Solar Watch — June 25, 2026 | 18:00 UTC

☀ HELIOS SOLAR WATCH · 2026-06-25 16:00 UTC
Solar activity remains unsettled with moderate flare potential
SOLAR: MODERATE
GEO: UNSETTLED

Active Regions
7
X-Ray
A/B (quiet)

Geomagnetic conditions are currently unsettled with a Kp-index of 4.0, though expected to remain below storm thresholds. Solar activity is characterized by a high probability of C-class flares as nine active regions traverse the solar disk.

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: G0

Planetary Kp-Index
4.0
0–9 scale · ≥5 = geomagnetic storm

F10.7 Solar Flux
102.0
sfu · >150 = high activity

The current planetary K-index is 4.0, representing a minor increase in geomagnetic unrest compared to previous days. With an F10.7 flux of 102.0 sfu, solar output is in the moderate range. While nine active regions are present, x-ray flux remains quiet, with only minor C-class activity observed in the last 12 hours.

Key Metric

The Kp-index of 4.0 is the most critical metric as it indicates the current level of geomagnetic instability affecting ionospheric conditions.

Geomagnetic activity is expected to trend toward lower levels, with Kp values projected to fluctuate between 1.5 and 3.5 over the next 24 hours. No significant geomagnetic storms are anticipated, and the environment will likely remain at G0 levels.

🌌 Aurora Outlook

Aurora visibility is restricted to high latitudes. Observers at 40-60°N are unlikely to see activity unless a sudden, unforecasted uptick in the interplanetary magnetic field occurs.

Region Location Class Flares C/M/X
AR4470 N07W52 Bxo/B 0/0/0
AR4473 S09W00 Axx/A 0/0/0
AR4475 S10E12 Cki/BG 1/0/0
AR4476 N08W16 Dro/B 0/0/0
AR4477 S13E40 Bxi/B 1/0/0
AR4478 S06E63 Fkc/BGD 3/0/0
AR4479 N15E47 Axx/A 0/0/0
2026-06-25 08:47:36.793Space Weather Message Code: WARK05
2026-06-25 08:46:57.400Space Weather Message Code: WARK04
2026-06-25 03:56:40.657Space Weather Message Code: ALTK05
2026-06-25 03:41:32.400Space Weather Message Code: WARK05
2026-06-25 03:38:02.530Space Weather Message Code: WARK05

Monitor AR4478, which is currently the most complex region on the disk, for potential M-class flare development.