High-latitude sky watchers should be alert for auroras. During the early hours of July 22nd, a crack opened in Earth's magnetic field when BsubZ tipped south, setting the stage for minor geomagnetic storms. Usually, these storms are not dangerous and most commonly result in northern or southern lights. However, sometimes the stream of particles can be so huge that it can cause Earth’s atmosphere to expand, as they heat the outer layer of it. As the atmosphere expands, satellite signals make it much more difficult to reach the ground, potentially leading to a lack of GPS navigation, mobile phone signal and satellite TV such as Sky. Additionally, a surge of particles can lead to high currents in the magnetosphere, which can lead to higher than normal electricity in power lines, resulting in electrical transformers and power stations blow outs and a loss of power.