mercoledì 22 Gennaio 2020
Breaking News
Home > Propagazione

Propagazione

Propagation outlook from Boulder

:Product: Weekly Highlights and Forecasts :Issued: 2020 Jan 20 0748 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 13 – 19 January 2020 Solar activity was very low. The solar …

Read More »

The K7RA Solar Update

Cycle 25 sunspots persisted for the first two days (January 9-10) of this reporting week, January 9-15, with daily sunspot numbers of 14 and 11. That brought the weekly average daily sunspot number from 8.4 last week to 3.6. Average daily solar flux edged up from 71.8 to 72.5. Average daily planetary A index declined from 6.3 to 5.6, and …

Read More »

Propagation News – 19 January 2020

We had another pretty uneventful week with zero sunspots, but no major geomagnetic disturbances. The K-index rose to three on Thursday morning due to the effects of the solar wind, but the ionosphere was otherwise calm geomagnetically. We said last week that there had been some winter sporadic E, which had livened up 10 metres. We also said there had …

Read More »

Propagation outlook from Boulder

:Product: Weekly Highlights and Forecasts :Issued: 2020 Jan 13 0408 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 06 – 12 January 2020 Solar activity was very low. Region 2755 …

Read More »

The K7RA Solar Update

A single new Cycle 25 sunspot appeared over the past week, January 1 through January 8. NOAA did not record or number the new spot until January 2, but Spaceweather.com indicated it (sunspot region 2755) began on January 1. Then another new Cycle 25 spot emerged on Thursday, January 9, with a daily sunspot number of 14. I was excited …

Read More »

Propagation News – 12 January 2020

Having predicted in last week’s broadcast that there would be no geomagnetic disturbances, we did in fact have two periods with an elevated Kp index this week. The first occurred on 5 January, when the Kp index hit four. This was due to the impact of the solar wind. The Kp index rose again to four on Thursday, the 9th, …

Read More »

Propagation News – 5 January 2020

After the two new solar cycle 24 sunspots that appeared last week, we now have another spot developing in the Sun’s south-west quadrant. Don’t get too excited though, as the last two spots soon disappeared and this one might not amount to much either. It is, however, a positive sign that the next cycle is coming, albeit slowly. Conditions have …

Read More »

The K7RA Solar Update

Sunspots appeared recently, all indicating cycle 25 due to their polarity, opposite from spots in cycle 24. Sunspots appeared December 24-26, and it looks like a new cycle 25 spot on January 1. NOAA did not report it (too weak?) but Spaceweather.com reported a sunspot number of 11 on January 1. On January 2 NOAA reported the new spot with …

Read More »

Propagation outlook from Boulder

:Product: Weekly Highlights and Forecasts :Issued: 2020 Jan 06 0724 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 30 December – 05 January 2020 Solar activity was very low. New …

Read More »

Propagation outlook from Boulder

:Product: Weekly Highlights and Forecasts :Issued: 2019 Dec 30 0435 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 23 – 29 December 2019 Solar activity was very low. New Region …

Read More »

Propagation outlook from Boulder

:Product: Weekly Highlights and Forecasts :Issued: 2019 Dec 23 0449 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 16 – 22 December 2019 Solar activity was very low. No Earth-directed …

Read More »

The K7RA Solar Update

Still no sunspots, and it’s been the same for 37 consecutive days. Geomagnetic conditions remained quiet, until “a minor stream of solar wind” (according to Spaceweather.com) hit us on December 18. This drove the planetary A index to 13 from the low single digit values earlier in the week. Average planetary A index for December 12-18 rose to 4.6, from …

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