Author: sitemill

  • Solar Watch — July 17, 2026 | 18:00 UTC

    ☀ HELIOS SOLAR WATCH · 2026-07-17 16:00 UTC
    Solar activity remains stable and quiet with F10.7 flux at 140 sfu
    SOLAR: QUIET
    GEO: QUIET

    Active Regions
    3
    X-Ray
    A/B (quiet)

    Geomagnetic conditions are currently quiet with a planetary K-index of 1.3. Solar activity is stable, reflecting a typical background state for the current cycle.

    HMI Continuum Intensity

    HMI Continuum · Visible Light

    SUVI 304 — Extreme UV

    SUVI 304Å · Extreme Ultraviolet

    R0
    Radio Blackouts
    24h max: R0

    S0
    Solar Radiation
    24h max: S0

    G0
    Geomagnetic Storm
    24h max: G0

    Planetary Kp-Index
    1.3
    0–9 scale · ≥5 = geomagnetic storm

    F10.7 Solar Flux
    140.0
    sfu · >150 = high activity

    The Earth’s magnetic field is undisturbed, with the Kp-index holding steady between 0.7 and 1.3 over the last 24 hours. Solar X-ray flux is at background A/B levels, indicating no significant eruptive activity from the six active regions currently on the Earth-facing disk. The F10.7 radio flux of 140 sfu confirms a moderate level of solar disk activity, well within expected nominal ranges.

    Key Metric

    The current Kp-index of 1.3 confirms a stable magnetosphere, meaning no immediate impacts for satellite operators or power grid stability.

    Conditions are expected to remain quiet for the next 24 hours, with the Kp-index unlikely to exceed 2.33. No significant geomagnetic disturbances or solar radiation storms are anticipated during this period.

    🌌 Aurora Outlook

    Aurora visibility remains restricted to high polar latitudes. There is no expected impact for mid-latitude observers at this time.

    Region Location Class Flares C/M/X
    AR4489 S08E17 Cso/B 0/0/0
    AR4491 S11E50 Hax/A 0/0/0
    AR4490 N15E03 Bxo/B 0/0/0
    2026-07-15 08:53:19.650Space Weather Message Code: WARK04
    2026-07-15 05:58:03.170Space Weather Message Code: ALTK04
    2026-07-15 05:54:15.747Space Weather Message Code: WARK04
    2026-07-15 01:44:29.693Space Weather Message Code: WARK04
    2026-07-14 00:08:27.203Space Weather Message Code: ALTK04

    Monitor the development of Active Region AR4491 as it rotates toward the solar limb, as its complexity may influence flare probability.