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  • Solar Watch — September 19, 2026 | 18:00 UTC

    ☀ Helios Solar Watch · 2026-09-19 16:00 UTC
    QUIET

    Current solar conditions are quiet, with a planetary K-index of 1.7 and F10.7 flux at 94 sfu. No significant space weather impacts are expected for Earth-based systems over the next 24 hours.

    HMI Continuum Intensity

    Visible light · 0 active regions

    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 activity is expected to remain in the quiet range, with the K-index holding steady between 1.0 and 2.0. No significant solar disturbances are anticipated, and the F10.7 flux will likely persist near current levels.

    🌌 Aurora

    Aurora visibility is restricted to the highest latitudes and remains unlikely for mid-latitudes (40-60°N).

    more

    Observers in northern polar regions may see faint, intermittent activity, but there is no forecast for a display at lower latitudes.

    👁 Watch for

    Monitor the development of the two visible active regions for any sudden increase in magnetic complexity that could raise the 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

    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