Latest Helios Report

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

    ☀ Helios Solar Watch · 2026-09-18 16:00 UTC
    QUIET

    Solar activity is currently stable and quiet, with geomagnetic conditions well below storm thresholds. Three active regions are present on the solar disk, but flare production remains minimal.

    HMI Continuum Intensity

    Visible light · 0 active regions

    SUVI 304 — Extreme UV

    Extreme UV · 304 Å

    Kp Index
    0.7
    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 for the next 24 hours, with a slight, temporary increase to Kp 3 possible around 21:00 UTC today.

    more

    No significant radio blackouts or solar radiation storms are anticipated given the current solar flux environment.

    🌌 Aurora

    Aurora visibility for mid-latitudes (40-60°N) is currently non-existent, as the geomagnetic field is not sufficiently disturbed to drive particle precipitation to lower latitudes.

    more

    Observers should not expect any activity tonight.

    👁 Watch for

    Monitor the evolution of the three currently visible active regions for any signs of magnetic complexity that could lead to an unexpected M-class solar flare.

    ▸ Detailed readings

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

    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