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Monthly overview (May 2021)

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, 2 si, 2 bay, 0 sfe, 4 pi and 0 pc.

The international 5 quietest days are the 5,7,24,28,31^th.

The international 5 most disturbed days are the 12,18,20,26,27^th.

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 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.