Solar Watch — September 27, 2026 | 06:00 UTC

☀ Helios Solar Watch · 2026-09-27 04:00 UTC
UNSETTLED

Geomagnetic activity is currently elevated at Kp 4 but is trending downward. The solar environment remains stable with no immediate threat of significant X-ray bursts or geomagnetic storms.

HMI Continuum Intensity

Visible light · 7 active regions

SUVI 304 — Extreme UV

Extreme UV · 304 Å

Kp Index
4.0
5 or above = storm

Geomagnetic
G0
24 h max: G0

X-Ray
A/B
quiet


⚠ Kp 4 reached · 4 more below
Next 24 h

Geomagnetic conditions are forecast to calm to quiet levels as the current disturbance passes. C-class flare activity remains possible due to the existing number of active regions, but the likelihood of M-class or X-class events is low.

🌌 Aurora

Aurora visibility is restricted to high-latitude regions.

more

Observers in mid-latitudes are unlikely to see displays, as the Kp index is forecast to fall below the threshold for mid-latitude visibility within the next few hours.

👁 Watch for

Monitor the development of AR4536, the most complex region currently on the disk, for any sudden changes in magnetic configuration.

▸ Detailed readings

Radio blackout
 R0
(24 h max R0)
Radiation
 S0
(24 h max S0)
F10.7
 124.0
sfu

Region Location Class Flares C/M/X
AR4537 N07W81 Axx/A 0/0/0
AR4533 S13W17 Bxo/B 0/0/0
AR4534 N10W90 Cro/B 2/0/0
AR4542 S19W07 Bxo/B 0/0/0
AR4535 N11W06 Cro/B 0/0/0
AR4538 N12W82 Axx/A 0/0/0
AR4536 N02W67 Dso/B 0/0/0
NOAA messages
2026-09-27 00:40  Kp 4 reached (ALTK04)
2026-09-27 00:35  Kp 4 expected (WARK04)
2026-09-26 15:51  Electron flux F3 reached (ALTEF3)
2026-09-25 08:35  Kp 5 (G1) expected (WARK05)
2026-09-21 18:32  Kp 20 possible (WATA20)


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