Solar Watch — August 28, 2026 | 18:00 UTC

☀ Helios Solar Watch · 2026-08-28 16:00 UTC
QUIET

Geomagnetic activity is escalating as the planetary K-index rises toward G2-level storming. Current conditions indicate an unsettled environment shifting into active status within the next few hours.

HMI Continuum Intensity

Visible light · 5 active regions

SUVI 304 — Extreme UV

Extreme UV · 304 Å

Kp Index
3.7
5 or above = storm

Geomagnetic
G0
24 h max: G2

X-Ray
A/B
quiet


⚠ Kp 4 reached · 4 more below
Next 24 h

Geomagnetic activity is expected to reach G2 (Kp 5.67) levels by late evening UTC on August 28 and persist into the early hours of August 29. Conditions should begin to stabilize thereafter, though minor fluctuations remain possible.

🌌 Aurora

Observers at mid-latitudes (40-60°N) should prepare for potential aurora visibility during the peak of the G2 storm tonight.

more

Clear, dark skies away from city light pollution provide the best opportunity for viewing as the geomagnetic field reacts to incoming solar wind.

👁 Watch for

Monitor the Kp-index closely through 00:00 UTC on August 29 to confirm the intensity of the G2 storm and verify the peak timing for aurora activity.

▸ Detailed readings

Radio blackout
 R0
(24 h max R0)
Radiation
 S0
(24 h max S0)
F10.7
 111.0
sfu

Region Location Class Flares C/M/X
AR4513 N04W43 Dai/BG 1/0/0
AR4515 S07W29 Hsx/A 0/0/0
AR4517 N09W58 Eso/B 0/0/0
AR4519 N27E25 Axx/A 0/0/0
AR4518 N08E19 Cro/B 0/0/0
NOAA messages
2026-08-28 15:02  Kp 4 reached (ALTK04)
2026-08-28 14:11  Kp 4 expected (WARK04)
2026-08-27 09:34  Electron flux F3 reached (ALTEF3)
2026-08-26 16:36  Kp 30 possible (WATA30)
2026-08-26 06:58  ALTTP2 (ALTTP2)


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