Solar Watch — June 20, 2026 | 06:00 UTC

Solar Flare Activity — Last 12 Hours
Peak: M-class @ 01:51 UTC (2h 9min ago)
  M @ 01:46 UTC

☀ HELIOS SOLAR WATCH · 2026-06-20 04:00 UTC
Solar Activity Remains Moderate Following Recent M-Class Flare
SOLAR: MODERATE
GEO: QUIET

Active Regions
4
X-Ray
A/B (quiet)

Solar activity is currently characterized by moderate background levels following a recent M-class flare. Geomagnetic conditions remain quiet, with only minor, short-lived fluctuations in the Kp index expected.

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
2.7
0–9 scale · ≥5 = geomagnetic storm

F10.7 Solar Flux
126.0
sfu · >150 = high activity

The solar disk currently hosts several active regions, with AR4470 and AR4472 being the primary points of interest. An M-class flare occurred within the last two hours, but overall X-ray flux is returning to baseline levels. The F10.7 solar radio flux stands at 126 sfu, indicating moderate solar activity.

Key Metric

The F10.7 radio flux of 126 sfu is the most important metric, as it confirms the Sun is in a period of moderate activity capable of producing periodic M-class flares.

Geomagnetic conditions are expected to remain unsettled but quiet over the next 24 hours, with Kp levels peaking near 3.67 before subsiding. No significant geomagnetic storms are currently anticipated.

🌌 Aurora Outlook

Aurora visibility is not expected for mid-latitudes (40-60°N) at this time. Observers at high polar latitudes may see minor activity, but there is no currently forecasted driver for widespread mid-latitude displays.

Region Location Class Flares C/M/X
AR4472 S13E68 Hax/A 0/0/0
AR4471 N18W02 Cro/B 0/0/0
AR4470 N06E28 Dao/B 1/0/0
AR4465 N07W76 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 evolution of AR4470 as it rotates further onto the disk, as its complex structure may present a renewed risk for further M-class eruptive activity.