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Monthly overview (May 1998)

The monthly mean values of the geomagnetic field components at Kakioka are D: -7°-2.7′°, H: 30034nT, Z: 35337nT and F: 46376nT for May 1998.

Monthly average of the K-index daily sum is 17.6. indicates a high level of geomagnetic activity during the month.

Notable geomagnetic events include 2 magnetic storms, 6 si, 1 bay, 0 sfe, 9 pi and 0 pc.

The international 5 quietest days are the 6,13,14,28,31^th.

The international 5 most disturbed days are the 2,3,4,5,29^th.

Date	K-index daily sum	Geomagnetic activity	International 5 quietest days	International 5 quietest days	geomagnetic 1-minute value plot
1	15	moderately calm			plot
2	33	disturbed		○	plot
3	35	disturbed		○	plot
4	39	disturbed		○	plot
5	23	disturbed		○	plot
6	08	calm	○		plot
7	16	moderately calm			plot
8	23	disturbed			plot
9	21	moderately disturbed			plot
10	16	moderately calm			plot
11	17	moderately disturbed			plot
12	19	moderately disturbed			plot
13	05	calm	○		plot
14	03	extremely calm	○		plot
15	11	moderately calm			plot
16	18	moderately disturbed			plot
17	14	moderately calm			plot
18	15	moderately calm			plot
19	13	moderately calm			plot
20	18	moderately disturbed			plot
21	20	moderately disturbed			plot
22	13	moderately calm			plot
23	18	moderately disturbed			plot
24	19	moderately disturbed			plot
25	19	moderately disturbed			plot
26	15	moderately calm			plot
27	14	moderately calm			plot
28	12	moderately calm	○		plot
29	23	disturbed		○	plot
30	23	disturbed			plot
31	08	calm	○		plot

*) Plot diagram opens in a separate window.