Home > Observation data > Monthly overview > Monthly overview (Sep 2001)

Monthly overview (Sep 2001)

The monthly mean values of the geomagnetic field components at Kakioka are D: -7°-3.2′°, H: 30003nT, Z: 35375nT and F: 46385nT for September 2001.

Monthly average of the K-index daily sum is 15.5. indicates a slightly high level of geomagnetic activity during the month.

Notable geomagnetic events include 2 magnetic storms, 4 si, 1 bay, 7 sfe, 0 pi and 0 pc.

The international 5 quietest days are the 1,7,9,10,21^th.

The international 5 most disturbed days are the 15,23,26,29,30^th.

Date	K-index daily sum	Geomagnetic activity	Geomagnetic phenomena	International 5 quietest days	International 5 quietest days	geomagnetic 1-minute value plot
1	11	moderately calm		○		plot
2	09	calm	sfe			plot
3	20	moderately disturbed				plot
4	20	moderately disturbed				plot
5	10	calm				plot
6	06	calm	sfe			plot
7	09	calm		○		plot
8	09	calm	sfe			plot
9	10	calm	sfe	○		plot
10	07	calm		○		plot
11	17	moderately disturbed				plot
12	18	moderately disturbed				plot
13	20	moderately disturbed				plot
14	20	moderately disturbed	si			plot
15	20	moderately disturbed			○	plot
16	12	moderately calm	sfe			plot
17	11	moderately calm				plot
18	19	moderately disturbed				plot
19	12	moderately calm				plot
20	11	moderately calm				plot
21	06	calm		○		plot
22	15	moderately calm				plot
23	28	disturbed			○	plot
24	14	moderately calm				plot
25	18	moderately disturbed	storm si sfe			plot
26	24	disturbed			○	plot
27	17	moderately disturbed				plot
28	21	moderately disturbed				plot
29	28	disturbed	si bay		○	plot
30	23	disturbed	storm si		○	plot

*) Plot diagram opens in a separate window.