At 1pm last night the UK suffered its biggest earthquake for nearly 25 years. I felt the tremors in London, which you can see from the map is well over 100 miles away.
The inner circle on the map shows a ten mile radius from the epicentre of the earthquake and the outer circle shows a 100 mile radius.
The epicentre of the 5.3 magnitude quake was near Market Rasen in Lincolnshire. Nobody was seriously hurt by the earthquake.
The Mapperz blog has quickly produced a better map than mine in Google Maps which shows the seismic magnitude throughout the UK.
The earthquake is also plotted on this excellent earthquake map.