Solar Watch — April 27, 2026 | 18:00 UTC

Solar Flare Activity — Last 12 Hours
Peak: M-class @ 06:45 UTC (9h 15min ago)
  M @ 06:45 UTC

☀ HELIOS SOLAR WATCH · 2026-04-27 16:00 UTC
Solar activity remains stable with moderate flare potential from AR4425
SOLAR: UNSETTLED
GEO: QUIET

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

Geomagnetic conditions are currently quiet, with the planetary K-index remaining at low levels. While overall activity is stable, active region AR4425 continues to show potential for M-class solar flares.

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
1.7
0–9 scale · ≥5 = geomagnetic storm

F10.7 Solar Flux
112.0
sfu · >150 = high activity

The Earth’s magnetic field is currently undisturbed with a Kp-index of 1.7. Solar activity is characterized by a stable F10.7 flux of 112 sfu, indicating moderate background solar activity. Seven active regions are currently visible on the solar disk, with AR4425 emerging as the primary focus due to recent M-class flare activity.

Key Metric

The 50% probability of M-class flares from AR4425 is the most critical metric, as it represents the highest risk for sudden ionospheric disturbances.

Geomagnetic conditions are expected to remain at quiet levels, with the Kp-index projected to stay below 2.0 throughout the next 24 hours. The probability of further M-class flares remains at 50%, requiring continued monitoring of AR4425.

🌌 Aurora Outlook

Aurora visibility is not expected at mid-latitudes. Observers in high-latitude regions should expect standard, background-level aurora activity only.

Region Location Class Flares C/M/X
AR4420 N16W29 Fkc/BGD 7/0/0
AR4421 S12W17 Hax/A 0/0/0
AR4425 N05E36 Ekc/BGD 4/1/0
AR4424 N16E06 Dso/B 0/0/0
AR4423 S05W10 Cso/B 0/0/0
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 any signs of magnetic complexity growth, which would increase the likelihood of stronger X-ray bursts.