Never Miss the
Northern Lights 🌌
We watch NOAA's Kp index 24/7. The moment geomagnetic activity spikes to Kp 5+, you get an email — so you can step outside, look north, and catch the show.
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Join thousands of aurora chasers getting real-time alerts
Current Aurora Conditions
How It Works
Simple, automatic, and based on real science.
We monitor NOAA
Our system polls NOAA's Space Weather Prediction Center every 15 minutes, tracking the real-time planetary Kp index around the clock.
Kp hits 5+
When geomagnetic activity reaches Kp 5 (minor geomagnetic storm), the aurora oval expands significantly — visible from all major aurora destinations.
You get an email
We send you an alert with the current Kp level, expected visibility by region, and cloud cover tips so you can maximise your chances.
What You Get
Subscribing gives you everything you need to plan around aurora activity — without obsessively refreshing space weather websites.
- 🌌Real-time Aurora AlertsEmail the moment Kp hits 5+ — day or night.
- 📅Monthly ForecastsA curated look at upcoming solar activity, Coronal Mass Ejections, and the best viewing windows for the next 4 weeks.
- 📍Destination TipsPaired with each alert: which locations will see the best display, and how to find dark skies.
- 🔭Solar Cycle UpdatesWe're in Solar Cycle 25 peak (2024–2026) — the most active period in 20 years. We'll keep you posted on what that means for aurora chasers.
Get Aurora Alerts
Free · No spam · Kp 5+ threshold
The Kp Index Explained
The planetary K-index (Kp) runs from 0 to 9 and is the standard measure of geomagnetic storm intensity. We alert you at Kp 5 — the threshold where the aurora becomes reliably visible across all major viewing destinations.
No auroral activity. Clear polar skies with no visible aurora at any latitude.
Aurora faint and only visible near the magnetic poles (above 72°N).
Faint auroras near the polar regions. Rarely visible in Norway or Iceland.
Weak aurora activity. Possible in northern Norway, Iceland, and Canada on dark, clear nights.
Good auroral activity. Visible from most aurora destinations — time to go outside!
G1 geomagnetic storm. Strong auroras visible as far south as southern Norway & Scotland.
G2 storm. Vivid auroras visible across Northern Europe, Canada, and northern USA.
G3 storm. Aurora may extend to central Europe, the UK, and the northern US.
G4 storm. Dramatic aurora visible from the mid-latitudes — Germany, France, northern US cities.
G5 storm — the strongest possible. Widespread aurora visible even from tropical latitudes. Extremely rare.
Source: NOAA Space Weather Prediction Center · Updated every 3 hours
Frequently Asked Questions
How often will I get emails?
We only send alerts when it actually matters. Expect 1–4 aurora alert emails per month during active geomagnetic periods, plus one monthly forecast digest covering the upcoming 4 weeks. We never spam — if there's nothing worth reporting, we stay quiet.
What is the Kp index?
The Kp (planetary K) index is a 0–9 scale that measures global geomagnetic activity, published every 3 hours by NOAA's Space Weather Prediction Center. It's derived from 13 ground-based magnetometers around the world. Higher Kp = more aurora, visible at lower latitudes. A Kp of 5 or above is classified as a geomagnetic storm and triggers our alerts.
Where can I see aurora with Kp 5?
At Kp 5 (minor geomagnetic storm), the aurora oval expands significantly. You can expect visible auroras in northern Norway (Tromsø, Alta), all of Iceland, northern Finland and Sweden, most of Alaska, and northern Canada. With a really dark, clear sky, it may even be faintly visible in Scotland, northern England, and the northern US states.
Can I get alerts for a specific location?
Currently our alerts are Kp-based and apply globally — when Kp 5+ hits, the aurora is active across the entire auroral zone. We're working on location-specific cloud cover + Kp combined alerts. Subscribe now and you'll get access when it launches.
Is this free?
Yes, completely free. We monitor NOAA's data around the clock and send alerts as a service to the polar travel community. You can unsubscribe at any time.
The next aurora could be tonight
Solar Cycle 25 is peaking right now — the most geomagnetically active period in two decades. Don't miss it. Sign up for free alerts and be the first to know when the sky lights up.
Already watching the skies? Explore the best aurora destinations →