the Arctic Circle will be able to see the aurora.
Colourful northern lights display is possible in Vancouver
The University of Alaska Fairbanks (UAF) forecasts "active" auroral movement on Tuesday night, with overhead displays possible from Yellowknife to Juneau, and Edmonton to Winnipeg. Locals may also be able to view them low on the horizon from Vancouver to Ottawa and east to St. John's. Some states south of the border may also observe them low of the horizon.
