Amateur Radio Propagation Report

📋 Propagation Summary

Today’s HF propagation conditions are looking favorable for most amateur radio operations, thanks to a high solar flux (162) and a low K-index (1.33), indicating quiet geomagnetic conditions. Expect good openings on the higher bands (20m–10m) during the day, with 80m and 40m performing best at night. The current sunspot number (116) and moderate X-ray activity (C1.1) support reliable daytime DX, especially on 15m and 12m. Operators should take advantage of stable space weather, as no major disturbances or warnings are present. Now is a great time to chase DX and experiment with both voice and digital modes!

💡 Operator Tips

• Daytime: Focus on 20m, 17m, 15m, and 12m for long-haul DX; SSB and FT8 will both perform well.
• Nighttime: Switch to 80m and 40m for regional and intercontinental contacts; CW and digital modes can help punch through any noise.
• Equipment: Use directional antennas on higher bands for best results; verticals and dipoles will work well on lower bands at night.
• Modes: Digital modes (FT8, FT4) are especially effective during marginal conditions.
• Contesting/DX: Now is a prime window for DXpeditions and contests—monitor grayline times for enhanced propagation.

⏰ Best Operating Times

• 80m & 40m: Best after sunset through sunrise (night/early morning)
• 20m: Good all day, with peaks mid-morning to late afternoon
• 17m & 15m: Strongest from late morning through early evening
• 12m & 10m: Openings likely late morning to mid-afternoon; check for sporadic E and F2 openings

🌍 DX Opportunities

• Grayline: Enhanced long-path DX around local sunrise and sunset, especially on 40m and 20m.
• High Bands: 15m and 12m are open for trans-equatorial and polar paths—watch for short, strong DX openings.
• Aurora: Aurora activity is low (index 4), so VHF/UHF auroral propagation is not expected.
• Special Events: No major space weather events or warnings—take advantage of the stable conditions for rare DX and contests.

📻 Band-by-Band Analysis

The 20m, 17m, and 15m bands are performing consistently well throughout the day and evening, making them the best choices for both DX and regional contacts. 12m and 10m are open during daylight hours, so check these bands for surprise openings, especially late morning and early afternoon. 80m and 40m are poor during the day but good at night—ideal for local and regional QSOs after sunset.

📊 Current Solar Activity

• K-index: 1.33 — Very quiet geomagnetic field, ideal for HF propagation with minimal absorption or auroral effects.
• Solar Flux: 162 — High solar flux means strong ionization of the F-layer, supporting robust propagation on higher bands (20m–10m).
• Sunspot Number: 116 — Healthy sunspot count sustaining good propagation, especially for DX on 15m and 12m.
• Space Weather Overview: No major solar storms or warnings; X-ray activity is moderate (C1.1), so only minor shortwave fadeouts possible.

📈 Geomagnetic Conditions

The K-index has remained low and stable (mostly between 1 and 2) over the past 24 hours, with only brief upticks to 3.33. This trend indicates quiet geomagnetic conditions, which are excellent for HF propagation—especially on polar and trans-equatorial paths. No geomagnetic storms or sudden disturbances are present, so expect continued stable conditions for the next day or two.

🌟 Space Weather Details

• X-ray Activity: C1.1 — Moderate, with no major solar flares. Only minor risk of short-lived HF blackouts.
• Solar Wind: 344.2 km/s — Typical, not fast enough to trigger geomagnetic storms. Minimal impact on HF.
• Particle Environment: Electron flux (2020) and proton flux (141) are within normal ranges, so no significant absorption or polar cap absorption events.
• Aurora Activity: 4 — Low; auroral propagation on VHF/UHF is unlikely, but keep an ear out in far northern latitudes.
• Helium Line: 124.6 — Indicates stable solar activity; no major uptrends or downtrends.

📡 Propagation Timeline & Technical Details

Recent months show a slight downward trend in both solar flux and sunspot numbers since late 2025, but current values remain well above average, supporting good HF conditions. The solar flux has ranged from 135 to 162, and sunspot numbers have stayed above 75—both strong indicators for continued high-band activity.

🔮 3-Day Forecast

• Propagation is expected to remain stable with continued low K-index and moderate-to-high solar flux.
• Best bands: 20m, 17m, and 15m will continue to offer the most reliable DX and regional contacts.
• Watch for: Possible short-lived fadeouts from minor X-ray activity, but no major storms or warnings are forecast.
• VHF/UHF: Little to no auroral enhancement expected; focus on HF for the best results.
• Advice: Plan DX and contest activity for daylight and early evening hours on the high bands; switch to 80m/40m after dark for local and regional QSOs.