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Propagazione

Propagation News – 24 April 2022

Last week was characterised by solar flares – lots of them! There were numerous strong flares, although the majority occurred in the early hours and so didn’t affect the ionosphere over Europe. Solar flare events can cause short-lived radio blackouts as the energetic photons penetrate deep into the D-layer. Solar activity during the past 30 days has increased drastically with …

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Geophysical Alert Message (WWV) SF 160, K 3, blackouts R2

:Product: Geophysical Alert Message wwv.txt :Issued: 2022 Apr 20 0300 UTC # Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center # # Geophysical Alert Message # Solar-terrestrial indices for 19 April follow. Solar flux 160 and estimated planetary A-index 7. The estimated planetary K-index at 0300 UTC on 20 April was 3. Space weather for the …

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Propagation News – 17 April 2022

RSGB GB2RS News Team April 14, 2022 We had a week with declining solar flux index numbers, but with the ever-present threat of coronal mass ejections. The SFI declined from 101 on Sunday to 96 on Wednesday with the possibility of further falls as the week goes on. A solar filament located near the centre disk of the Sun erupted …

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Propagation outlook from SWPC

:Product: Weekly Highlights and Forecasts :Issued: 2022 Apr 18 0229 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 11 – 17 April 2022 Solar activity reached very high levels during …

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Geophysical Alert Message (WWV)

:Product: Geophysical Alert Message wwv.txt :Issued: 2022 Apr 18 0300 UTC # Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center # # Geophysical Alert Message # Solar-terrestrial indices for 17 April follow. Solar flux 135 and estimated planetary A-index 11. The estimated planetary K-index at 0300 UTC on 18 April was 2. Space weather for the …

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Geophysical Alert Message

:Product: Geophysical Alert Message wwv.txt :Issued: 2022 Apr 17 0300 UTC # Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center # # Geophysical Alert Message # Solar-terrestrial indices for 16 April follow. Solar flux 122 and estimated planetary A-index 8. The estimated planetary K-index at 0300 UTC on 17 April was 3. Space weather for the …

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Geophysical Alert Message (WWV)

:Product: Geophysical Alert Message wwv.txt :Issued: 2022 Apr 14 1500 UTC # Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center # # Geophysical Alert Message # Solar-terrestrial indices for 13 April follow. Solar flux 99 and estimated planetary A-index 9. The estimated planetary K-index at 1500 UTC on 14 April was 4 {was 5 at 1200} …

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Propagation outlook from SWPC

:Product: Weekly Highlights and Forecasts :Issued: 2022 Apr 11 1312 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 04 – 10 April 2022 Solar activity was at low levels through …

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Propagation News – 10 April 2022

RSGB GB2RS News Team April 8, 2022 We had another week of high-ish solar flux numbers, but this time we had relatively settled geomagnetic conditions that really allowed the ionosphere to play ball for radio amateurs. The week started well with the SFI above 140, which then declined as the week went on and was at 117 on Thursday. The …

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The K7RA Solar Update

Lots of solar activity livened up HF conditions over the past reporting week, March 31 to April 6. Average daily sunspot number rose from 90.1 to 94.6, and daily solar flux from 132.7 to 135.3. It looks like solar flux may peak this month at 140 on April 24-28. Since March 18 we were unable to get daily solar flux …

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Propagation outlook from SWPC

:Product: Weekly Highlights and Forecasts :Issued: 2022 Apr 04 0517 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 28 March – 03 April 2022 Solar activity reached high levels at …

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Propagation News – 03 April 2022

Last week we said there was a sense of excitement as it looked like the solar flux index would increase. But even NOAA didn’t predict that it would rise to 156, which it hit on Monday the 28th. Unfortunately, along with high sunspot numbers, we have had unsettled geomagnetic conditions. On Sunday and Monday last week, the Kp index hit …

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