Solar Watch — June 17, 2026 | 18:00 UTC

☀ HELIOS SOLAR WATCH · 2026-06-17 16:00 UTC
Solar activity remains low with minor geomagnetic fluctuations expected
SOLAR: MODERATE
GEO: QUIET

Active Regions
3
X-Ray
A/B (quiet)

Solar activity is currently stable, characterized by low-level C-class flare production and quiet geomagnetic conditions. While no significant storms are anticipated, we expect a modest increase in geomagnetic unrest over the next 24 hours.

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
2.3
0–9 scale · ≥5 = geomagnetic storm

F10.7 Solar Flux
118.0
sfu · >150 = high activity

The sun is currently in a quiet state, with an F10.7 flux of 118.0 sfu indicating moderate solar radio output. There are six active regions on the solar disk, though none are currently manifesting significant magnetic complexity. Kp index levels remain low at 2.3, suggesting a stable magnetosphere with minimal current interaction from solar wind streams.

Key Metric

The predicted Kp of 3.67 is the most important metric as it marks a transition from quiet to unsettled conditions, though it remains below storm thresholds.

Geomagnetic conditions are expected to reach a minor level of unrest, peaking at Kp 3.67 during the next 24-hour window. This is a standard fluctuation rather than a storm, and no significant disruptions to radio communications or satellite operations are anticipated.

🌌 Aurora Outlook

Aurora visibility is not expected for mid-latitudes (40-60°N). Observers at very high latitudes may see minor activity, but the current solar wind environment does not support a southward excursion of the auroral oval.

Region Location Class Flares C/M/X
AR4470 N07E54 Dao/B 0/0/0
AR4469 S16W06 Bxo/B 1/0/0
AR4465 N07W49 Cso/B 1/0/0
2026-06-16 11:24:14.140Space Weather Message Code: ALTEF3
2026-06-15 12:35:56.833Space Weather Message Code: ALTEF3
2026-06-14 13:28:09.427Space Weather Message Code: ALTEF3
2026-06-14 08:30:13.163Space Weather Message Code: WATA30
2026-06-13 23:56:02.700Space Weather Message Code: WARK04

Monitor AR4470 as it rotates into a more geo-effective position, as its development could alter the 48-hour flare forecast.