NOAA SOLAR DATA | 2026-09-13 03:00:02 UTC
VERY QUIET
MUF 20.0 MHz | S/N S0-1
109
SOLAR FLUX INDEX
FAIR
7
A-INDEX
QUIET
1
K-INDEX
QUIET
B3.7
X-RAY
NOMINAL
752.0
ELECTRON FLUX
ACTIVE
0.5
PROTON FLUX
NORMAL
PARTICLE RADIATION
20.0
MHz
MAX USABLE FREQ
HF OPEN
G0
GEOMAG STORM
NONE
R0
RADIO BLACKOUT
NONE
NOAA STORM SCALES
G0
GEOMAG FORECAST
NONE
R0
BLACKOUT FORECAST
NONE
24H FORECAST
HF BAND CONDITIONS
600m
86
DAY
GOOD
77
NIGHT
FAIR
160m
82
DAY
GOOD
74
NIGHT
FAIR
80m
80
DAY
GOOD
73
NIGHT
FAIR
40m
78
DAY
FAIR
71
NIGHT
FAIR
20m
73
DAY
FAIR
66
NIGHT
FAIR
10m
47
DAY
POOR
37
NIGHT
POOR
6m
46
DAY
POOR
36
NIGHT
POOR
7-DAY HISTORY
SOLAR INDICES
PARTICLE FLUX
Data source: NOAA Space Weather Prediction Center • Algorithm by RigReference • Classic view & widget embed codes