đź7đ°đđŒ đčđđ«Radio Propagation
Strong Sporadic-E conditions over Europe now.
Orange=50 MHz
Hot Pink=FM Band 2
Red=144 MHz
Radio Propagation
The MUF is not so high over North America.
Orange=50 MHz
Radio Propagation
Northern hemisphere sporadic-E propagation is looking good again today. High MUF near Scandinavia is producing some good FM Es propagation around Europe.
Orange=50 MHz
Hot pink=FM band 2
Red=144 MHz
Radio Propagation
A strong trans-Atlantic and N Hemisphere sporadic-E opening is in progress.
Orange=50 MHz
Hot pink=FM Band 2
10 minute cadence
Space Weather
CME WATCH RESTARTED:
Proton levels as measured by the EPAM instrument on ACE at L1 are rising quickly.
This is a sure sign that the CME hasn't missed us entirely and that we will be catching the westward leg of it very soon.
If you imagine the shape of a croissant, the thinning "legs" extend all the way back to the sun to the east and west, whilst the fat core heads far away from the sun.
We can expect a long period of storming with fairly chaotic Bz values whilst the structure passes through.
#spaceweather
#aurora
#radiopropagation
#amateurradio
#g7izu
Space Weather
CME Watch: We're waiting for the first signs of the CME arrival. As of 10h30 UT we don't see much going on, but stay tuned as I'll be very quick to let you know of it's arrival.
No major changes in the prediction - G3-G4 is possible, but not guaranteed. We're unlikely to see the core of the CME as it's somewhat offset to the south-east, but the effects of a following coronal hole may just push it further west, causing it to have more effect on us. We're likely to see "flux rope" conditions from the edge of the storm, which tend to be very turbulent.
If the storm arrives earlier it will be stronger than if it arrives later. A second eruption from a neighbouring active region may slightly complicate the structure of the CME, so we don't really know how the next few hours will play out.
Stay tuned, or better still monitor my Space Weather Dashboard. It'll be interesting if nothing else!
Space Weather
CME update
Latest analysis suggests the CME is slower than first suggested by models, and impact maybe after 12h UT on the 8th (but no guarantees!)
The chance of visible aurora in Europe in the evening is increasing!
#spaceweather
#radiopropagation
#amateurradio
#aurora
#g7izu
Space Weather
CME update
A strong solar storm is inbound to Earth following an M1.8 flare yesterday.
The best estimates of the CMEs arrival time are early to mid-morning on the 8th (UT), but predictions have a span of many hours and estimates have been wrong in the past. An early assessment using Stereo A imagery suggest that the storm is slower than expected.
There is a strong possibility of G3 to G4 storming. HF radio, GPS and power grids could be affected.
Low and high energy solar proton levels are also rising, with a prediction for an S1 solar radiation storm which will affect HF radio paths across the polar regions, and increased dosage risks for high altitude fliers and astronauts.
Radio Propagation
Sporadic-E FM band 2 is being reported between UK and Azores.
Orange=50 MHz
Hot pink=FM Band II
Space Weather
Second (or is it the 3rd?) CME is incoming - the main event!
At L1 the solar wind speed has jump up to >600km/s, and the Bz has swung sharply south. This is good for aurora hunters, but bad for anyone else like power grid operators and satellite users.
Starting in less than an hour, Earth's magnetic field will take quite a large hit.
Stay tuned for details.
