Aurora Season Arrives.

As the CME streams past the Earth the field lines are swept back behind the planet, where they reconnect with each other and slingshot plasma towards Earth's night-side to create the nighttime aurora. Thanks to magnetometer and satellite data readily available on the internet, you can monitor the state of Earth's magnetic field and be ready to jump into action to chase down an aurora at a moment's notice. Linkage begins when solar plasma connects with magnetic field lines on the Sun-facing side of Earth to spark the dayside aurora. [Extracted from the article]