Solar flares, geomagnetic activity, and Schumann resonance forecast for Today, 18 May 2026 utc
Solar flare
B8
K-Index
5
Schumann
good
C1
6.1
H
Apr 18
B6
5.7
H
Apr 19
C1
5
g
Apr 20
C5
5
g
Apr 21
C3
2.7
n
Apr 22
M5
3.2
H
Apr 23
X2
3.3
H
Apr 24
M1
3.3
g
Apr 25
M6
4.8
n
Apr 26
M1
3
H
Apr 27
M1
2.6
n
Apr 28
C5
2.7
n
Apr 29
C5
4.7
g
Apr 30
C7
5.3
n
May 01
C8
3.4
H
May 02
C3
4.2
H
May 03
M1
6.3
n
May 04
C6
5
H
May 05
C1
3.1
H
May 06
M2
3.9
g
May 07
C4
4.6
H
May 08
C2
2.8
H
May 09
M5
3
H
May 10
C1
2.8
n
May 11
C2
2.6
H
May 12
C2
4.3
g
May 13
C5
3.1
g
May 14
C9
6.3
g
May 15
M2
5.9
H
May 16
M1
3.8
n
May 17
B8
5
g
May 18
5.3
N/A
N/A
May 19
2.3
N/A
N/A
May 20
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