This map from 22-July-2003 covers from 07:20z to 08:01z. This was a short and spotty one, but it was curious to notice that once again there were two clouds (very unstable this time) at the same time, and that from Grece and western Turkey worked Spain/France and Russia almost at the same time. It has been hard to find detailed information of the QSOs so the resulting map is not impressive. (See also the maps of the HUGE opening in the afternoon/evening PART1 and PART2)

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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.

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| Other Sporadic-E maps | MUF forecast |

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