On Thursday night, November 6, many states, including Michigan, have a strong chance to witness the northern lights, weather permitting. The National Oceanic and Atmospheric Administration (NOAA) reports that the aurora could be visible across up to 20 states.
The northern lights will be visible starting late Thursday night, continuing into the early morning of Friday, November 7. NOAA's Weather Prediction Center notes that the spectacle may be visible again Friday night.
In Michigan, the aurora might be seen overhead as far south as Traverse City, Gaylord, and Alpena. The northern horizon view line could extend as far south as northern Ohio and Indiana.
NOAA forecasts a moderate geomagnetic storm, triggered by solar eruptions earlier this week that sent charged particles toward Earth’s magnetic field. This disturbance, classified as a G3 geomagnetic storm, is expected to produce a Kp index of 7.
"Kp is an index used to indicate the severity of the global magnetic disturbances in near-Earth space," NOAA explains. "Kp ratings increase from zero to nine." An index of 5 or higher generally means the northern lights may be visible across Michigan.
The upcoming geomagnetic storm offers an unusual opportunity for many to experience the aurora borealis farther south than usual.
"The lights could be seen a bit farther south than usual," according to NOAA, due to the solar activity earlier in the week.
Author's summary: A strong geomagnetic storm on November 6 may bring vibrant northern lights visible across 20 US states, including deeper into southern Michigan and neighboring regions.