Solar Watch — June 19, 2026 | 06:00 UTC

☀ HELIOS SOLAR WATCH · 2026-06-19 04:00 UTC
Solar Activity Remains Unsettled with Moderate Geomagnetic Fluctuations
SOLAR: QUIET
GEO: QUIET

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

Solar activity is currently characterized by moderate geomagnetic conditions and a stable, quiet X-ray profile. While no significant storms are active, elevated planetary indices suggest ongoing minor coupling between solar wind streams and the magnetosphere.

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
3.0
0–9 scale · ≥5 = geomagnetic storm

F10.7 Solar Flux
122.0
sfu · >150 = high activity

The planetary K-index has risen to 3.0, reflecting a shift toward unsettled geomagnetic conditions. Solar flux (F10.7) holds steady at 122 sfu, indicating a moderate level of solar activity commensurate with current cycle expectations. The solar disk contains five active regions, though none are exhibiting complex magnetic configurations, resulting in a low probability of significant flare events.

Key Metric

The F10.7 index of 122 sfu is the primary metric to track, as it provides a reliable gauge of the overall solar ionizing radiation impacting the Earth’s upper atmosphere.

Geomagnetic activity is expected to peak at Kp 4.0 within the next few hours before subsiding to Kp 3.0 by midday. Expect continued stable conditions with minimal risk of radio blackouts or satellite interference, as solar flare probability remains largely contained to the C-class range.

🌌 Aurora Outlook

At a Kp of 3 to 4, auroral activity is confined to high latitudes. Observers in mid-latitudes (40-60°N) should not expect to see visible aurora during this period, as current geomagnetic forcing is insufficient to push the auroral oval toward lower latitudes.

Region Location Class Flares C/M/X
AR4471 N18W03 Dao/B 0/0/0
AR4470 N07E25 Dao/B 0/0/0
AR4465 N07W77 Cso/B 0/0/0
2026-06-18 15:07:21.583Space Weather Message Code: ALTEF3
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

Monitor the magnetic complexity of AR4471 and AR4470, as any rapid evolution in these regions could lead to an uptick in flare activity beyond current forecasts.