Solar Watch — August 11, 2026 | 18:00 UTC

☀ Helios Solar Watch · 2026-08-11 16:00 UTC
QUIET

Solar activity is currently quiet with the geomagnetic field transitioning to unsettled levels. Despite the lack of significant flare activity, the F10.7 solar radio flux remains at a high 201 sfu, indicating a robust active sun.

HMI Continuum Intensity

Visible light · 4 active regions

SUVI 304 — Extreme UV

Extreme UV · 304 Å

Kp Index
2.7
5 or above = storm

Geomagnetic
G0
24 h max: G0

X-Ray
A/B
quiet


⚠ Proton flux UD summary · 4 more below
Next 24 h

Expect a minor uptick in geomagnetic activity reaching Kp 3.67 later this evening, followed by a return to quiet conditions.

more

Solar flare probability remains moderate for C-class events, with little threat of significant M or X-class activity in the near term.

🌌 Aurora

Aurora visibility is not expected for mid-latitudes; observers in high-latitude regions may see minor activity as the K-index trends toward 3.67, but no significant displays are anticipated.

👁 Watch for

Monitor active region AR4503 for any sudden magnetic reconfiguration, which could increase the probability of C-class flare production in the coming 24 hours.

▸ Detailed readings

Radio blackout
 R0
(24 h max R0)
Radiation
 S0
(24 h max S0)
F10.7
 201.0
sfu

Region Location Class Flares C/M/X
AR4503 S18W27 Bxo/B 0/0/0
AR4507 N03E44 Bxo/B 0/0/0
AR4506 N10E27 Axx/A 0/0/0
AR4508 N07E66 Hsx/A 0/0/0
NOAA messages
2026-08-11 11:41  Proton flux UD summary (SUMSUD)
2026-08-11 10:47  Proton flux UD expected (WARSUD)
2026-08-09 13:38  Kp 20 possible (WATA20)
2026-08-08 21:08  Kp 6 (G2) reached (ALTK06)
2026-08-08 20:35  Kp 6 (G2) expected (WARK06)


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