The monthly mean values of the geomagnetic field components at Kakioka are D: -711.6, H: 29966nT, Z: 35520nT and F: 46472nT for February 2011.
Monthly average of the K-index daily sum is 8.5. indicates an extremely lowl level of geomagnetic activity during the month.
Notable geomagnetic events include 1 magnetic storms, 1 si, 2 bay, 2 sfe, 2 pi and 0 pc.
The international 5 quietest days are the 3,9,13,27,28th.
The international 5 most disturbed days are the 4,5,6,14,18th.
Plot of the geomagnetic hourly value for February 2011
Plot of the K-index daily total sum for 2011
Details of the geomagnetic storms in February 2011
| Date | K-index daily sum |
Geomagnetic activity |
Geomagnetic phenomena |
International 5 quietest days |
International 5 quietest days |
geomagnetic 1-minute value plot |
|---|---|---|---|---|---|---|
| 1 | 18 | moderately disturbed | pi | plot | ||
| 2 | 09 | calm | plot | |||
| 3 | 00 | extremely calm | plot | |||
| 4 | 21 | moderately disturbed | bay | plot | ||
| 5 | 21 | moderately disturbed | plot | |||
| 6 | 15 | moderately calm | plot | |||
| 7 | 06 | calm | plot | |||
| 8 | 01 | extremely calm | plot | |||
| 9 | 02 | extremely calm | sfe | plot | ||
| 10 | 10 | calm | plot | |||
| 11 | 06 | calm | bay | plot | ||
| 12 | 05 | calm | plot | |||
| 13 | 01 | extremely calm | plot | |||
| 14 | 13 | moderately calm | si pi | plot | ||
| 15 | 15 | moderately calm | sfe | plot | ||
| 16 | 02 | extremely calm | plot | |||
| 17 | 03 | extremely calm | plot | |||
| 18 | 28 | disturbed | storm | plot | ||
| 19 | 09 | calm | plot | |||
| 20 | 13 | moderately calm | plot | |||
| 21 | 14 | moderately calm | plot | |||
| 22 | 03 | extremely calm | plot | |||
| 23 | 04 | calm | plot | |||
| 24 | 02 | extremely calm | plot | |||
| 25 | 04 | calm | plot | |||
| 26 | 06 | calm | plot | |||
| 27 | 03 | extremely calm | plot | |||
| 28 | 04 | calm | plot |
*) Plot diagram opens in a separate window.
Copyright (c) Kakioka Magnetic Observatory, Japan Meteorological Agency. All rights reserved.
