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 |
|---|---|
| Thompson | Sep 23, 22:00–Sep 24, 01:00 CDT |
| Rankin Inlet | Sep 23, 22:00–Sep 24, 01:00 CDT |
| Fort McMurray | Sep 23, 21:00–Sep 24, 00:00 MDT |
| Prince Albert | Sep 23, 21:00–Sep 24, 00:00 CST |
The listed cities share NOAA’s September 24 UTC geomagnetic forecast.
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 late on September 23 in much of Canada.
Cloud cover and local darkness determine whether that geomagnetic forecast becomes a visible display. Check the live forecast for the Canadian city where you plan to observe before travelling.
What to do
- Check your live city forecast for current odds and clouds.
- Choose a nearby dark spot with an open view.
- Use your city's listed local time and save it in AuroraMe for an 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.