GB2RS Propagation News
Propagation News – 7 April 2024
Looking at the Sun on Wednesday 3 April, you might be forgiven for thinking we are near sunspot minimum! With a near-total lack of sunspots and a solar flux index of 112, the solar disk was looking pretty bare. Compare that with just two weeks ago when the solar flux index was sitting at 209 […]
Propagation News – 31 March 2024
What a tumultuous time we had last week. Active region 3614 produced an X1.1 solar flare and coronal mass ejection, or CME, in the early hours of the 23 March. This impacted Earth’s geomagnetic field sending the Kp index to 8 on the 24 March. In fact, there were simultaneous flares from active region 3614 […]
Propagation News – 24 March 2024
As we said last week—what a difference a month makes. Only in this case, what a difference a week makes! On Friday, the 15th, the solar flux index, or SFI, was at 129 and the Sun did not look very spotty at all. This week it’s all changed. On Thursday, the 21st, the solar flux […]
Propagation News – 17 March 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 […]
Propagation News – 10 March 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 […]
Propagation News – 3 March 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 […]
