What happened on 2026-09-24
The storm came in below the forecast. NOAA's observed planetary K index peaked at 3.0, under the forecast peak of Kp 5.3 this brief was based on.
This event is over. For the next viewing chance, check the live 72-hour forecast for your city — conditions change every few hours.
City forecast
| City | Forecast window |
|---|---|
| Narsarsuaq | Sep 24, 02:00–05:00 GMT-1 |
| Qaqortoq | Sep 24, 02:00–05:00 GMT-1 |
| Prins Christian Sund | Sep 24, 02:00–05:00 GMT-1 |
| Ilulissat | Sep 24, 02:00–05:00 GMT-1 |
| Aasiaat | Sep 24, 02:00–05:00 GMT-1 |
| Danmarkshavn | Sep 24, 03:00–06:00 GMT |
| Savissivik | Sep 24, 00:00–03:00 ADT |
| Qaanaaq | Sep 24, 00:00–03:00 ADT |
This alert names cities so you can use the viewing window listed for your location.
NOAA’s 3-day forecast, issued September 22 at 00:30 UTC, places its Kp 5.33 peak at 03:00–06:00 UTC on September 24. That is 02:00–05:00 GMT-1 in Narsarsuaq, Qaqortoq, Ilulissat and Aasiaat.
Cloud cover and local darkness determine whether that geomagnetic forecast becomes a visible display. Check the live forecast for the Greenland city where you plan to observe before travelling.
What to do
- Check your live city forecast and cloud conditions before leaving.
- Choose a dark viewing spot with an open sky for your city's listed window.
- Save your city in AuroraMe and enable the aurora alert.
Sources and live checks
NOAA SWPC’s 3-day forecast was issued September 22 at 00:30 UTC; this brief also uses AuroraMe’s 72-hour city forecast, OVATION and local visibility factors.