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

    ☀ Helios Solar Watch · 2026-08-19 04:00 UTC
    QUIET

    Current solar conditions remain unsettled with Kp levels hovering near the G1 threshold. While flare activity is limited to C-class events, the elevated geomagnetic background necessitates continued monitoring.

    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: G1

    X-Ray
    A/B
    quiet


    ⚠ Kp 4 expected · 4 more below
    Next 24 h

    Geomagnetic activity is expected to fluctuate between unsettled and minor storm levels (Kp 4-4.67) over the next 24 hours.

    more

    No significant increase in X-ray flare intensity is anticipated, though persistent C-class activity remains highly probable.

    🌌 Aurora

    Aurora visibility for mid-latitudes (40-60°N) is unlikely at current levels, though observers at high latitudes may see periodic, faint activity during the predicted Kp 4 intervals.

    👁 Watch for

    Monitor the evolution of active region AR4507 as it nears the western limb; any unexpected magnetic complexity could trigger a sudden increase in flare output.

    ▸ Detailed readings

    Radio blackout
     R0
    (24 h max R0)
    Radiation
     S0
    (24 h max S0)
    F10.7
     111.0
    sfu

    Region Location Class Flares C/M/X
    AR4510 N12W81 Dao/B 0/0/0
    AR4507 N04W55 Ehi/BGD 2/0/0
    AR4508 N08W23 Cao/B 0/0/0
    AR4506 N12W72 Dao/B 1/0/0
    NOAA messages
    2026-08-18 20:52  Kp 4 expected (WARK04)
    2026-08-18 20:45  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