Solar Watch — June 16, 2026 | 06:00 UTC

☀ HELIOS SOLAR WATCH · 2026-06-16 04:00 UTC
Solar activity remains at moderate levels with quiet geomagnetic conditions.
SOLAR: MODERATE
GEO: QUIET

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

Current solar activity is characterized by a moderate F10.7 flux of 122 sfu and stable, quiet geomagnetic conditions. While minor fluctuations in the K-index are expected today, no significant storming is currently underway.

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 Sun is currently in a state of low-to-moderate activity with five active regions observed across the disk. X-ray flux remains quiet, dominated by low-level C-class flare potential. The planetary K-index is holding steady at 2.0, indicating a tranquil magnetosphere.

Key Metric

The F10.7 radio flux at 122 sfu is the key indicator, reflecting a moderate level of solar activity that supports stable radio propagation for satellite and high-frequency communication operators.

Geomagnetic activity is expected to trend briefly toward unsettled levels with a peak Kp of 3.67 occurring within the next few hours. Conditions will settle back to quiet levels by the latter half of the 24-hour period.

🌌 Aurora Outlook

Aurora visibility is not expected at mid-latitudes. Observers in high-latitude regions may see minimal, quiet-time auroral activity consistent with a Kp of 3-4.

Region Location Class Flares C/M/X
AR4469 S16E20 Bxo/B 0/0/0
AR4463 N17W68 Hsx/A 0/0/0
AR4464 S14W70 Hsx/A 1/0/0
AR4465 N08W24 Dai/BG 1/0/0
AR4468 N11E25 Bxo/B 0/0/0
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
2026-06-13 21:01:31.343Space Weather Message Code: ALTK04

Monitor the M-class flare probability, which stands at 40%, for any sudden, impulsive energetic events from the current active regions.