☀ Helios Solar Watch · 2026-09-20 04:00 UTC
QUIET
Solar activity remains at baseline levels with minimal geomagnetic disturbance. The Sun is currently quiet, with no significant space weather impacts expected in the near term.
Visible light · 1 active region
Extreme UV · 304 Å
Kp Index
2.3
5 or above = storm
Geomagnetic
G0
24 h max: G0
X-Ray
A/B
quiet
⚠ Kp 4 expected · 4 more below
Next 24 h
Geomagnetic conditions are expected to remain quiet, with Kp indices forecasted to decline toward 1.0 throughout the next 24 hours.
more
Solar flare probability remains heavily skewed toward C-class events, with no immediate threat of significant radio blackouts.
🌌 Aurora
Aurora visibility is restricted to high-latitude polar regions.
more
Mid-latitude observers should not expect any significant aurora displays under current conditions.
👁 Watch for
Monitor the evolution of active region AR4532 as it rotates across the solar disk, as it is the primary region for potential M-class flare activity.
▸ Detailed readings
Radio blackout
R0
(24 h max R0)
R0
(24 h max R0)
Radiation
S0
(24 h max S0)
S0
(24 h max S0)
F10.7
96.0
sfu
96.0
sfu
| Region | Location | Class | Flares C/M/X |
|---|---|---|---|
| AR4532 | S06W39 | Axx/A | 0/0/0 |
NOAA messages
2026-09-16 05:38 Kp 4 expected (WARK04)
2026-09-16 00:34 Kp 4 reached (ALTK04)
2026-09-15 18:56 Kp 5 (G1) expected (WARK05)
2026-09-15 17:37 Kp 20 possible (WATA20)
2026-09-14 11:03 Electron flux F3 reached (ALTEF3)
Helios Observer · Data: NOAA SWPC · updated every 12 h