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

☀ HELIOS SOLAR WATCH · 2026-07-17 16:00 UTC
Solar activity remains stable and quiet with F10.7 flux at 140 sfu
SOLAR: QUIET
GEO: QUIET

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

Geomagnetic conditions are currently quiet with a planetary K-index of 1.3. Solar activity is stable, reflecting a typical background state for the current cycle.

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
1.3
0–9 scale · ≥5 = geomagnetic storm

F10.7 Solar Flux
140.0
sfu · >150 = high activity

The Earth’s magnetic field is undisturbed, with the Kp-index holding steady between 0.7 and 1.3 over the last 24 hours. Solar X-ray flux is at background A/B levels, indicating no significant eruptive activity from the six active regions currently on the Earth-facing disk. The F10.7 radio flux of 140 sfu confirms a moderate level of solar disk activity, well within expected nominal ranges.

Key Metric

The current Kp-index of 1.3 confirms a stable magnetosphere, meaning no immediate impacts for satellite operators or power grid stability.

Conditions are expected to remain quiet for the next 24 hours, with the Kp-index unlikely to exceed 2.33. No significant geomagnetic disturbances or solar radiation storms are anticipated during this period.

🌌 Aurora Outlook

Aurora visibility remains restricted to high polar latitudes. There is no expected impact for mid-latitude observers at this time.

Region Location Class Flares C/M/X
AR4489 S08E17 Cso/B 0/0/0
AR4491 S11E50 Hax/A 0/0/0
AR4490 N15E03 Bxo/B 0/0/0
2026-07-15 08:53:19.650Space Weather Message Code: WARK04
2026-07-15 05:58:03.170Space Weather Message Code: ALTK04
2026-07-15 05:54:15.747Space Weather Message Code: WARK04
2026-07-15 01:44:29.693Space Weather Message Code: WARK04
2026-07-14 00:08:27.203Space Weather Message Code: ALTK04

Monitor the development of Active Region AR4491 as it rotates toward the solar limb, as its complexity may influence flare probability.