Solar Watch — June 29, 2026 | 18:00 UTC

☀ HELIOS SOLAR WATCH · 2026-06-29 16:00 UTC
Solar activity transitioning to unsettled; geomagnetic disturbance anticipated
SOLAR: MODERATE
GEO: QUIET

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

Solar activity is currently quiet, but conditions are expected to shift to active levels late in the day. A G1 (minor) geomagnetic storm is forecast to develop due to anticipated solar wind interactions.

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: G1

Planetary Kp-Index
1.0
0–9 scale · ≥5 = geomagnetic storm

F10.7 Solar Flux
105.0
sfu · >150 = high activity

The solar disk currently hosts eight active regions, with moderate C-class flare production observed. Geomagnetic conditions are stable with a Kp-index of 1.0. Solar radio flux remains at a moderate 105 sfu, indicating a baseline level of solar activity.

Key Metric

The forecast jump in Kp to 4.67 is the most critical metric as it signifies the onset of a minor geomagnetic disturbance which may influence satellite drag and high-latitude navigation.

Geomagnetic activity is expected to increase significantly after 21:00 UTC, reaching G1 levels (Kp 4.67). Radio communications are expected to remain unaffected by ionospheric absorption, though sensitive systems should monitor for minor fluctuations.

🌌 Aurora Outlook

At a Kp of 4.67, auroral displays are unlikely to be visible at mid-latitudes (40-60°N). Observers at high latitudes, such as in northern Canada or Scandinavia, may witness quiet auroral activity once the disturbance manifests.

Region Location Class Flares C/M/X
AR4476 N08W72 Axx/A 0/0/0
AR4475 S07W50 Dai/BG 1/0/0
AR4477 S13W14 Bxo/B 0/0/0
AR4478 S05E07 Fki/BGD 1/0/0
AR4479 N15W12 Eki/BGD 7/0/0
AR4480 S16W18 Dso/B 0/0/0
2026-06-29 05:02:33.583Space Weather Message Code: ALTEF3
2026-06-28 10:41:25.723Space Weather Message Code: WATA20
2026-06-28 05:07:19.223Space Weather Message Code: ALTEF3
2026-06-27 07:13:20.747Space Weather Message Code: ALTEF3
2026-06-26 14:06:14.680Space Weather Message Code: ALTEF3

Monitor the G1 geomagnetic threshold crossing after 21:00 UTC for potential enhancements in solar wind speed or density.