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The plot labelled as "Now" shows the present situation. The green zone (if any) indicates the auroral oval estimated by magnetometer recordings. Other plots show forecasts for which green indicates a high probability of auroras and light green refers to a smaller probability. In case of low activity, we use an empirical oval drawn with a grey colour. Cloudiness maps are based on FMI weather forecasts.
27.04.2025 21:56:09 UTC, rise and set times in local time
| station | STA | max_dB | activity | sunrise | sunset | moonrise | moonset |
| Tromsø | TRO | 0.63 | 1 | 03:41 | 21:46 | 03:30 | 22:39 |
| Kevo | KEV | 0.54 | 0 | 04:07 | 22:15 | 03:57 | 23:05 |
| Muonio | MUO | 0.19 | 0 | 04:40 | 22:09 | 04:25 | 22:47 |
| Oulujärvi | OUJ | 0.03 | 0 | 04:54 | 21:25 | 04:33 | 21:48 |
| Hankasalmi | HAN | 0.03 | 0 | 05:10 | 21:13 | 04:48 | 21:32 |
| Dombås | DOB | 0.03 | 0 | 05:21 | 21:22 | 04:58 | 21:45 |
| Nurmijärvi | NUR | 0.02 | 0 | 05:27 | 21:12 | 05:03 | 21:27 |
| Karmøya | KAR | 0.03 | 0 | 05:51 | 21:23 | 05:26 | 21:42 |
Previous new Moon: 27.04.2025 - Next full Moon: 12.05.2025
The table shows the maximum 1-min time derivative (dB/dt) of the magnetic field (north or east component) at a few magnetometer stations during the latest hour. The unit is nT/s. The activity codes are defined as follows:
0: auroras unlikely seen at the station (black dot on the first map)
1: auroras likely (red dot)
2: data missing (white dot)
They are empirically determined based on the maximum dB/dt. Sunrise, sunset, moonrise and moonset are given at an accuracy of a few minutes. If the Sun is shining then the auroral oval just indicates the region where increased geomagnetic activity is probable. N/A: no rise or set time. Sun above the horizon all the time: +; Sun below the horizon all the time: -.
This page is automatically created. There is only a simple automatic quality check of magnetometer data, and we cannot guarantee an error-free service.