This map of 1-June-2005 covers from 11:55z to 14:41z. This date will be in the memory of many for long time. We had sporadic-E on two meters for about 9 hours and more than 5000 QSO had been reported! There are 3 different maps available for this day.
At 12:00 a "cloud" reaches 144 MHz above northern France, lasting till 13:15. Only 25 minutes later a new cloud shows up above central Ukraine/Southern poland, lasting till 14:30. This was the prelude of the HUGE opening that came only half an hour later. (See other maps for the rest of the day)

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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)


 
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