AuroraWatch UK: northern lights alerts
The official channel of AuroraWatch UK, run by space physicists at Lancaster University: automatic alerts whenever the northern lights may be visible from Britain.
What it is
AuroraWatch UK is a service run by space physicists at Lancaster University. It takes readings from the SAMNET and AuroraWatchNet magnetometers and automatically works out when the aurora is likely to be visible from the UK. This Telegram channel is one of the official ways to get those alerts — it's linked from the menu on aurorawatch.lancs.ac.uk. It has around 9.5K subscribers.
Why we picked it
Most science channels retell the news. This one is a working instrument. The colour code is simple: green means nothing much is happening; yellow means the aurora may be visible by eye from Scotland and by camera from northern England and Northern Ireland; amber means it's likely visible by eye in the north and possibly across the UK; red means it's likely visible from anywhere in the country.
In late September the channel was posting several times a day — a run of yellow alerts, then an amber one on 25 September. Each alert comes with a plot of geomagnetic activity from the magnetometer, so you can watch a storm build or fade. The text gives the exact issue time in UTC and BST and reminds you that you still need clear, dark skies away from light pollution.
The honest caveat: it deals in probabilities. A red alert won't help if it's cloudy. But as a way to learn how space weather actually behaves, live data beats headlines every time.
Where to start
- Learn the four colours: green, yellow, amber, red.
- Turn notifications on if you live in the UK or are visiting in autumn or winter.
- Check the magnetometer plots to see whether activity is rising or dropping.
- On amber, get away from streetlights and look north.
- Outside the UK, use it as a live lesson in geomagnetic activity.
Who it's for
People living in or travelling to Britain, astrophotographers and skywatchers. Anyone curious about how activity on the Sun turns into light in our sky.
Quick answers
Who runs it? AuroraWatch UK, a service of space physicists at Lancaster University, according to the channel description and the official site.
Where do the alerts come from? From SAMNET and AuroraWatchNet magnetometer measurements; the system is automated.
Does a red alert guarantee I'll see the aurora? No — you still need clear, dark skies and no light pollution.
