This map of 29-May-2005 covers from 08:15z to 11:01z. This looks like a bad joke instead of an Sporadic-E opening. Between 08:20 and 09:15 there were two clouds at the same time, one above Ukraine and another above Denmark. The first allowed some QSO between YU/LZ to UA and also from YL to southern UA. Using the second cloud a few QSO were made between DL/F and OH. A little later, at 09:45 a new cloud appears above the Northern coast of Algeria allowing QSO between Southern EA/CT and 9H/IT9. Right after some other QSO were still make using the cloud over Ukraine. There was even a report pointing to another possible scatter area above HB9.
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This map shows the evolution, size and MUF of the sporadic-E cloud that caused the opening on 144 MHz. and it is an estimation based on the information I have picked up here and there of QSO and reports of European stations and basically from DX-spots collected by DXMAPS. I don't claim it to be accurate but just an estimation that could help understand what happened that day.
Also please notice that sometimes you will see MUF rise very quickly. This is because of the almost complete lack of data for frequencies between 51 and 144 MHz. that leads to shown MUF rising almost 90 MHz in one minute. You should understand that this is not the usual behaviour of MUF, but the result of that lack of data.
| Other Sporadic-E maps | MUF forecast |
You can help develop these maps!. After the openings, please send me your logs of 50, 70 and 144 MHz QSO via sporadic-E (Much preferably in ADIF format)