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

☀ HELIOS SOLAR WATCH · 2026-05-20 04:00 UTC
Solar activity subsiding as geomagnetic conditions return to quiet levels
SOLAR: MODERATE
GEO: QUIET

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

Solar activity is currently low with the planetary K-index settling back toward quiet levels. No significant geomagnetic or radiation storms are 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
3.0
0–9 scale · ≥5 = geomagnetic storm

F10.7 Solar Flux
98.0
sfu · >150 = high activity

The Sun remains in a quiet state, with X-ray flux measured at background levels. While five active regions are present on the solar disk, their magnetic complexity is minimal, resulting in only minor C-class flare production. F10.7 solar radio flux has dipped to 98.0 sfu, confirming a period of decreased solar output.

Key Metric

The F10.7 radio flux of 98.0 sfu indicates a return to lower levels of solar activity, reflecting a decline in overall solar cycle intensity at this time.

Geomagnetic conditions are expected to remain at Kp 2 or lower for the duration of the forecast period. Solar flare activity will likely remain restricted to isolated, low-level C-class events.

🌌 Aurora Outlook

Aurora visibility is not expected at mid-latitudes. Observers in high-latitude regions may see minimal, quiet-time auroral activity, but no organized storm structures are predicted.

Region Location Class Flares C/M/X
AR4436 N18W64 Cso/B 5/0/0
AR4441 N07W15 Dao/B 0/0/0
AR4440 N17E29 Hrx/A 0/0/0
AR4443 S16E37 Axx/A 0/0/0
AR4439 N06E30 Cao/B 0/0/0
2026-05-19 23:56:50.663Space Weather Message Code: WARK04
2026-05-19 20:57:51.727Space Weather Message Code: WARK04
2026-05-19 16:42:16.093Space Weather Message Code: WARK04
2026-05-19 08:55:28.143Space Weather Message Code: ALTK04
2026-05-19 07:03:03.623Space Weather Message Code: WARK04

Monitor the magnetic evolution of active region AR4436 as it rotates toward the solar limb, noting any sudden changes in sunspot complexity that could indicate latent flare potential.