HF Propagation and Solar-Terrestrial Data Website
Free solar-terrestrial data displayed on your web page or site, updated every 3-hours.
Free solar-terrestrial data displayed on your web page or site, updated every 3-hours.
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This chart shows X-ray flux levels as measured by the GOES-13 and GOES-15 satellites. The measurements (shown in red) are used to issue alerts when X-ray flux levels exceed certain levels.
Sweet Rhythms Chart | Solar Radio THE SOLAR SWEET RHYTHMS CHART
Overall Solar Activity on 10.7cm. From 62.5 to 300, higher better. Overall activity of Earth''s magnetic field. Based on K-Index. Speed of Solar Wind in KM/s. Typically 0-1000, lower better;
BSDWorld provides valuable information on the impact of solar events for radio operators managing long-distance high-frequency communications.
2 days ago· Overall Solar Activity on 10.7cm. From 62.5 to 300, higher better. Overall
This chart is based on the NOAA Geophysical Alert Message (updated every three hours). Included are the Solar Flux, K-Index, and A-Index numbers for the past six months.
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High frequency and VHF radio propagation data, solar and geomagnetic real-time and historic data, sunspot activity reports, as well as forecasts. A comprehensive propagation resource compiled by
These graphs show the solar x-ray flux levels for the past three days, as well as the past six hours. A solar flare will produce a dramatic spike in levels, these x-rays can ionize the D-layer of the
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