NOAA SOLAR DATA | 2026-09-15 02:00:03 UTC
UNSETTLED
MUF 18.9 MHz | S/N S2-3
104
SOLAR FLUX INDEX
FAIR
11
A-INDEX
QUIET
3
K-INDEX
ACTIVE
B2.8
X-RAY
NOMINAL
349.5
ELECTRON FLUX
ACTIVE
190.6
PROTON FLUX
ELEVATED
PARTICLE RADIATION
18.9
MHz
MAX USABLE FREQ
HF OPEN
G0
GEOMAG STORM
NONE
R0
RADIO BLACKOUT
NONE
NOAA STORM SCALES
G1
GEOMAG FORECAST
MINOR
R0
BLACKOUT FORECAST
NONE
24H FORECAST
HF BAND CONDITIONS
600m
80
DAY
GOOD
70
NIGHT
FAIR
160m
76
DAY
FAIR
67
NIGHT
FAIR
80m
75
DAY
FAIR
66
NIGHT
FAIR
40m
73
DAY
FAIR
65
NIGHT
FAIR
20m
68
DAY
FAIR
60
NIGHT
FAIR
10m
42
DAY
POOR
31
NIGHT
POOR
6m
40
DAY
POOR
30
NIGHT
POOR
7-DAY HISTORY
SOLAR INDICES
PARTICLE FLUX
Data source: NOAA Space Weather Prediction Center • Algorithm by RigReference • Classic view & widget embed codes