GB2RS Propagation News
Propagation News – 1 February 2026
We had a much quieter week Sun-wise, with fewer geomagnetic disturbances and a decreasing solar flux index. Last week started at 153 but decreased to 133 by Wednesday. The Kp index started the week at 2.33 and, apart from an excursion to 5.33, was below 4.33 all week. The 5.33 value was due to an […]
Propagation News – 25 January 2026
Last week featured a massive aurora that couldn’t have been predicted in the previous report. The cause was a large Earth-directed coronal mass ejection on Sunday, 18 January at 1808UTC. The solar wind speed was above 1,100km per second, so the impact on the Earth arrived sooner than expected. The result was that the Kp index […]
Propagation News – 18 January 2026
The Solar Flux Index increased a little last week but was never exceptional. We started at 111 on 11 January and ended at 127 on 15 January – hardly much to get excited about. 11 January also marked the most geomagnetically disturbed day of the week, with the Kp index hitting 5.33. Luckily, the rest of […]
Propagation News – 11 January 2026
Now that the dust has settled after the New Year’s celebrations, we can get back to our regular propagation reports. The New Year has started with minor disturbed geomagnetic conditions at times, plus lots of C-class solar flares, and a healthy dose of sunspots. As we slide down the slope towards sunspot minimum, we can […]
Propagation News – 28 December 2025
We have had some solar ups and downs over the past week. A high-speed stream from a large coronal hole has kept the Kp index high at times, plus the solar flux index has been relatively low due to a lack of sunspots. The coronal hole has been massive, covering from the Sun’s south pole […]
Propagation News – 21 December 2025
Last week, we suffered from the double whammy of a reduced solar flux index and an increased Kp index. The solar flux index went down to 119 by Thursday 18 December, with the sunspots looking pretty spartan when compared with just a week or so ago. Unfortunately, a coronal hole contributed to a fast solar […]
