RSSGB2RS Propagation News

Propagation News – 17 March 2024

| March 15, 2024

What a difference a month makes. We’ve gone from a solar flux index up to almost 200, to one that is down in the 120s. Over the past week, we have had only two M-class solar flares, which means we have had limited coronal mass ejection activity and therefore low Kp indices. Last weekend’s Commonwealth […]

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Propagation News – 10 March 2024

| March 8, 2024

As predicted, a coronal mass ejection, or CME for short, affected the ionosphere last weekend, the 2 and 3 of March, pushing maximum usable frequencies down and sparking auroral displays that were visible as far south as Cornwall. The plasma hit the Earth around midday on Sunday the 3 March, eventually pushing the Kp index […]

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Propagation News – 3 March 2024

| March 1, 2024

Active region 3590, which was the large sunspot group that threatened us with solar flares and coronal mass ejections, or CMEs, has now moved to the Sun’s limb and is no longer a threat. Region 3590 was potentially dangerous, but ultimately wasn’t too bad. Yes, we had flares, but they were only minor C-class and […]

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Propagation News – 25 February 2024

| February 23, 2024

We’ve had two X-class solar flares over the past few days. The first occurred at 2307UTC on 21 February, so didn’t affect the UK at all. The second erupted at 0632UTC on 22 February and was too early to affect the ionosphere in this region. However, HF paths to the east may have been affected. […]

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Propagation News – 18 February 2024

| February 16, 2024

We had an interesting week with the threat of a major coronal mass ejection at any time with so much sunspot activity. In the end, it pretty much amounted to nothing, with the highest Kp index only reaching 4.33 on 11 February. That’s not to say we didn’t have solar activity. Far from it, as […]

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Propagation News – 11 February 2024

| February 9, 2024

A large sunspot region has been turning into an Earth-facing position and now looks like it could be threatening. Active region 3576 has already emitted a couple of low-class solar flares but could be poised for even more. An M5.1 solar flare was detected around region 3575 on the 7 February as well. Updated imagery […]

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