Rutland felt a minor earthquake measuring 3.2 magnitude this morning, the British Geological Survey has confirmed.
Data from BGS shows the impact centred at Oakham at 07:07 this morning, with a depth of 4 kilometres.
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Guillier conceded a "severe defeat" defeat to his supporters as the result came in.
The outage struck Hartfield-Jackson Atlanta International Airport at around 1pm local time, stopping all outgoing flights.
It will be a chilly day for many parts with the highest temperatures, about 10 Celsius (50F) in the far northwest.