We said last week that there were no coronal holes to worry about. Yet two days later a massive crack appeared on the Sun, stretching over one million kilometres. Luckily, this didn’t amount to much and it had little effect on HF propagation, but it does go to show that solar events can rapidly develop […]

Compiled by G0KYA, G3YLA and G4BAO on Thursday, 16 July 2026. Last week was characterised by a falling solar flux index. Over the past week it has gone from 116 to 100, but the good news is that we have only had one M-class solar flare in that time and a multitude of lesser C-class […]

Compiled by G0KYA, G3YLA and G4BAO on 9 July, 2026. We have had another week of mixed HF propagation. We started with a Kp index of 6.33 on Saturday, 4 July which was caused by a coronal mass ejection (CME). This caused a strong G3 geomagnetic storm and auroral conditions. A check on the bands […]

Compiled by G0KYA, G3YLA and G4BAO on 2 July, 2026 Last week we warned you about some large sunspots about to turn into view. It turns out that regions 4478 and 4479 were even bigger than we thought. The result was that the solar flux index climbed into the low 200s, but we also had […]