☀ Helios Solar Watch · 2026-09-09 04:00 UTC
QUIET
Solar activity is trending toward quiet levels as the recent geomagnetic disturbance dissipates. The planetary K-index is currently at 2.7 and is expected to continue decreasing throughout the day.
Visible light · 8 active regions
Extreme UV · 304 Å
Kp Index
2.7
5 or above = storm
Geomagnetic
G0
24 h max: G2
X-Ray
A/B
quiet
⚠ Kp 5 (G1) reached · 4 more below
Next 24 h
Geomagnetic conditions are expected to remain unsettled to quiet over the next 24 hours. The K-index will likely stabilize below 3.0, with no significant solar radiation or radio blackout events anticipated.
🌌 Aurora
Aurora visibility is currently low and confined to high-latitude regions.
more
Observers at mid-latitudes are unlikely to see significant activity tonight as the geomagnetic field returns to a quiet state.
👁 Watch for
Monitor the development of active regions 4521 and 4528 for any sudden growth in magnetic complexity that could trigger impulsive 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
211.0
sfu
211.0
sfu
| Region | Location | Class | Flares C/M/X |
|---|---|---|---|
| AR4528 | S11E38 | Hsx/A | 2/0/0 |
| AR4524 | N13W00 | Hsx/A | 0/0/0 |
| AR4529 | N12E37 | Hsx/A | 0/0/0 |
| AR4530 | N19E06 | Dao/B | 0/0/0 |
| AR4525 | N11E16 | Axx/A | 0/0/0 |
| AR4523 | N10W29 | Axx/A | 0/0/0 |
| AR4527 | N03E21 | Hsx/A | 0/0/0 |
| AR4521 | N09W40 | Hsx/A | 4/0/0 |
NOAA messages
2026-09-08 17:51 Kp 5 (G1) reached (ALTK05)
2026-09-08 17:30 Kp 4 expected (WARK04)
2026-09-08 17:27 Kp 5 (G1) expected (WARK05)
2026-09-08 17:02 Kp 30 possible (WATA30)
2026-09-08 16:08 Electron flux F3 reached (ALTEF3)
Helios Observer · Data: NOAA SWPC · updated every 12 h