NOAA forecasts Kp 5.0 from 03:00–06:00 UTC Oct. 20. Qaqortoq and Prins Christian Sund have 02:00–05:00 GMT−1; Qaanaaq, Siorapaluk and Savissivik have 00:00–03:00 ADT.
City forecast — 2026-10-20
| Country | City | Forecast window | Visibility call | Cloud risk |
|---|---|---|---|---|
| Greenland | Qaqortoq | Oct. 20, 02:00–05:00 GMT−1 (Kp 5.0) | WATCH | Check live cloud layer |
| Greenland | Prins Christian Sund | Oct. 20, 02:00–05:00 GMT−1 (Kp 5.0) | WATCH | Check live cloud layer |
| Greenland | Qaanaaq | Oct. 20, 00:00–03:00 ADT (Kp 5.0) | WATCH | Check live cloud layer |
| Greenland | Siorapaluk | Oct. 20, 00:00–03:00 ADT (Kp 5.0) | WATCH | Check live cloud layer |
| Greenland | Savissivik | Oct. 20, 00:00–03:00 ADT (Kp 5.0) | WATCH | Check live cloud layer |
Countries and cities in the aurora zone
Greenland
- Forecast window
- Oct. 20: 00:00–03:00 ADT or 02:00–05:00 GMT−1 (Kp 5.0)
- Move
- Use the local three-hour window for your city. Check darkness, clouds and the live city forecast before going out.
The listed Greenland cities have two local time windows.
NOAA forecasts Kp 5.0 for October 20, 03:00–06:00 UTC. This is a forecast interval, not an observation.
Qaqortoq and Prins Christian Sund have 02:00–05:00 GMT−1. Qaanaaq, Siorapaluk and Savissivik have 00:00–03:00 ADT.
What to do — 2026-10-20
Check the live city forecast before the local window.
Check darkness and cloud conditions again shortly before leaving.
Use the NOAA outlook as a planning signal, not a visibility guarantee.
Sources and live checks
This brief uses NOAA’s 3-day forecast bulletin issued October 18, 2026 at 00:30 UTC. The table forecasts Kp 5.0 for October 20, 03:00–06:00 UTC; city conditions still depend on local factors.