Solar Watch — May 19, 2026 | 06:00 UTC

☀ HELIOS SOLAR WATCH · 2026-05-19 04:00 UTC
Solar activity remains low; brief geomagnetic disturbance subsiding.
SOLAR: MODERATE
GEO: QUIET

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

Current solar activity is quiet with low-level background flux and no significant flare events. A minor, transient geomagnetic disturbance is currently passing through the planetary field, with conditions expected to return to nominal levels by mid-day.

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
1.7
0–9 scale · ≥5 = geomagnetic storm

F10.7 Solar Flux
111.0
sfu · >150 = high activity

The solar disk remains relatively stable with six active regions, none of which exhibit complex magnetic configurations. F10.7 solar radio flux is holding steady at 111 sfu, consistent with moderate cycle activity. X-ray flux remains firmly in the background ‘A’ and ‘B’ class range, indicating no imminent threat of radio blackouts.

Key Metric

The Kp-index is the primary metric to monitor; it reflects the current geomagnetic stabilization after a short-lived disturbance.

The geomagnetic field is transitioning from a brief period of minor instability back toward quiet conditions over the next 12 hours. We expect solar flare activity to remain low, with only a 45% probability of minor C-class events.

🌌 Aurora Outlook

Aurora visibility is not expected for mid-latitudes (40-60°N). While high-latitude regions may have seen brief, minor activity overnight, the geomagnetic field is rapidly stabilizing below storm thresholds.

Region Location Class Flares C/M/X
AR4440 N17E42 Hrx/A 0/0/0
AR4436 N19W52 Hsx/A 1/0/0
AR4439 N06E42 Dao/B 0/0/0
AR4442 S15E28 Bxo/B 0/0/0
AR4443 S16E47 Bxo/B 0/0/0
AR4441 N08W01 Dao/B 0/0/0
2026-05-18 05:00:25.433Space Weather Message Code: ALTEF3
2026-05-17 21:16:07.547Space Weather Message Code: SUM10R
2026-05-17 16:12:50.913Space Weather Message Code: WATA20
2026-05-17 08:40:01.130Space Weather Message Code: WARK04
2026-05-17 08:16:10.487Space Weather Message Code: ALTEF3

Monitor the magnetic complexity of AR4440 and AR4439 as they rotate into a more geoeffective position over the coming days.