☀ Helios Solar Watch · 2026-10-18 16:00 UTC
QUIET
Solar activity is currently minimal, with the planetary K-index holding at very low levels. The sun remains quiet, with no significant geomagnetic disturbances expected in the next 24 hours.
Visible light · 3 active regions
Extreme UV · 304 Å
Kp Index
0.3
5 or above = storm
Geomagnetic
G0
24 h max: G0
X-Ray
A/B
quiet
⚠ Kp 20 possible · 4 more below
Next 24 h
Expect calm space weather to persist through the next 24 hours. Geomagnetic conditions are forecast to remain at quiet levels, with Kp values likely staying below 2.5.
🌌 Aurora
Aurora visibility is not expected for mid-latitudes.
more
Observers at high latitudes may see minimal, baseline auroral activity, but conditions are not favorable for significant displays.
👁 Watch for
Monitor the evolution of AR4551 and AR4557 for any signs of magnetic complexity, as these regions remain the primary sources of potential 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
109.0
sfu
109.0
sfu
| Region | Location | Class | Flares C/M/X |
|---|---|---|---|
| AR4559 | S19W37 | Dro/B | 0/0/0 |
| AR4557 | N06W13 | Eac/BGD | 1/0/0 |
| AR4551 | S16W46 | Eki/BG | 2/0/0 |
NOAA messages
2026-10-17 20:14 Kp 20 possible (WATA20)
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 17:02 Kp 30 possible (WATA30)
Helios Observer · Data: NOAA SWPC · updated every 12 h