Solar Watch — June 17, 2026 | 06:00 UTC

☀ HELIOS SOLAR WATCH · 2026-06-17 04:00 UTC
Solar Activity Remains Stable with Low Geomagnetic Disturbance
SOLAR: MODERATE
GEO: QUIET

Active Regions
5
X-Ray
A/B (quiet)

Current solar conditions are quiet with the planetary K-index remaining below storm thresholds. Solar activity is characterized by a moderate F10.7 radio flux and minimal flare production.

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
1.7
0–9 scale · ≥5 = geomagnetic storm

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

The geomagnetic environment is stable, with the Kp index currently at 1.7. Solar activity is dominated by five active regions, although they are producing only minor, infrequent C-class flares. The F10.7 solar radio flux is steady at 118 sfu, consistent with moderate, non-threatening solar cycle progression.

Key Metric

The current Kp index of 1.7 confirms a quiet geomagnetic environment with no immediate impact on satellite operations or power grids.

Geomagnetic conditions are expected to remain quiet over the next 24 hours, with the Kp index trending downward toward 1.3. No significant solar radiation storms or radio blackouts are anticipated, though minor C-class flaring remains likely.

🌌 Aurora Outlook

Aurora visibility is not expected at mid-latitudes. The current low Kp levels limit any auroral activity to the immediate polar regions, providing no meaningful opportunities for observers in the 40-60°N range.

Region Location Class Flares C/M/X
AR4470 N07E68 Dro/B 1/0/0
AR4469 S16E08 Bxi/B 0/0/0
AR4465 N07W35 Dai/B 0/0/0
AR4464 S14W86 Hsx/A 1/0/0
AR4463 N17W81 Hrx/A 0/0/0
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 the development of AR4470 as it rotates toward the solar limb, as its complexity may influence flare probabilities in the coming 48 hours.