☀ Helios Solar Watch · 2026-09-28 04:00 UTC
QUIET
Solar activity is currently stable with the planetary K-index at 0.7, indicating a quiet geomagnetic environment. No significant flares or storms are expected in the near term.
Visible light · 4 active regions
Extreme UV · 304 Å
Kp Index
0.7
5 or above = storm
Geomagnetic
G0
24 h max: G0
X-Ray
A/B
quiet
⚠ Electron flux F3 reached · 3 more below
Next 24 h
Geomagnetic conditions are expected to remain quiet, with Kp indices hovering between 1.5 and 2.0. No significant solar transients or high-speed stream influences are projected to impact Earth through the next 24-hour cycle.
🌌 Aurora
Aurora visibility will be restricted to high-latitude regions near the poles.
more
Mid-latitude observers are unlikely to see significant activity under these quiet conditions.
👁 Watch for
Monitor AR4535 as it continues its transit, specifically watching for any sudden increase in magnetic complexity that could raise the probability of 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
126.0
sfu
126.0
sfu
| Region | Location | Class | Flares C/M/X |
|---|---|---|---|
| AR4535 | N11W19 | Dri/B | 2/0/0 |
| AR4542 | S19W21 | Bxo/B | 0/0/0 |
| AR4543 | S09W75 | Bxo/B | 0/0/0 |
| AR4536 | N02W81 | Cso/B | 2/0/0 |
NOAA messages
2026-09-27 05:02 Electron flux F3 reached (ALTEF3)
2026-09-27 00:40 Kp 4 reached (ALTK04)
2026-09-27 00:35 Kp 4 expected (WARK04)
2026-09-25 08:35 Kp 5 (G1) expected (WARK05)
Helios Observer · Data: NOAA SWPC · updated every 12 h