Day / Night Map
Live grayline & terminator — grayline propagation favors long-distance low-band contacts
Daylight
Night
Terminator / Grayline
UTC: — · Subsolar point: —
HF Band Info
Live HF band propagation conditions by time of day, from N0NBH's calculated table
| Band | Daytime | Nighttime |
|---|---|---|
| 80m – 40m 3.5 – 7.3 MHz | — | — |
| 30m – 20m 10.1 – 14.35 MHz | — | — |
| 17m – 15m 18.068 – 21.45 MHz | — | — |
| 12m – 10m 24.89 – 29.7 MHz | — | — |
Solar Conditions
Core indicators driving today's propagation
Sunspot Number
—
Derived from number of sunspots + groups. 0–250, higher is better.
Solar Flux
—
Overall solar activity at 10.7cm. 62.5–300, higher is better.
Geomagnetic Storm
—
Overall activity of Earth's magnetic field, based on K-index.
Solar Wind
—
Speed of solar wind in km/s. Typically 0–1000; lower is better.
Noise Floor
—
Approximate band noise contributed by solar/geomagnetic activity.
Other Solar Conditions
Secondary indices used for finer-grained propagation estimates
A-Index
—
Average geomagnetic activity over the last 24 hours.
Kp-Index
—
Geomagnetic field disturbance. 0–9, lower is better.
X-Ray Flux
—
Intensity of X-rays in the ionosphere. A/B/C/M/X indicate magnitude.
Proton Flux
—
Density of charged protons (≥10 MeV) in the solar wind. Impacts the E-layer.
Bz (IMF)
—
Interplanetary magnetic field, north/south component. Negative Bz drives storms.
Latest Flare
—
Most recent GOES X-ray flare classification.
VHF & E-Skip Propagation
Live band-opening indicators from N0NBH's calculated conditions
VHF Aurora
—
Northern Hemisphere
E-Skip
—
10m & 6m North America
E-Skip
—
10m & 6m Europe
E-Skip 6m
—
Europe
E-Skip 4m
—
Europe
For confirmed real-time band openings, cross-check DXMaps or PSKReporter.