Author: sitemill

  • Solar Watch — May 19, 2026 | 06:00 UTC

    ☀ HELIOS SOLAR WATCH · 2026-05-19 04:00 UTC
    Solar activity remains low; brief geomagnetic disturbance subsiding.
    SOLAR: MODERATE
    GEO: QUIET

    Active Regions
    6
    X-Ray
    A/B (quiet)

    Current solar activity is quiet with low-level background flux and no significant flare events. A minor, transient geomagnetic disturbance is currently passing through the planetary field, with conditions expected to return to nominal levels by mid-day.

    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: G1

    Planetary Kp-Index
    1.7
    0–9 scale · ≥5 = geomagnetic storm

    F10.7 Solar Flux
    111.0
    sfu · >150 = high activity

    The solar disk remains relatively stable with six active regions, none of which exhibit complex magnetic configurations. F10.7 solar radio flux is holding steady at 111 sfu, consistent with moderate cycle activity. X-ray flux remains firmly in the background ‘A’ and ‘B’ class range, indicating no imminent threat of radio blackouts.

    Key Metric

    The Kp-index is the primary metric to monitor; it reflects the current geomagnetic stabilization after a short-lived disturbance.

    The geomagnetic field is transitioning from a brief period of minor instability back toward quiet conditions over the next 12 hours. We expect solar flare activity to remain low, with only a 45% probability of minor C-class events.

    🌌 Aurora Outlook

    Aurora visibility is not expected for mid-latitudes (40-60°N). While high-latitude regions may have seen brief, minor activity overnight, the geomagnetic field is rapidly stabilizing below storm thresholds.

    Region Location Class Flares C/M/X
    AR4440 N17E42 Hrx/A 0/0/0
    AR4436 N19W52 Hsx/A 1/0/0
    AR4439 N06E42 Dao/B 0/0/0
    AR4442 S15E28 Bxo/B 0/0/0
    AR4443 S16E47 Bxo/B 0/0/0
    AR4441 N08W01 Dao/B 0/0/0
    2026-05-18 05:00:25.433Space Weather Message Code: ALTEF3
    2026-05-17 21:16:07.547Space Weather Message Code: SUM10R
    2026-05-17 16:12:50.913Space Weather Message Code: WATA20
    2026-05-17 08:40:01.130Space Weather Message Code: WARK04
    2026-05-17 08:16:10.487Space Weather Message Code: ALTEF3

    Monitor the magnetic complexity of AR4440 and AR4439 as they rotate into a more geoeffective position over the coming days.