giovedì 11 Agosto 2022
Breaking News
Home > Propagazione (page 20)

Propagazione

The K7RA Solar Update

Tad Cook, K7RA, Seattle, reports: On April 12, new sunspot group AR2814 appeared following 5 days of no sunspots. Daily sunspot numbers on the next 4 days were 16, 16, 17, and 22, taking the average daily sunspot number for the April 8-14 reporting week from 6.4 last week to 7. The April 15 sunspot number of 22 was not …

Read More »

Propagation outlook from SWPC Boulder

:Product: Weekly Highlights and Forecasts :Issued: 2021 Apr 12 0114 UTC # Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center # Product description and SWPC contact on the Web # https://www.swpc.noaa.gov/content/subscription-services # # Weekly Highlights and Forecasts # Highlights of Solar and Geomagnetic Activity 05 – 11 April 2021 Solar activity was very low throughout the …

Read More »

Propagation News – 11 April 2021

We had yet another week with poor sunspot numbers. Although we started the week with a sunspot number of 11, representing one spot in one group, it didn’t take long for this to decline and we were back to zero spots again and a solar flux index of 76. What we did have, however, were the effects of a high-speed …

Read More »

The K7RA Solar Update

Tad Cook, K7RA, Seattle, reports: Sunspots were only visible on 4 days of the current reporting week — on April 3-6 — and now on Friday morning, still no sunspots. As a result, average daily sunspot number declined from 11.9 last week to 6.4 currently. Average daily solar flux also dropped from 77.4 to 73.4. On Thursday the daily solar …

Read More »

Propagation outlook from SWPC Boulder

:Product: Weekly Highlights and Forecasts :Issued: 2021 Apr 05 0228 UTC # Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center # Product description and SWPC contact on the Web # https://www.swpc.noaa.gov/content/subscription-services # # Weekly Highlights and Forecasts # Highlights of Solar and Geomagnetic Activity 29 March – 04 April 2021 Solar activity was very low throughout …

Read More »

Propagation News – 4 April 2021

This last week has certainly been quieter from a geomagnetic disturbance point of view. We have seen the Kp index at one for much of the time, and it even hit zero in the early hours of Tuesday the 30th. We have not been quite so lucky on the sunspot front, with zero spots being recorded on Wednesday. Nevertheless, 17 …

Read More »

The K7RA Solar Update

Tad Cook, K7RA, Seattle, reports: Average daily sunspot numbers declined this week from 17.9 to 11.9. Why? Because on the final 2 days of the March 25 – 31 reporting week sunspots disappeared. That’s right. We’re back to the blank sun again, unfortunately. Spaceweather.com reported on Wednesday that we may soon see a potential sunspot that’s currently on the far …

Read More »

Propagation outlook from SWPC Boulder

:Product: Weekly Highlights and Forecasts :Issued: 2021 Mar 29 0157 UTC # Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center # Product description and SWPC contact on the Web # https://www.swpc.noaa.gov/content/subscription-services # # Weekly Highlights and Forecasts # Highlights of Solar and Geomagnetic Activity 22 – 28 March 2021 Solar activity was at very low levels …

Read More »

Propagation News – 28 March 2021

What a mixed week we had, with large geomagnetic storms interspersed with quiet periods. The first storm occurred last weekend, when the Kp index hit six on Saturday and then five on Sunday. This wasn’t unexpected and we did warn that it might happen in the last GB2RS broadcast. A second storm occurred when a weak shock passage was detected …

Read More »

The K7RA Solar Update

Tad Cook, K7RA, Seattle, reports: On March 21 and 22 two new sunspot groups, 2811 and 2812, appeared. Average daily sunspot number this week faded a bit from 19 to 17.9, but average daily solar flux went from 78.1 to 78.6. Neither change is significant. We haven’t seen a day with no sunspots since March 1, so that brings the …

Read More »

Propagation outlook from SWPC Boulder

:Product: Weekly Highlights and Forecasts :Issued: 2021 Mar 22 0107 UTC # Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center # Product description and SWPC contact on the Web # https://www.swpc.noaa.gov/content/subscription-services # # Weekly Highlights and Forecasts # Highlights of Solar and Geomagnetic Activity 15 – 21 March 2021 Solar activity was very low throughout the …

Read More »

Propagation News – 21 March 2021

We had a week of settled geomagnetic conditions, following a mixed weekend. The consensus on the Commonwealth Contest was that conditions were not too good, although plenty of amateurs managed to put VK in their logs, despite the Kp index hitting four during the event. The Sun remained fairly quiet, with a solar flux index of 81 on Saturday and …

Read More »
Copy Protected by Chetan's WP-Copyprotect.