Solar flares, geomagnetic activity, and Schumann resonance forecast for Today, 13 Dec 2025 utc
Solar flare
C8
K-Index
6
Schumann
normal
C6
8.6
H
Nov 13
X4
3.1
n
Nov 14
C8
6
H
Nov 15
M3
5
H
Nov 16
C7
5
H
Nov 17
C2
3.2
n
Nov 18
C9
2.5
n
Nov 19
C2
4
H
Nov 20
C3
4
H
Nov 21
C6
4
H
Nov 22
C1
5
H
Nov 23
C2
6
H
Nov 24
C2
7
n
Nov 25
C2
6
H
Nov 26
C3
7
H
Nov 27
M6
6
H
Nov 28
M2
6
H
Nov 29
C9
6
H
Nov 30
X1
6
H
Dec 01
C5
4
H
Dec 02
C5
7
H
Dec 03
M6
6
n
Dec 04
C7
6
H
Dec 05
M8
4.4
H
Dec 06
C7
4.1
H
Dec 07
X1
2.6
H
Dec 08
M2
3.1
H
Dec 09
M4
8
H
Dec 10
C9
7
H
Dec 11
M2
6
H
Dec 12
C8
6
n
Dec 13
3.7
N/A
N/A
Dec 14
3
N/A
N/A
Dec 15