The monthly mean values of the geomagnetic field components at Kakioka are D: -73, H: 30027nT, Z: 35344nT and F: 46378nT for August 1998.
Monthly average of the K-index daily sum is 18. indicates a high level of geomagnetic activity during the month.
Notable geomagnetic events include 2 magnetic storms, 1 si, 1 bay, 7 sfe, 5 pi and 1 pc.
The international 5 quietest days are the 9,15,16,17,18th.
The international 5 most disturbed days are the 6,7,26,27,28th.
Plot of the geomagnetic hourly value for August 1998
Plot of the K-index daily total sum for 1998
Details of the geomagnetic storms in August 1998
| Date | K-index daily sum |
Geomagnetic activity |
Geomagnetic phenomena |
International 5 quietest days |
International 5 quietest days |
geomagnetic 1-minute value plot |
|---|---|---|---|---|---|---|
| 1 | 28 | disturbed | plot | |||
| 2 | 17 | moderately disturbed | plot | |||
| 3 | 14 | moderately calm | pi | plot | ||
| 4 | 15 | moderately calm | plot | |||
| 5 | 14 | moderately calm | plot | |||
| 6 | 34 | disturbed | storm pi | plot | ||
| 7 | 24 | disturbed | plot | |||
| 8 | 12 | moderately calm | sfe pi | plot | ||
| 9 | 06 | calm | plot | |||
| 10 | 22 | moderately disturbed | plot | |||
| 11 | 14 | moderately calm | plot | |||
| 12 | 15 | moderately calm | plot | |||
| 13 | 14 | moderately calm | pi | plot | ||
| 14 | 18 | moderately disturbed | plot | |||
| 15 | 13 | moderately calm | plot | |||
| 16 | 04 | calm | plot | |||
| 17 | 01 | extremely calm | sfe | plot | ||
| 18 | 08 | calm | sfe | plot | ||
| 19 | 14 | moderately calm | si sfe | plot | ||
| 20 | 23 | disturbed | plot | |||
| 21 | 08 | calm | plot | |||
| 22 | 26 | disturbed | bay | plot | ||
| 23 | 25 | disturbed | plot | |||
| 24 | 14 | moderately calm | sfe | plot | ||
| 25 | 16 | moderately calm | plot | |||
| 26 | 30 | disturbed | storm pc | plot | ||
| 27 | 41 | disturbed | pi | plot | ||
| 28 | 27 | disturbed | plot | |||
| 29 | 19 | moderately disturbed | plot | |||
| 30 | 21 | moderately disturbed | plot | |||
| 31 | 21 | moderately disturbed | plot |
*) Plot diagram opens in a separate window.
Copyright (c) Kakioka Magnetic Observatory, Japan Meteorological Agency. All rights reserved.
