Solar Watch — April 28, 2026 | 06:00 UTC

☀ HELIOS SOLAR WATCH · 2026-04-28 04:00 UTC
Quiet geomagnetic conditions persist with moderate solar flare probability.
SOLAR: UNSETTLED
GEO: QUIET

Active Regions
6
X-Ray
A/B (quiet)

Solar activity remains in a quiet state with geomagnetic indices well below storm thresholds. While the environment is currently stable, AR4425 remains a region of interest due to its potential for moderate flare activity.

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
0.7
0–9 scale · ≥5 = geomagnetic storm

F10.7 Solar Flux
113.0
sfu · >150 = high activity

The geomagnetic field is quiet with a Kp-index of 0.7, reflecting a lack of significant solar wind disturbances. The F10.7 solar radio flux is at 113 sfu, indicating moderate levels of solar activity. Six active regions are currently visible on the solar disk, with AR4425 producing isolated C-class and M-class flare activity.

Key Metric

The 55% probability of M-class solar flares is the most significant metric, as it indicates a lingering potential for temporary radio signal degradation on the sunlit side of Earth.

Geomagnetic conditions are expected to remain at quiet levels throughout the next 24 hours. The probability of C-class flares remains high, with a 55% chance of further M-class eruptions from existing active regions.

🌌 Aurora Outlook

Aurora visibility is not expected at mid-latitudes (40-60°N). High-latitude observers may see only baseline background activity; no geomagnetic storming is currently forecast.

Region Location Class Flares C/M/X
AR4420 N16W29 Fkc/BGD 10/0/0
AR4421 S12W17 Hax/A 0/0/0
AR4423 S05W10 Cso/B 0/0/0
AR4424 N16E06 Dso/B 0/0/0
AR4425 N05E36 Ekc/BGD 5/1/0
AR4427 S31E40 Axx/A 0/0/0
2026-04-27 01:06:25.970Space Weather Message Code: ALTTP2
2026-04-26 23:33:07.687Space Weather Message Code: WARK04
2026-04-26 23:17:50.840Space Weather Message Code: SUMXM5
2026-04-26 23:08:38.813Space Weather Message Code: SUM10R
2026-04-26 23:00:55.950Space Weather Message Code: ALTXMF

Monitor AR4425 for structural evolution, as its magnetic configuration currently supports moderate flare potential despite the otherwise calm space weather environment.