☀ Helios Solar Watch · 2026-09-30 04:00 UTC
QUIET
The solar environment is currently calm, characterized by low geomagnetic activity and a steady solar radio flux. Conditions are nominal for satellite operations and radio communications with no immediate space weather threats to Earth.
Visible light · 2 active regions
Extreme UV · 304 Å
Kp Index
1.0
5 or above = storm
Geomagnetic
G0
24 h max: G0
X-Ray
A/B
quiet
⚠ ALTTP4 · 4 more below
Next 24 h
Geomagnetic conditions are expected to remain at Kp 1-2 through the next 24 hours. No significant solar flares or energetic particle events are anticipated, ensuring stable conditions for global infrastructure.
🌌 Aurora
Aurora visibility is restricted to high polar latitudes.
more
There is no expected activity for mid-latitude observers at this time.
👁 Watch for
Monitor active region AR4535 for any sudden magnetic complexity, as the 65% probability of C-class flaring suggests continued potential for low-level eruptive 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
126.0
sfu
126.0
sfu
| Region | Location | Class | Flares C/M/X |
|---|---|---|---|
| AR4535 | N11W46 | Cso/BG | 0/0/0 |
| AR4544 | S09W15 | Cso/B | 0/0/0 |
NOAA messages
2026-09-30 03:39 ALTTP4 (ALTTP4)
2026-09-30 03:38 ALTTP2 (ALTTP2)
2026-09-29 13:01 Kp 20 possible (WATA20)
2026-09-29 05:02 Electron flux F3 reached (ALTEF3)
2026-09-27 00:40 Kp 4 reached (ALTK04)
Helios Observer · Data: NOAA SWPC · updated every 12 h