This map of 11-June-2005 covers from 15:25z to 18:41z. At 15:30 a "cloud" above central Italy made MUF rise over 144 MHz for about half an hour. At 16:15 a new one appears above Croatia, lasting till 16:50, and right then a new cloud appears above the German-Polish border. This last one was the most outstanding of the day and it spread along the following two hours towards PA, where its ionization went down. Maximun MUF was about 210 MHz.
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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)