This forecast covered the night of 2026-10-11. It stays online as a record of what was forecast. For current conditions, check the live forecast. Live aurora forecast

Denmark aurora recap: original Kp 5.7 forecast

Original forecast checked October 10 at 19:03 UTC placed Kp 5.67 in this article’s specified October 11 interval. NOAA’s planetary K index was later observed lower in that same interval; this is a global measurement, not a city visibility report.

By AuroraMe Space Weather Desk Published Oct 10, 2026, 21:06 CEST Updated Oct 11, 2026, 21:18 CEST
Aurora forecast WATCH

This recap compares the original global Kp forecast with the observed planetary K index for the same three-hour interval. It is not a city visibility report.

Original forecast Kp 5.67 For 00:00–03:00 UTC on October 11
Observed planetary Kp 4.0 Same 00:00–03:00 UTC interval; not city visibility
Horsens 02:00–05:00 CEST Oct 11 on mainland Denmark
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What happened in the original forecast window

NOAA’s planetary K index was observed at 4.0 during 00:00–03:00 UTC on October 11, below this article’s original Kp 5.67 forecast for that exact interval. This is a global geomagnetic reading, not a report of visibility in any city.

City forecast

Country City Forecast window
Faroe Islands (Kingdom of Denmark) Klaksvík Oct 11, 01:00–04:00 WEST (Kp 5.67)
Faroe Islands (Kingdom of Denmark) Vágar Oct 11, 01:00–04:00 WEST (Kp 5.67)
Faroe Islands (Kingdom of Denmark) Runavík Oct 11, 01:00–04:00 WEST (Kp 5.67)
Mainland Denmark Horsens Oct 11, 02:00–05:00 CEST (Kp 5.67)
NOAA northern hemisphere aurora forecast map
AuroraMe combines Kp with magnetic latitude, darkness, moon and cloud data for a live city forecast.

The Faroe Islands and mainland Denmark have different local forecast windows.

This article’s local windows and Kp 5.67 figure are the original forecast for its specified three-hour interval.

NOAA later observed a lower planetary K index in that same interval. This global measurement does not report city visibility.

What to do

  1. Use the local window for the Faroe Islands or Horsens, not the UTC time alone.
  2. Check cloud and darkness before departure.
  3. Open the live city forecast again shortly before the window.

Sources and live checks

Original article figures use NOAA SWPC’s Planetary K-index forecast JSON retrieved October 10 at 19:03 UTC. NOAA’s forecast feed checked October 11 at 19:18 UTC records observed Kp 4.0 for 00:00–03:00 UTC on October 11, below the original Kp 5.67 forecast for that exact interval; this is not a city visibility report.