GB2RS Propagation News
Propagation News – 1 November 2020
Last week saw more evidence that Solar Cycle 25 is definitely under way. Large sunspot group 2778 caused the solar flux index to rise to 82. And it then got even better when it was joined by active region 2779, which pushed the SFI up further to 88 on Thursday. This is the first time […]
Propagation News – 25 October 2020
The last week was dominated by sunspot region 2776, which pushed the solar flux index to 75. Geomagnetically, it was a mixed bag though, with the Kp index peaking at four on Wednesday, but otherwise being relatively quiet and showing zero on Tuesday. The sunspots, plus the October seasonal enhancement, meant that the HF bands […]
Propagation News – 18 October 2020
We had a little flurry of solar activity last week, but it didn’t amount to much. Region 2775 decayed to a spotless plage and didn’t contribute at all after Tuesday, the 13th. A new region began forming while on the far side of the Sun and has turned into view off the east limb. The […]
Propagation News – 11 October 2020
We had another week without a single sunspot appearing on the solar surface. The only upside was that the solar wind was largely calm, which resulted in a settled ionosphere. The solar flux index remained pegged at 71 or 72, reminding us that although NASA says that Solar Cycle 25 has started, we are still […]
Propagation News – 4 October 2020
We had yet another week with zero sunspots and poor conditions. Matter from a solar coronal hole pushed the Kp index to six late on Sunday, the 27th, with corresponding detrimental effects on the ionosphere. The solar wind stream climbed to above 600km/s with the Bz component of the interplanetary magnetic field periodically pointing south. […]
Propagation News – 27 September 2020
We finally broke our long-running record of zero sunspots last week thanks to active region 2773. This new Solar Cycle 25 spot appeared over the Sun’s limb and pushed the solar flux index to 73. The end of the week also saw unsettled conditions due to a high-speed stream from a coronal hole. The hole […]
