☀ Helios Solar Watch · 2026-10-17 04:00 UTC
QUIET
Solar activity is currently stable, with the geomagnetic field remaining in a quiet state following minor unsettled periods yesterday. Flare activity is minimal, dominated by low-level C-class events.
Visible light · 3 active regions
Extreme UV · 304 Å
Kp Index
2.0
5 or above = storm
Geomagnetic
G0
24 h max: G0
X-Ray
A/B
quiet
⚠ Kp 4 reached · 4 more below
Next 24 h
Geomagnetic activity is expected to remain quiet for the next 24 hours, with the Kp-index likely hovering between 1.0 and 2.0.
more
No significant solar disturbances are expected, as flare probabilities for M-class and X-class events remain at 1%.
🌌 Aurora
Aurora activity is expected to be confined to high-latitude regions.
more
There is no significant opportunity for mid-latitude observers to witness auroral displays over the next 24 hours.
👁 Watch for
Monitor AR4551 for any signs of magnetic flux emergence, as it remains the primary source for potential minor solar flaring.
▸ 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
110.0
sfu
110.0
sfu
| Region | Location | Class | Flares C/M/X |
|---|---|---|---|
| AR4551 | S14W19 | Eki/BG | 8/1/0 |
| AR4555 | S08W70 | Cro/B | 0/0/0 |
| AR4557 | N07E16 | Dsi/B | 1/0/0 |
NOAA messages
2026-10-16 19:39 Kp 4 reached (ALTK04)
2026-10-16 19:38 Kp 4 expected (WARK04)
2026-10-16 14:19 Electron flux F3 reached (ALTEF3)
2026-10-11 19:11 Kp 20 possible (WATA20)
2026-10-11 17:02 Kp 30 possible (WATA30)
Helios Observer · Data: NOAA SWPC · updated every 12 h