Latest Helios Report

  • Solar Watch — September 18, 2026 | 06:00 UTC

    ☀ Helios Solar Watch · 2026-09-18 04:00 UTC
    QUIET

    Current solar conditions are quiet, with the planetary K-index holding at low levels following a period of minor geomagnetic unrest. No significant solar flares or space weather disturbances are currently impacting Earth.

    HMI Continuum Intensity

    Visible light · 1 active region

    SUVI 304 — Extreme UV

    Extreme UV · 304 Å

    Kp Index
    1.7
    5 or above = storm

    Geomagnetic
    G0
    24 h max: G0

    X-Ray
    A/B
    quiet


    ⚠ Kp 4 expected · 4 more below
    Next 24 h

    Geomagnetic conditions are expected to remain quiet over the next 24 hours, with Kp levels forecast to peak near 2.67.

    more

    Solar flare activity will likely remain dominated by frequent C-class events, with only a 30% probability of M-class activity.

    🌌 Aurora

    Aurora visibility is not expected for mid-latitudes, as geomagnetic activity is insufficient to push the auroral oval south of polar regions.

    more

    Observers at very high latitudes may see minor, localized auroral activity.

    👁 Watch for

    Monitor the development of the 25 active solar regions, as any unexpected magnetic complexity could rapidly increase the current 30% probability of M-class flares.

    ▸ Detailed readings

    Radio blackout
     R0
    (24 h max R0)
    Radiation
     S0
    (24 h max S0)
    F10.7
     94.0
    sfu

    Region Location Class Flares C/M/X
    AR4528 S11W83 Hsx/A 0/0/0
    NOAA messages
    2026-09-16 05:38  Kp 4 expected (WARK04)
    2026-09-16 00:34  Kp 4 reached (ALTK04)
    2026-09-15 18:56  Kp 5 (G1) expected (WARK05)
    2026-09-15 17:37  Kp 20 possible (WATA20)
    2026-09-14 11:03  Electron flux F3 reached (ALTEF3)


    Helios Observer · Data: NOAA SWPC · updated every 12 h