mercoledì 8 Dicembre 2021
Breaking News
Home > Propagazione (page 18)

Propagazione

The K7RA Solar Update

 Tad Cook, K7RA, Seattle, reports: Up until September 23, we saw 32 consecutive days with no sunspots. Then new sunspot group AR2773 appeared, which has a magnetic signature indicating it’s part of new Solar Cycle 25. Spaceweather.com noted it was a weak one, and may not persist for long. The daily sunspot number for September 23 was 13, indicating three …

Read More »

Propagation outlook from SWPC Boulder

:Product: Weekly Highlights and Forecasts :Issued: 2020 Sep 21 0147 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 14 – 20 September 2020 Solar activity was very low throughout the …

Read More »

Propagation News – 20 September 2020

We had another uninspiring week with zero sunspots. However, there was DX to be had, with many Chiltern DX Club members reporting openings on 17 and 15 metres for well-equipped stations. Clive, GM3POI reported hearing India, Japan, Lebanon and South Africa on 17 metres and South Africa, Kenya, Oman and Kuwait on 15 metres. This was no doubt due to …

Read More »

The K7RA Solar Update

Tad Cook, K7RA, Seattle, reports: Lots of news lately about the solar cycle, but no sunspots. Today, September 18, is the 29th consecutive day with no sunspots. The news this week was about the Solar Cycle 24 minimum, announced recently as having occurred during December 2019 and indicating the start of Solar Cycle 25. The reason that announcement is just …

Read More »

Propagation outlook from SWPC Boulder

:Product: Weekly Highlights and Forecasts :Issued: 2020 Sep 14 0144 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 07 – 13 September 2020 Solar activity was very low throughout the …

Read More »

Propagation News – 13 September 2020

It was another week with zero sunspots, but the upside was that we had settled geomagnetic conditions. The maximum Kp index of two, but more often than not just one, was brought about by an absence of coronal holes last week. This meant that the ionosphere was pretty stable, with Maximum Useable Frequencies (MUFs) over a 3,000km path heading towards …

Read More »

The K7RA Solar Update

Tad Cook, K7RA, Seattle, reports: An extended lull in solar activity persists. The smoothed sunspot minimum occurred last December, but the flurry of moderate sunspot activity in August has not continued. An event to look forward to is the autumnal equinox, which occurs at 1330 UTC on Tuesday, September 22. We should see a seasonal improvement in HF propagation around …

Read More »

Propagation outlook from SWPC Boulder

:Product: Weekly Highlights and Forecasts :Issued: 2020 Sep 07 0121 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 31 August – 06 September 2020 Solar activity was very low for …

Read More »

Propagation News – 6 September 2020

This last week was characterised by unsettled geomagnetic conditions caused by an incoming high-speed stream for a solar coronal hole. We warned of this in last week’s report, but in view of the small size of the coronal hole, we didn’t really expect its effects to be quite so severe. The solar material impacted the Earth on Friday, 28 August, …

Read More »

The K7RA Solar Update

Tad Cook, K7RA, Seattle, reports: As of Thursday night, no sunspots have appeared for the past 13 days. I know we are all hoping for more sunspots, and I’m sure they’ll be returning soon; the trends for this newly awakening solar cycle favor it. One event to look forward to this month is the autumnal equinox on Tuesday, September 22, …

Read More »

Propagation outlook from SWPC Boulder

:Product: Weekly Highlights and Forecasts :Issued: 2020 Aug 31 0137 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 24 – 30 August 2020 Solar activity was very low for the …

Read More »

Geophysical Alert Message (WWV) K=3, G1 storms

:Product: Geophysical Alert Message wwv.txt :Issued: 2020 Aug 29 0300 UTC # Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center # # Geophysical Alert Message # Solar-terrestrial indices for 28 August follow. Solar flux 70 and estimated planetary A-index 10. The estimated planetary K-index at 0300 UTC on 29 August was 3. Space weather for the …

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