Massive 'Cannibal' Solar Storm Threatens Earth's Magnetic Field

A "cannibal" coronal mass ejection (CME) from the sun is expected to hit Earth on July 18, potentially causing G1 or G2 geomagnetic storms. A cannibal CME occurs when a smaller CME is overtaken and combined with a larger, faster-moving CME. These storms can disrupt Earth's magnetic field, leading to auroras over higher latitudes and minor power grid fluctuations. Geomagnetic storms are classified by strength, with G1 being minor and G2 being moderate. Stronger storms can cause the northern lights to be visible in states further south. Cannibal CMEs are rare but become more likely during the solar maximum, which is forecasted to occur in 2025.