Solar Watch — June 28, 2026 | 06:00 UTC

☀ HELIOS SOLAR WATCH · 2026-06-28 04:00 UTC
Solar activity remains low with minor geomagnetic fluctuations expected
SOLAR: QUIET
GEO: QUIET

Active Regions
0
X-Ray
A/B (quiet)

The Sun remains in a stable, quiet state with minimal flare activity. We anticipate a minor, brief increase in geomagnetic unrest through the morning hours before returning to quiet conditions.

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
2.0
0–9 scale · ≥5 = geomagnetic storm

F10.7 Solar Flux
104.0
sfu · >150 = high activity

The current solar environment is characterized by nine active regions and an F10.7 flux of 104 sfu, indicating moderate but steady solar activity. X-ray flux remains at background levels following a minor C-class flare observation, and the planetary K-index is currently holding at a stable 2.0.

Key Metric

The Kp-index peak of 3.67 serves as the primary indicator, as it represents the threshold where minor magnetic fluctuations may affect sensitive power grid operations or satellite tracking.

Expect the Kp-index to rise slightly to 3.67 through the morning of June 28, representing unsettled conditions. By midday, solar-terrestrial interaction is expected to stabilize, with conditions returning to quiet levels by the afternoon.

🌌 Aurora Outlook

Aurora visibility is not expected at mid-latitudes. The current solar conditions are insufficient to push the auroral oval south of high-latitude regions.

2026-06-27 07:13:20.747Space Weather Message Code: ALTEF3
2026-06-26 14:06:14.680Space Weather Message Code: ALTEF3
2026-06-25 23:43:25.917Space Weather Message Code: WARK04
2026-06-25 19:41:10.373Space Weather Message Code: ALTK04
2026-06-25 19:39:22.820Space Weather Message Code: WARK04

Monitor the evolution of the nine active solar regions for any sudden increase in magnetic complexity that could trigger an M-class flare.