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Propagazione

Propagation de K7RA

From Tad Cook, K7RA Seattle, WA June 10, 2022 To all radio amateurs Hard for me to believe, I had to blink to make sure, but on Wednesday, June 8 for the first time this calendar year there were no sunspots, even though two new sunspot regions appeared on June 4. Average daily sunspot number declined to 44 from 52.9 …

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Propagation News – 12 June 2022

RSGB GB2RS News Team June 10, 2022 The sunspot number on Wednesday was zero with a solar flux index of 100. Given the high flux numbers we have been seeing this is a little disappointing. The last time the visible disk was officially spotless was December 2021. The upside is that there has been little risk of coronal mass ejections …

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Geomagnetic Indices, May 2022

GEOMAGNETIC INDICES – Compiled by: Phil Bytheway DXM.EiC@gmail.com Geomagnetic Summary May 01 2022 through May 31 2022 Tabulated from Geomagnetic forecast Email status daily (K @ 0000 UTC). Flux A K Space Wx 1 109 9 2 no storms 2 112 6 1 no storms 3 114 7 2 strong, R3 4 130 6 2 moderate, R2 5 120 4 …

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Propagation outlook from SWPC

:Product: Weekly Highlights and Forecasts :Issued: 2022 Jun 06 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 30 May – 05 June 2022 Solar activity ranged from very low …

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The K7RA Solar Update

At 2335 UTC on June 2, the Australian Space Forecast Centre issued a geomagnetic warning. “A solar filament recently erupted from the southwest quadrant of the solar disk. Event modeling suggests a minor impact to the Earth’s magnetosphere on late 05 June to early 06 June.” All our measures of solar activity declined in a big way from the last …

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Propagation News – 5 June 2022

What a difference a week makes! Last week we were looking at a solar flux index of 137 and a mass of sunspots. This week the SFI is standing at 101 with only three active regions visible, and one of those is about to rotate out of view. Geomagnetic conditions have been relatively stable, but a little unsettled with a …

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Propagation outlook from SWPC

:Product: Weekly Highlights and Forecasts :Issued: 2022 May 30 0129 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 May 2022 Solar activity ranged from very low to …

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Propagation News – 29 May 2022

The solar flux index remained above 130 last week, being at 137 on Thursday as this report was prepared. It peaked at 165 on Sunday and reached a massive 180 on Wednesday the 18th. All this means that DX is workable on the upper HF bands with the 3D2RRR DXpedition on Rotuma Island near Fiji being chased from the UK. …

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Geophysical Alert Message: K index 5, G1 storms

:Product: Geophysical Alert Message wwv.txt :Issued: 2022 May 28 0300 UTC # Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center # # Geophysical Alert Message # Solar-terrestrial indices for 27 May follow. Solar flux 114 and estimated planetary A-index 17. The estimated planetary K-index at 0300 UTC on 28 May was 5. Space weather for the …

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The K7RA Solar Update

Although our Sun is currently peppered with spots, average daily sunspot number slipped from 134.1 the previous week to 124.7 during this reporting week, May 19 to 25. Average daily solar flux was actually a tiny bit higher, rising hardly at all from 157.3 to 158.8. Solar flux has been in a slow, steady decline from a peak of 179.9 …

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Propagation outlook from SWPC

:Product: Weekly Highlights and Forecasts :Issued: 2022 May 23 0201 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 May 2022 Solar activity reached moderate levels on 16,18, …

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Propagation de K7RA

Propagation Forecast Bulletin 20 ARLP020 From Tad Cook, K7RA Seattle, WA May 20, 2022 To all radio amateurs SB PROP ARL ARLP020 ARLP020 Propagation de K7RA Solar activity was up, up, up this week, with average daily sunspot numbers increasing from 74.4 to 134.1, and average daily solar flux from 120.3 to 157.3. To get some perspective, I averaged the …

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