Solar Watch — June 16, 2026 | 18:00 UTC

☀ HELIOS SOLAR WATCH · 2026-06-16 16:00 UTC
Solar activity remains low; geomagnetic conditions expected to stay quiet.
SOLAR: QUIET
GEO: QUIET

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

Solar activity is currently at low levels with a quiet geomagnetic field. No significant space weather disturbances are present or expected in 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
2.0
0–9 scale · ≥5 = geomagnetic storm

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

The solar disk features six active regions, but they are relatively stable with minimal flare production. The current Kp index is at a nominal 2.0, reflecting stable conditions in Earth’s magnetosphere. Radio flux is measured at 122 sfu, indicating moderate solar cycle progression without anomalous intensity.

Key Metric

The current Kp index of 2.0 indicates a stable geomagnetic environment with no significant impact on satellite operations or power grids.

Expect geomagnetic conditions to remain in the G0 category, with the Kp index likely to fluctuate near 3.0 by late today. Flare activity will remain low, with a 90% probability of C-class flares but only a 40% chance of M-class activity.

🌌 Aurora Outlook

Aurora visibility is not expected at mid-latitudes. Observers in high-latitude regions may see minor activity, but there is no potential for sub-auroral displays at this time.

Region Location Class Flares C/M/X
AR4469 S16E07 Bxo/B 0/0/0
AR4468 N11E11 Bxo/B 0/0/0
AR4465 N08W37 Dai/BG 0/0/0
AR4464 S14W84 Hsx/A 0/0/0
AR4463 N17W81 Hsx/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 AR4465 for any sudden changes in magnetic complexity, as it remains the most developed region on the disk.