NOAA reports that a coronal mass ejection erupting from the Sun is expected to hit Earth on Sunday. It's magnetic waves could affect critical infrastructure ranging from satellites to power grids. NASA model predictions show a very fast solar storm traveling near 1000 km/s that could hit Earth by midday Sunday, June 1. A slower storm ahead might cause a slight traffic delay, but G4-levels by June 2 are possible. This means the aurora may be visible deep into mid-latitudes.This is a G2 on a scale of G1 to G5.
