Tag: propagation

G2 (Moderate) Geomagnetic Storm Watch Issued for October 25

The NOAA Space Weather Prediction Center (SWPC) said a G1 (minor) geomagnetic storm watch has been issued for October 24, and a G2 (moderate) geomagnetic storm watch has been issued for October 25.

In a G1 storm, weak power-grid fluctuations can occur, minor impact on satellite operations is possible, migratory animals may be affected, and aurora borealis is commonly visible at higher latitudes …

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Spotless sun sparks bright auroras

The sun is sliding into a deep Solar Minimum that continues to defy some expectations. For much of the past week, the sun was absolutely blank–no sunspots–and solar activity was deemed ‘very low.’

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Near vertical incidence skywave – wikipedia

The wikipedia article about NVIS Near vertical incidence skywave with information about usable frequencies and some general information on main NVIS oeprations usages For the full article, https://www.dxzone.com/dx32862/near-vertical-incidence-skywave-wikipedia.html

WWROF Webinar on Contest Season Propagation Outlook Posted

The October 4 webinar, “A Look at Propagation for the 2017 2018 Contest Season,” sponsored by the World Wide Radio Operators Foundation (WWROF), has been posted. Conducting the webinar were Carl Luetzelschwab, K9LA, and Frank Donovan, W3LPL. Contesters and DXers alike will appreciate their predictions and suggestions as to what to expect over the next few years in terms of HF conditions.

 

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Solar flare causes ‘Ground Level Event’

Sunday’s powerful X8-class solar flare from departing sunspot AR2673 accelerated a swarm of protons toward Earth, producing a strong solar radiation storm and a ‘ground level event’ (GLE)
For the full article, http://www.southgatearc.org/news/2017/september/solar-flare-causes-ground-level-event.htm

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RED ALERT – Aurora Now!

The current disturbance level is at 309.7nT. Pity we have clouds in Birmingham (UK) but they have quite a nice pink tinge to them.

Major solar flare

The Space weather site reports on Sept. 6 at 1202 UT, sunspot AR2673 unleashed a major X9-class solar flare – the strongest solar flare in more than a decade

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More Professional and Citizen Research Suggests Eclipse Briefly Affected HF Propagation

Both professional and citizen scientists conducted formal and informal investigations into the effect of the August 21 solar eclipse on HF radio propagation. Nathaniel Frissell, W2NAF, of HamSCI, has said it will take some time to get a more scientific analysis of data compiled during the Solar Eclipse QSO Party. Frissell and others are investigating whether the sudden absence of sunlight durin…

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