The aurora borealis (or northern lights) is a spectacular natural phenomenon which can occasionally be seen in the night sky over Britain. Once seen, it is never forgotten. Aurora Watch UK allows you to monitor geomagnetic activity and will let you know when aurora MAY be visible from the UK. Get alerts about increases in geomagnetic activity - triggered when the AuroraWatch status level changes; this indicates the relative likelihood of viewing an aurora in the UK. See the current alert status