Latest Helios Report

  • Solar Watch — May 21, 2026 | 18:00 UTC

    ☀ HELIOS SOLAR WATCH · 2026-05-21 16:00 UTC
    Solar activity remains low with quiet geomagnetic conditions expected
    SOLAR: QUIET
    GEO: QUIET

    Active Regions
    5
    X-Ray
    A/B (quiet)

    Current solar activity is quiet with low geomagnetic disturbance levels. The Sun is currently in a state of relative stability despite the presence of several active regions.

    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
    2.0
    0–9 scale · ≥5 = geomagnetic storm

    F10.7 Solar Flux
    93.0
    sfu · >150 = high activity

    The planetary K-index is at 2.0, indicating a stable magnetosphere with no significant geomagnetic impacts. Solar radio flux remains below 100 sfu, suggesting a lower baseline of solar activity. While several active regions are present on the disk, overall X-ray flux is currently maintaining A/B class levels, indicating minimal flare activity.

    Key Metric

    The 55% probability of M-class flares is the primary metric to watch, as it suggests the potential for sudden solar radio interference if regional magnetic complexity increases.

    Expect geomagnetic conditions to remain quiet, with only minor, short-lived fluctuations expected. The Kp index is forecast to peak near 3.0 during the next 24 hours, which remains well within the quiet range.

    🌌 Aurora Outlook

    Aurora visibility is restricted to high latitudes. There is no significant expectation for mid-latitude auroral displays in the next 24 hours.

    Region Location Class Flares C/M/X
    AR4441 N08W45 Eai/BG 0/0/0
    AR4436 N18W90 Csi/B 0/0/0
    AR4439 N07W02 Hrx/A 0/0/0
    AR4444 S21E65 Hsx/A 0/0/0
    AR4443 S16E10 Axx/A 0/0/0
    2026-05-21 05:09:08.390Space Weather Message Code: ALTEF3
    2026-05-20 10:06:55.493Space Weather Message Code: ALTEF3
    2026-05-19 23:56:50.663Space Weather Message Code: WARK04
    2026-05-19 20:57:51.727Space Weather Message Code: WARK04
    2026-05-19 16:42:16.093Space Weather Message Code: WARK04

    Monitor active region AR4441 and AR4439 for any sudden evolution in magnetic complexity that could trigger a moderate M-class solar flare.