City aurora forecast
Aurora Forecast for Tromso, Northern Norway
No visible aurora signal for Tromso right now
One of the strongest routine aurora zones in Europe and a benchmark city for Kp-independent displays.
Current Kp: --. Tromso typically needs about Kp 2 before reliable visual reports start showing up.
Tromso sits at 69.6° latitude with an estimated Bortle 4 urban-light baseline. Drive away from core lighting before judging a marginal Kp event.
Current cloud cover: 75%. It is currently daytime locally, so visual aurora odds remain theoretical until darkness returns.
Quiet conditions keep HF polar paths closer to normal.
Keep polar routes on watch and re-check if Bz turns south.
Open full aurora dashboardThe auroral oval usually sits well north of mid-latitudes during quiet conditions. A stronger Kp expands that oval southward. For Tromso, the practical storm threshold is about Kp 2, but a long southward Bz interval matters almost as much as the raw Kp number.
If you are below about 50° latitude, treat Kp 5 as the first serious threshold. Above 60° latitude, even Kp 2-3 can be enough under dark skies.