Solar Watch — May 31, 2026 | 18:00 UTC

☀ HELIOS SOLAR WATCH · 2026-05-31 16:00 UTC
Solar Activity Remains Moderate with Calm Geomagnetic Conditions
SOLAR: MODERATE
GEO: QUIET

Active Regions
9
X-Ray
A/B (quiet)

Solar activity is characterized by steady C-class flare production with the geomagnetic field remaining largely stable. While the sun remains active with multiple regions present, no significant geomagnetic storms are currently projected.

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
103.0
sfu · >150 = high activity

The sun is currently hosting 9 active regions, though solar flux levels remain moderate at 103 sfu. Geomagnetic conditions are quiet at Kp 2.7, reflecting a lack of major solar wind disturbances. Radio flux and x-ray output suggest a standard operational environment for satellite and communication systems.

Key Metric

The 45% probability of M-class flares is the primary metric to monitor, as this indicates a potential for localized radio interference on the sunlit side of Earth.

Expect geomagnetic conditions to rise slightly into the unsettled range, peaking at Kp 3.67 as we enter the next 24-hour cycle. Flare probability remains weighted toward C-class events, with a 45% chance of M-class activity originating from the more complex active regions.

🌌 Aurora Outlook

Aurora visibility for mid-latitudes (40-60°N) is unlikely at current and forecast activity levels. Observers at very high latitudes may see minor auroral activity, but conditions do not support mid-latitude displays.

Region Location Class Flares C/M/X
AR4457 S10W14 Cro/B 0/0/0
AR4456 N14E42 Bxo/B 0/0/0
AR4455 N15E24 Dho/B 2/0/0
AR4454 S15E06 Hrx/A 0/0/0
AR4452 N10W75 Dai/BG 2/0/0
AR4449 S09W30 Cso/B 3/0/0
AR4447 S17W69 Hsx/A 1/0/0
AR4446 S15W35 Cho/B 1/0/0
AR4444 S21W62 Hsx/A 0/0/0
2026-05-30 20:36:21.880Space Weather Message Code: ALTK04
2026-05-30 18:52:33.273Space Weather Message Code: WARK04
2026-05-29 19:52:21.683Space Weather Message Code: ALTK04
2026-05-29 19:32:57.610Space Weather Message Code: WARK04
2026-05-29 05:41:15.247Space Weather Message Code: WARK04

Monitor active region AR4452 for magnetic complexity (Dai/BG classification) which may increase the likelihood of moderate flare production.