NOAA SOLAR DATA | 2026-08-03 09:00:02 UTC
ACTIVE
MUF 23.8 MHz | S/N S3-4
127
SOLAR FLUX INDEX
GOOD
17
A-INDEX
QUIET
4
K-INDEX
ACTIVE
B9.9
X-RAY
NOMINAL
137.3
ELECTRON FLUX
ACTIVE
228.0
PROTON FLUX
ELEVATED
PARTICLE RADIATION
23.8
MHz
MAX USABLE FREQ
HF OPEN
G2
GEOMAG STORM
MODERATE
R0
RADIO BLACKOUT
NONE
NOAA STORM SCALES
G1
GEOMAG FORECAST
MINOR
R0
BLACKOUT FORECAST
NONE
24H FORECAST
HF BAND CONDITIONS
600m
85
DAY
GOOD
73
NIGHT
FAIR
160m
82
DAY
GOOD
71
NIGHT
FAIR
80m
80
DAY
GOOD
70
NIGHT
FAIR
40m
78
DAY
FAIR
69
NIGHT
FAIR
20m
73
DAY
FAIR
64
NIGHT
FAIR
10m
56
DAY
FAIR
45
NIGHT
POOR
6m
45
DAY
POOR
34
NIGHT
POOR
7-DAY HISTORY
SOLAR INDICES
PARTICLE FLUX
Data source: NOAA Space Weather Prediction Center • Algorithm by RigReference • Classic view & widget embed codes