The monthly mean values of the geomagnetic field components at Kakioka are D: -7°-59.1′°, H: 30116nT, Z: 36006nT and F: 46940nT for October 2025.
Monthly average of the K-index daily sum is 18.4. indicates a high level of geomagnetic activity during the month.
Notable geomagnetic events include 2 magnetic storms, 1 si, 11 bay, 0 sfe, 8 pi and 2 pc.
The international 5 quietest days are the 6,9,16,22,26th.
The international 5 most disturbed days are the 1,2,12,18,30th.
Plot of the geomagnetic hourly value for October 2025
Plot of the K-index daily total sum for 2025
Details of the geomagnetic storms in October 2025
| Date | K-index daily sum |
Geomagnetic activity |
Geomagnetic phenomena |
International 5 quietest days |
International 5 quietest days |
geomagnetic 1-minute value plot |
|---|---|---|---|---|---|---|
| 1 | 31 | disturbed | ○ | plot | ||
| 2 | 31 | disturbed | ○ | plot | ||
| 3 | 27 | disturbed | plot | |||
| 4 | 23 | disturbed | plot | |||
| 5 | 14 | moderately calm | plot | |||
| 6 | 8 | calm | ○ | plot | ||
| 7 | 19 | moderately disturbed | plot | |||
| 8 | 17 | moderately disturbed | plot | |||
| 9 | 12 | moderately calm | ○ | plot | ||
| 10 | 16 | moderately calm | plot | |||
| 11 | 24 | disturbed | plot | |||
| 12 | 28 | disturbed | ○ | plot | ||
| 13 | 25 | disturbed | plot | |||
| 14 | 12 | moderately calm | plot | |||
| 15 | 15 | moderately calm | plot | |||
| 16 | 9 | calm | ○ | plot | ||
| 17 | 18 | moderately disturbed | plot | |||
| 18 | 32 | disturbed | ○ | plot | ||
| 19 | 21 | moderately disturbed | plot | |||
| 20 | 13 | moderately calm | plot | |||
| 21 | 13 | moderately calm | plot | |||
| 22 | 9 | calm | ○ | plot | ||
| 23 | 7 | calm | plot | |||
| 24 | 16 | moderately calm | plot | |||
| 25 | 10 | calm | plot | |||
| 26 | 7 | calm | ○ | plot | ||
| 27 | 12 | moderately calm | plot | |||
| 28 | 23 | disturbed | plot | |||
| 29 | 23 | disturbed | plot | |||
| 30 | 31 | disturbed | ○ | plot | ||
| 31 | 25 | disturbed | plot |
*) Plot diagram opens in a separate window.
