Solar Watch — August 13, 2026 | 18:00 UTC

☀ Helios Solar Watch · 2026-08-13 16:00 UTC
QUIET

Geomagnetic activity remains at quiet levels despite a robust solar radio flux of 183 sfu. The sun is currently stable with no significant flare activity impacting Earth’s magnetosphere.

HMI Continuum Intensity

Visible light · 6 active regions

SUVI 304 — Extreme UV

Extreme UV · 304 Å

Kp Index
1.3
5 or above = storm

Geomagnetic
G0
24 h max: G0

X-Ray
A/B
quiet


⚠ Kp 20 possible · 4 more below
Next 24 h

Expect a slight increase in geomagnetic agitation over the next 24 hours, with the Kp index projected to climb to 3.67. These unsettled conditions remain well below storm thresholds and should not cause operational interference.

🌌 Aurora

Aurora visibility is not expected at mid-latitudes.

more

Observers in high-latitude regions may see minor, localized activity as the Kp index approaches 3-4, but no widespread displays are anticipated.

👁 Watch for

Monitor AR4507 and AR4508 as they rotate toward the central meridian for any sudden increase in magnetic complexity that could trigger C-class or M-class solar flares.

▸ Detailed readings

Radio blackout
 R0
(24 h max R0)
Radiation
 S0
(24 h max S0)
F10.7
 183.0
sfu

Region Location Class Flares C/M/X
AR4507 N04E15 Dso/BG 0/0/0
AR4510 N12W14 Bxo/B 0/0/0
AR4503 S17W53 Cao/B 0/0/0
AR4509 N11W61 Dao/B 0/0/0
AR4506 N12W03 Bxo/B 0/0/0
AR4508 N07E43 Hax/A 0/0/0
NOAA messages
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)
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