What happened on 2026-09-09
The storm came in below the forecast. NOAA's observed planetary K index peaked at 3.0, under the forecast peak of Kp 5.7 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 |
|---|---|
| Churchill | September 9 local darkness; check the current forecast |
| Thompson | September 9 local darkness; check the current forecast |
| Fort McMurray | September 9 local darkness; check the current forecast |
| Hay River | September 9 local darkness; check the current forecast |
| Rankin Inlet | September 9 local darkness; check the current forecast |
| Edmonton | September 9 local darkness; check the current forecast |
| Dawson City | September 9 local darkness; check the current forecast |
| Grande Prairie | September 9 local darkness; check the current forecast |
A Kp forecast is global; darkness and clouds are local.
Churchill, Thompson, Fort McMurray, Hay River, Rankin Inlet, Edmonton, Dawson City and Grande Prairie remain useful places to monitor. Their viewing conditions differ with darkness, cloud cover and local horizon.
AuroraMe's model peaks near 21:00 UTC, and NOAA's September 9 outlook reaches Kp 5.67 at 21:00–00:00 UTC. A local night can fall on a different calendar date than the UTC forecast period, so use local time to check darkness rather than as a promised viewing window.
What to do
- Check whether it is dark at your location.
- Check cloud cover close to the time you plan to look.
- Use AuroraMe's 72-hour city forecast and enable aurora alerts for updates.
Sources and live checks
AuroraMe live model data generated September 9, 2026 at 12:41 UTC reaches Kp 5.7 near 21:00 UTC on September 9. NOAA SWPC's 3-day forecast issued September 9, 2026 at 12:30 UTC forecasts a Kp 5.67 maximum at 21:00–00:00 UTC.