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<p>The National Security Risk Assessment includes the reasonable worst case scenario
assessing the impacts of severe space weather phenomena, such as solar flares, on
essential services. This was updated in 2022 and reflects the latest scientific and
engineering knowledge, including appropriate historical data from the Carrington Event.</p><p>Met
Office modelling suggests that the coronal mass ejection of 12 March 2023 erupted
from the far-side of the Sun travelling away from the Earth, at a similar speed to
the Carrington event of 1859.</p>
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