The monthly mean values of the geomagnetic field components at Kakioka are D: -7°-47.3′°, H: 30090nT, Z: 35882nT and F: 46829nT for May 2021.
Monthly average of the K-index daily sum is 10.5. indicates a low level of geomagnetic activity during the month.
Notable geomagnetic events include 1 magnetic storms, 3 si, 2 bay, 0 sfe, 4 pi and 0 pc.
The international 5 quietest days are the 5,7,24,28,31th.
The international 5 most disturbed days are the 12,18,20,26,27th.
Plot of the geomagnetic hourly value for May 2021
Plot of the K-index daily total sum for 2021
Details of the geomagnetic storms in May 2021
| Date | K-index daily sum |
Geomagnetic activity |
Geomagnetic phenomena |
International 5 quietest days |
International 5 quietest days |
geomagnetic 1-minute value plot |
|---|---|---|---|---|---|---|
| 1 | 10 | calm | plot | |||
| 2 | 18 | moderately disturbed | plot | |||
| 3 | 12 | moderately calm | si | plot | ||
| 4 | 06 | calm | plot | |||
| 5 | 03 | extremely calm | ○ | plot | ||
| 6 | 06 | calm | plot | |||
| 7 | 06 | calm | ○ | plot | ||
| 8 | 04 | calm | plot | |||
| 9 | 07 | calm | plot | |||
| 10 | 13 | moderately calm | pi | plot | ||
| 11 | 05 | calm | plot | |||
| 12 | 24 | disturbed | storm si bay pi | ○ | plot | |
| 13 | 16 | moderately calm | plot | |||
| 14 | 08 | calm | plot | |||
| 15 | 14 | moderately calm | pi | plot | ||
| 16 | 09 | calm | plot | |||
| 17 | 09 | calm | plot | |||
| 18 | 20 | moderately disturbed | ○ | plot | ||
| 19 | 12 | moderately calm | plot | |||
| 20 | 20 | moderately disturbed | ○ | plot | ||
| 21 | 10 | calm | plot | |||
| 22 | 09 | calm | plot | |||
| 23 | 04 | calm | plot | |||
| 24 | 03 | extremely calm | ○ | plot | ||
| 25 | 04 | calm | plot | |||
| 26 | 14 | moderately calm | si | ○ | plot | |
| 27 | 25 | disturbed | ○ | plot | ||
| 28 | 07 | calm | ○ | plot | ||
| 29 | 10 | calm | pi | plot | ||
| 30 | 11 | moderately calm | plot | |||
| 31 | 06 | calm | ○ | plot |
*) Plot diagram opens in a separate window.
