From a propagation perspective a bit of a strange day.
All the usual beacons PE9GHZ, ON0VHF, PI7RTD, PI7ALK and ON0GHZ have been audible all day via scatter from any beam heading from about 0 deg to 135 deg with very little amplitude change.
Around midday utc I carried a swift investigation to understand if elevation mattered at all. PE9GHZ and PI7ALK proved most stubborn, only disappearing when elevation reached 20 deg. The others disappeared at around 12 deg.
All this has been due to a cloud mass that is sitting over the southern North Sea. It was this same cloud mass that caused the thunderstorms earlier in the day and ground to a halt as it came up against the developing High pressure system off the coast of Norway.
This system is expected to slip further south on Sunday.
Of partcular note though, apart from not having the pigeon return to sit on the feed, is that DB0GHZ has been audible as well. Looking closely at the signal it is clear it is arriving here via weather scatter. That is it is affected by the cloud mass is not surprising and I expect it is an occasion where ducting and weather scatter modes combine.
It will be intersting to see what happens as the cloud dissipates.
Wave height has reduced during the day and is currently about 1m so evaporation ducting enters the equation even up to Heligoland.
The strong cold currents from the north are mixing with warm English Channel currents in the Dover Straits, which maybe the cause of the fog.