Author: sitemill

  • Solar Watch — August 20, 2026 | 06:00 UTC

    ☀ Helios Solar Watch · 2026-08-20 04:00 UTC
    QUIET

    The Sun is currently showing moderate activity levels with a primary focus on AR4513, which produced an M-class flare in the last 12 hours. Geomagnetic conditions remain in the unsettled range with no significant storm activity predicted at this time.

    ⚡ Flare activity — last 12 h
    Peak: M @ 18:51 UTC (9h 9min ago) · M @ 18:50 UTC
    HMI Continuum Intensity

    Visible light · 4 active regions

    SUVI 304 — Extreme UV

    Extreme UV · 304 Å

    Kp Index
    2.7
    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 unsettled over the next 24 hours, with Kp levels potentially peaking near 3.67 as minor disturbances pass.

    more

    Flare probability for M-class events remains elevated at 55%, primarily due to the magnetic complexity of AR4513.

    🌌 Aurora

    Aurora visibility is not expected at mid-latitudes (40-60°N).

    more

    Observers in high-latitude regions may see localized activity, but significant displays are unlikely given current planetary Kp levels.

    👁 Watch for

    Monitor the magnetic evolution of AR4513 as it nears the limb; any sudden changes in its magnetic structure could indicate an increased risk of further M-class or higher impulsive solar flares.

    ▸ Detailed readings

    Radio blackout
     R0
    (24 h max R0)
    Radiation
     S0
    (24 h max S0)
    F10.7
     107.0
    sfu

    Region Location Class Flares C/M/X
    AR4513 N03E81 Dao/B 2/1/0
    AR4507 N04W69 Ehi/BGD 8/0/0
    AR4508 N08W37 Cso/B 0/0/0
    AR4506 N12W86 Dao/B 1/0/0
    NOAA messages
    2026-08-19 17:57  Kp 4 expected (WARK04)
    2026-08-19 05:45  Kp 5 (G1) reached (ALTK05)
    2026-08-18 20:43  Kp 5 (G1) expected (WARK05)
    2026-08-17 22:46  Kp 20 possible (WATA20)
    2026-08-17 21:05  Kp 4 reached (ALTK04)


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