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