Solar Watch — August 17, 2026 | 18:00 UTC

☀ Helios Solar Watch · 2026-08-17 16:00 UTC
QUIET

The Sun remains in a stable, quiet state with geomagnetic activity holding well below storm thresholds. Solar activity levels are moderate, characterized by occasional low-level C-class flares.

HMI Continuum Intensity

Visible light · 4 active regions

SUVI 304 — Extreme UV

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

Expect geomagnetic conditions to remain quiet to unsettled, with the Kp-index hovering near 3.0 through the next 24 hours. No significant solar radiation storms or radio blackouts are anticipated as solar flare probabilities remain low.

🌌 Aurora

Aurora visibility for mid-latitudes is not expected.

more

Observers at high latitudes (above 60°N) may experience very faint or isolated auroral displays, but conditions are generally unfavorable for widespread activity.

👁 Watch for

Monitor AR4507 and AR4510 as they rotate toward the solar limb for any sudden structural changes or magnetic reconnection events.

▸ Detailed readings

Radio blackout
 R0
(24 h max R0)
Radiation
 S0
(24 h max S0)
F10.7
 114.0
sfu

Region Location Class Flares C/M/X
AR4506 N12W60 Dso/B 0/0/0
AR4508 N07W12 Cso/B 0/0/0
AR4507 N04W44 Eai/BG 1/0/0
AR4510 N13W73 Hsx/A 1/0/0
NOAA messages
2026-08-14 10:54  Kp 4 expected (WARK04)
2026-08-14 07:15  ALTTP2 (ALTTP2)
2026-08-11 20:55  Kp 20 possible (WATA20)
2026-08-11 11:41  Proton flux UD summary (SUMSUD)
2026-08-11 10:47  Proton flux UD expected (WARSUD)


Helios Observer · Data: NOAA SWPC · updated every 12 h