GB2RS Propagation News
Propagation News – 29 October 2023
It was not a good week for the ionosphere with the Solar Flux Index, or SFI, falling to less than 130, plus some disturbed geomagnetic conditions as well. On Wednesday the 24 October, the SFI fell to 121, while the following day the Kp index hit 4.33 thanks to a coronal mass ejection from a […]
Propagation News – 22 October 2023
We had a quieter week, with both lower sunspot numbers and better geomagnetic conditions. The Solar Flux Index was at 135 on Thursday the 19 October, down from 156 the week before. Let’s hope this is a temporary lull in Solar Cycle 25’s progression. We had no M-class or higher flares to contend with and […]
Propagation News – 15 October 2023
We had a period of low geomagnetic disturbance last week, which allowed the upper HF bands to shine. There were lots of reports of DX being worked on the 10m band as the Kp Index sat mainly in the ones and twos, with a maximum of Kp 3.33 for one three-hour period on the 9 […]
Propagation News – 8 October 2023
Last week progressed quite well from a solar point of view, at least until the morning of Thursday 5 October when the Kp index rose to five. But the Kp high was short-lived and only lasted for one three-hour reporting period. Until this point, it had been around one to three all week, which meant […]
Propagation News – 1 October 2023
Another week of disrupted solar and geomagnetic conditions saw the Kp index go up and MUFs come down. A period of minor G1 geomagnetic storming was observed on Tuesday the 26 September thanks to an enhanced solar wind stream containing a long-duration southward-facing Bz component. If the solar wind’s Bz magnetic field points south, it […]
Propagation News – 24 September 2023
Last week’s space weather was very disturbed from a geomagnetic point of view. The Kp index hit 6.67 on the 19 September, spawning reports of visible aurora from around the UK once again. This was the result of a coronal mass ejection passing Earth, which caused a period of strong G3 storming very early that […]
