HF Propagation Forecast

Propagation Forecast Charts based on recent conditions

Regional Propagation Maps based on ham activity and ionosondes Pros: Show geographical distribution Cons: Implicit info about disruptions!   Recent Ham Activity (last 15 minutes) real-time reports on 11 bands (160-6 m). Recent MUF Conditions (last 15 minutes) Iso-frequency contours of 8 ham bands based on data from ionosondes. The predicted Regional LUF Conditions Global map of the recent LUF shows the predicted attenuation from 3 to 35 MHz due to solar and spaceweather events. Point-to-Point 24-hour forecast—HF planner

Global Conditions Charts based on solar-terrestrial data. Pros: Comm. disruptions at a glance Cons: No geographical distribution!   Today's Propagation indices by Paul L Herrman, N0NBH HamQSL HF score for the 17-10 m bands HF Activity Group review 48-hours Recent R-S-G reports Solar flares | More Space weather reports

Forecasting vs. Prediction

The terms forecasting and prediction differ primarily in their time frames and methodologies.

• Forecasting: Short-term estimations based on current data (e.g., "Conditions will improve in the next hour").
• Prediction: Long-term estimates based on trends (e.g., "Better 40-meter conditions expected next month").

Evolution of forecasting techniques

Remarkable advancements in space technology ↗, software-defined radio (SDR) ↗, and the internet have revolutionized our understanding of radio wave propagation. Before the 1990s, propagation charts and reports were often published in amateur radio magazines. Today, real-time solar indices and computer programs provide accurate, up-to-the-minute propagation data using online tools ↗.

Total visits since 17 August 2022.
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