☀ Helios Solar Watch · 2026-09-20 16:00 UTC
QUIET
The Sun remains in a state of low activity with no significant geomagnetic disturbances expected. Current conditions are characterized by stable, quiet levels across all space weather metrics.
Visible light · 3 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
⚠ Kp 4 expected · 4 more below
Next 24 h
Geomagnetic conditions are expected to remain quiet over the next 24 hours, with Kp levels hovering between 1.0 and 1.67. No significant space weather events or disturbances are anticipated in the near term.
🌌 Aurora
Aurora activity is currently restricted to high latitudes.
more
Observers at mid-latitudes should not expect visibility at this time.
👁 Watch for
Monitor active region AR4533 as it rotates further onto the solar disk, as it is the most likely candidate for potential M-class flare production in the coming days.
▸ 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 |
|---|---|---|---|
| AR4533 | S14E64 | Cso/B | 0/0/0 |
| AR4532 | S05W54 | Axx/A | 0/0/0 |
| AR4534 | N11W09 | Bxo/B | 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