Home > Observation data > Monthly overview > Monthly overview (Oct 1999)

Monthly overview (Oct 1999)

The monthly mean values of the geomagnetic field components at Kakioka are D: -7��3.7��, H: 29999nT, Z: 35375nT and F: 46383nT for October 1999.

Monthly average of the K-index daily sum is 19.4. indicates an extremely high level of geomagnetic activity during the month.

Notable geomagnetic events include 1 magnetic storms, 2 si, 3 bay, 0 sfe, 9 pi and 0 pc.

The international 5 quietest days are the 6,7,19,20,30^th.

The international 5 most disturbed days are the 10,12,14,22,23^th.

Date	K-index daily sum	Geomagnetic activity	Geomagnetic phenomena	International 5 quietest days	International 5 quietest days	geomagnetic 1-minute value plot
1	16	moderately calm	bay			plot
2	17	moderately disturbed				plot
3	13	moderately calm				plot
4	21	moderately disturbed				plot
5	23	disturbed	pi			plot
6	13	moderately calm		��		plot
7	08	calm		��		plot
8	12	moderately calm	pi			plot
9	13	moderately calm				plot
10	29	disturbed			��	plot
11	25	disturbed				plot
12	32	disturbed	si		��	plot
13	26	disturbed				plot
14	26	disturbed	pi		��	plot
15	28	disturbed				plot
16	23	disturbed	pi			plot
17	18	moderately disturbed	pi			plot
18	11	moderately calm				plot
19	07	calm		��		plot
20	07	calm		��		plot
21	23	disturbed	storm si			plot
22	40	disturbed			��	plot
23	27	disturbed	bay pi			plot
24	25	disturbed	pi			plot
25	19	moderately disturbed	bay pi			plot
26	15	moderately calm				plot
27	20	moderately disturbed				plot
28	18	moderately disturbed				plot
29	16	moderately calm				plot
30	11	moderately calm				plot
31	18	moderately disturbed				plot

*) Plot diagram opens in a separate window.