There are plenty of space weather monitoring options available via satellite, telescopes etc monitoring the sun for a coronal ejection. We have several hours to

There are plenty of space weather monitoring options available via satellite, telescopes etc monitoring the sun for a coronal ejection. We have several hours to prepare for them when they pass earth. 'The fastest Earth-directed CMEs can reach our planet in as little as 15-18 hours. Slower CMEs can take several days to arrive. They expand in size as they propagate away from the Sun and larger CMEs can reach a size comprising nearly a quarter of the space between Earth and the Sun by the time it reaches our planet'. https://www.swpc.noaa.gov/phenomena/coronal-mass-ejections https://www.swpc.noaa.gov/phenomena/coronal-mass-ejections