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Solar Reports

SFI Kp Conditions

Updated 03:00 UTC 2026-04-07 · NOAA SWPC

Solar conditions directly affect HF propagation. These reports correlate real solar indices with measured spot data — not theoretical models. Every solar value shown here is joined against actual signal measurements at 3-hour resolution.

Pages

  • Current Conditions — Live SFI, Kp, SSN, and X-ray flux with 7-day trends and current band impact assessment.
  • Storm Impact — Measured SNR degradation during geomagnetic storms (Kp >= 5), by band, with recovery timelines.
  • Solar Cycle 25 — Where we are in the current cycle. Monthly SSN/SFI tracking and IONIS prediction accuracy over time.

Current Solar Indices

Metric Value Updated
SFI 145 2026-04-07
Kp 0.0 2026-04-07

Updated every 3 hours from NOAA SWPC.