Solar Watch — September 24, 2026 | 18:00 UTC

☀ Helios Solar Watch · 2026-09-24 16:00 UTC
QUIET

Geomagnetic conditions are currently unsettled with a Kp-index of 3.7. A brief period of G1-level disturbance is expected late in the 24-hour cycle as solar wind conditions evolve.

HMI Continuum Intensity

Visible light · 8 active regions

SUVI 304 — Extreme UV

Extreme UV · 304 Å

Kp Index
3.7
5 or above = storm

Geomagnetic
G0
24 h max: G1

X-Ray
A/B
quiet


⚠ Kp 4 expected · 3 more below
Next 24 h

Expect geomagnetic conditions to peak at a G1 (Minor) level around 21:00 UTC today before subsiding.

more

Flare probabilities remain skewed toward C-class events, though the 55% chance for M-class activity warrants continued monitoring of AR4536 and AR4538.

🌌 Aurora

Aurora visibility is restricted to high latitudes.

more

Observers in Scandinavia, Canada, and high-latitude US states may see faint displays during the peak window this evening, but mid-latitude sightings are unlikely.

👁 Watch for

Monitor the evolution of AR4536 and AR4538 for sudden magnetic complexity, as they currently represent the highest potential for M-class flare activity.

▸ Detailed readings

Radio blackout
 R0
(24 h max R0)
Radiation
 S0
(24 h max S0)
F10.7
 113.0
sfu

Region Location Class Flares C/M/X
AR4538 N11W49 Dsi/B 0/0/0
AR4533 S14E09 Hrx/A 0/0/0
AR4535 N12E21 Dso/B 0/0/0
AR4534 N11W61 Cao/B 0/0/0
AR4539 S09W01 Axx/A 0/0/0
AR4542 S18E22 Bxo/B 0/0/0
AR4536 N03W39 Dsi/B 1/0/0
AR4537 N07W53 Dao/B 0/0/0
NOAA messages
2026-09-24 14:30  Kp 4 expected (WARK04)
2026-09-24 09:52  Kp 4 reached (ALTK04)
2026-09-21 18:32  Kp 20 possible (WATA20)
2026-09-15 18:56  Kp 5 (G1) expected (WARK05)


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