Solar Watch — August 19, 2026 | 06:00 UTC

☀ Helios Solar Watch · 2026-08-19 04:00 UTC
QUIET

Current solar conditions remain unsettled with Kp levels hovering near the G1 threshold. While flare activity is limited to C-class events, the elevated geomagnetic background necessitates continued monitoring.

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: G1

X-Ray
A/B
quiet


⚠ Kp 4 expected · 4 more below
Next 24 h

Geomagnetic activity is expected to fluctuate between unsettled and minor storm levels (Kp 4-4.67) over the next 24 hours.

more

No significant increase in X-ray flare intensity is anticipated, though persistent C-class activity remains highly probable.

🌌 Aurora

Aurora visibility for mid-latitudes (40-60°N) is unlikely at current levels, though observers at high latitudes may see periodic, faint activity during the predicted Kp 4 intervals.

👁 Watch for

Monitor the evolution of active region AR4507 as it nears the western limb; any unexpected magnetic complexity could trigger a sudden increase in flare output.

▸ 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
AR4510 N12W81 Dao/B 0/0/0
AR4507 N04W55 Ehi/BGD 2/0/0
AR4508 N08W23 Cao/B 0/0/0
AR4506 N12W72 Dao/B 1/0/0
NOAA messages
2026-08-18 20:52  Kp 4 expected (WARK04)
2026-08-18 20:45  Kp 5 (G1) reached (ALTK05)
2026-08-18 20:43  Kp 5 (G1) expected (WARK05)
2026-08-17 22:46  Kp 20 possible (WATA20)
2026-08-17 21:05  Kp 4 reached (ALTK04)


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