Latest Helios Report

  • Solar Watch — September 25, 2026 | 18:00 UTC

    ☀ Helios Solar Watch · 2026-09-25 16:00 UTC
    QUIET

    Geomagnetic activity remains in an unsettled state with Kp-levels fluctuating near 3.7. Solar activity is currently stable, with moderate flare probabilities and a steady F10.7 flux of 115 sfu.

    HMI Continuum Intensity

    Visible light · 8 active regions

    SUVI 304 — Extreme UV

    Extreme UV · 304 Å

    Kp Index
    3.7
    5 or above = storm

    Geomagnetic
    G0
    24 h max: G0

    X-Ray
    A/B
    quiet


    ⚠ Kp 5 (G1) expected · 3 more below
    Next 24 h

    Geomagnetic conditions are expected to remain unsettled, with Kp levels likely to oscillate between 3.0 and 4.0 over the next 24 hours.

    more

    No significant geomagnetic storms are anticipated, though there remains a persistent 45% probability of M-class solar flares given the configuration of current active regions.

    🌌 Aurora

    Aurora activity will be limited primarily to high-latitude regions.

    more

    Observers in northern Canada, Scandinavia, and high-latitude Alaska may see faint, quiet auroras, but significant displays are not expected at mid-latitudes (40-60°N).

    👁 Watch for

    Monitor the development of AR4536, which currently shows the most complex magnetic configuration and carries the highest potential for M-class flare activity.

    ▸ Detailed readings

    Radio blackout
     R0
    (24 h max R0)
    Radiation
     S0
    (24 h max S0)
    F10.7
     115.0
    sfu

    Region Location Class Flares C/M/X
    AR4534 N10W76 Bxi/B 0/0/0
    AR4538 N12W64 Cro/B 0/0/0
    AR4537 N07W68 Cai/B 0/0/0
    AR4539 S10W12 Hrx/A 0/0/0
    AR4533 S13W02 Bxo/B 0/0/0
    AR4542 S19E06 Axx/A 0/0/0
    AR4536 N03W53 Dac/BD 1/0/0
    AR4535 N12E09 Cro/B 0/0/0
    NOAA messages
    2026-09-25 08:35  Kp 5 (G1) expected (WARK05)
    2026-09-25 03:00  Kp 4 reached (ALTK04)
    2026-09-25 02:26  Kp 4 expected (WARK04)
    2026-09-21 18:32  Kp 20 possible (WATA20)


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