NOAA SOLAR DATA | 2026-06-16 05:00:05 UTC
QUIET
MUF 21.7 MHz | S/N S1-2
117
SOLAR FLUX INDEX
FAIR
6
A-INDEX
QUIET
2
K-INDEX
QUIET
B5.0
X-RAY
NOMINAL
647.2
ELECTRON FLUX
ACTIVE
0.3
PROTON FLUX
NORMAL
PARTICLE RADIATION
21.7
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
88
DAY
GOOD
78
NIGHT
FAIR
160m
84
DAY
GOOD
75
NIGHT
FAIR
80m
82
DAY
GOOD
74
NIGHT
FAIR
40m
79
DAY
FAIR
72
NIGHT
FAIR
20m
74
DAY
FAIR
67
NIGHT
FAIR
10m
48
DAY
POOR
38
NIGHT
POOR
6m
47
DAY
POOR
37
NIGHT
POOR
7-DAY HISTORY
SOLAR INDICES
PARTICLE FLUX
Data source: NOAA Space Weather Prediction Center • Algorithm by RigReference • Classic view & widget embed codes