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Comment: This was a very strange opening. An sporadic-E cloud formed sudently at the south of Ireland reaching quickly 144 MHz and lasting only some minutes, allowing a bunch of QSOs between GM and EA1/CT.
It 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 QSOs and reports of European stations. 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. and 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 the lack of data mentioned above.
This animated map covers from 5-June-2003 16:25z to 17:16z at one minute intervals. Use the "Stop" button of your browser to stop the animation and the "Refresh" button to run it again from te begining.
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