Solar Watch — June 18, 2026 | 06:00 UTC

☀ HELIOS SOLAR WATCH · 2026-06-18 04:00 UTC
Solar activity remains stable with quiet geomagnetic conditions
SOLAR: MODERATE
GEO: QUIET

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

Solar activity is currently low, with no significant geomagnetic disturbances observed or anticipated. The sun remains in a moderate state of activity with stable flux levels.

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
118.0
sfu · >150 = high activity

The planetary K-index is at a quiet level of 2.0, indicating stable geomagnetic conditions. Solar flux (F10.7) is measured at 118 sfu, reflecting moderate solar cycle activity, and current X-ray flux is limited to background A and B levels. With three identified active regions, activity is present but currently lacks the magnetic complexity required for significant flaring events.

Key Metric

The F10.7 solar flux of 118 sfu indicates the sun is maintaining moderate activity levels, providing a steady baseline for satellite drag and ionospheric conditions.

Geomagnetic conditions will remain at quiet levels, with the K-index expected to oscillate between 1.5 and 3.0 throughout the next 24 hours. No significant solar radiation storms or radio blackouts are forecast, as flare potential remains low at 20% for M-class events.

🌌 Aurora Outlook

Aurora visibility is not expected for mid-latitudes (40-60°N). Observers should anticipate standard, non-event conditions with activity largely confined to high-latitude polar regions.

Region Location Class Flares C/M/X
AR4470 N07E54 Dao/B 0/0/0
AR4469 S16W06 Bxo/B 0/0/0
AR4465 N07W49 Cso/B 2/0/0
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 and AR4470 for any sudden increases in magnetic complexity, which could raise the probability of M-class solar flares.