NOAA SOLAR DATA | 2026-06-03 19:00:02 UTC
QUIET
MUF 27.6 MHz | S/N S1-2
146
SOLAR FLUX INDEX
GOOD
6
A-INDEX
QUIET
2
K-INDEX
QUIET
C1.0
X-RAY
MINOR FLARE
726.4
ELECTRON FLUX
ACTIVE
7.5
PROTON FLUX
NORMAL
PARTICLE RADIATION
27.6
MHz
MAX USABLE FREQ
HF OPEN
G0
GEOMAG STORM
NONE
R3
RADIO BLACKOUT
STRONG
NOAA STORM SCALES
G3
GEOMAG FORECAST
STRONG
R0
BLACKOUT FORECAST
NONE
24H FORECAST
HF BAND CONDITIONS
600m
87
DAY
GOOD
75
NIGHT
FAIR
160m
83
DAY
GOOD
72
NIGHT
FAIR
80m
81
DAY
GOOD
70
NIGHT
FAIR
40m
79
DAY
FAIR
69
NIGHT
FAIR
20m
74
DAY
FAIR
63
NIGHT
FAIR
10m
57
DAY
FAIR
44
NIGHT
POOR
6m
46
DAY
POOR
33
NIGHT
POOR
7-DAY HISTORY
SOLAR INDICES
PARTICLE FLUX
Data source: NOAA Space Weather Prediction Center • Algorithm by RigReference • Classic view & widget embed codes