☀ Helios Solar Watch · 2026-09-19 04:00 UTC
QUIET
Solar activity is currently low, with the planetary K-index at 2.3 and F10.7 flux holding steady at 94.0 sfu. Geomagnetic conditions are stable, and no significant solar storms are impacting Earth at this time.
Visible light · 0 active regions
Extreme UV · 304 Å
Kp Index
2.3
5 or above = storm
Geomagnetic
G0
24 h max: G0
X-Ray
A/B
quiet
⚠ Kp 4 expected · 4 more below
Next 24 h
Conditions are expected to remain quiet over the next 24 hours, with the K-index predicted to fluctuate between 1 and 2. No significant geomagnetic disturbances are forecasted for this period.
🌌 Aurora
Aurora activity will be limited to high-latitude regions near the poles.
more
There is no significant visibility expected for mid-latitude observers at 40-60°N.
👁 Watch for
Monitor the M-class flare probability of 40%, as sudden eruptive activity from the 25 active regions could shift conditions rapidly.
▸ 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
94.0
sfu
94.0
sfu
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