Solar Watch — April 28, 2026 | 18:00 UTC

Solar Flare Activity — Last 12 Hours
Peak: M-class @ 12:23 UTC (37 min ago)
  M @ 12:22 UTC

☀ HELIOS SOLAR WATCH · 2026-04-28 13:00 UTC
Solar activity elevated with moderate flare potential; geomagnetic field remains quiet.
SOLAR: MODERATE
GEO: QUIET

Active Regions
7
X-Ray
A/B (quiet)

Geomagnetic conditions are currently quiet, though solar flare potential remains elevated following an M-class event earlier today. Eight active regions are currently visible on the solar disk.

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 planetary K-index is stable at 0.7, reflecting a very quiet geomagnetic environment. Solar activity is characterized by a moderate F10.7 flux of 113.0 sfu and a recent M-class flare recorded at 12:22 UTC. This indicates that while the solar magnetic field is currently calm, the solar surface harbors enough complexity to warrant monitoring.

Key Metric

The 55% probability of M-class flares is the most important metric, as it suggests the potential for minor radio propagation disturbances on the sunlit side of Earth.

Expect geomagnetic conditions to remain quiet, with Kp levels peaking at approximately 2.0. Flare activity is likely to continue at the C-class level, with a 55% statistical probability of further M-class eruptions over the next 24 hours.

🌌 Aurora Outlook

Aurora visibility is not expected at mid-latitudes. Observers in high-latitude regions may see only faint, quiet-time auroral displays, as current solar wind conditions are not sufficient to drive significant geomagnetic activity.

Region Location Class Flares C/M/X
AR4423 S05W24 Axx/A 0/0/0
AR4425 N05E22 Ekc/BGD 1/0/0
AR4424 N16W08 Dso/B 0/0/0
AR4420 N16W43 Fkc/BGD 5/0/0
AR4427 S31E26 Axx/A 0/0/0
AR4428 S23E12 Cso/B 0/0/0
AR4421 S12W31 Hax/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 continued magnetic complexity, as its configuration suggests the highest potential for further eruptive activity in the coming 12-24 hours.