There wasn’t any data from UV’s GSM/GPS transmitter yesterday, an indication he might have left Portugal for Africa. The proof arrived today.
UV’s sea route is interesting. Compare it to 2016 – which was quite similar to his 2014 Autumn migration course.
The reason for the difference is the wind direction.
That was a forecast in the last post about UV, but is fairly accurate. UV left the coast at 11.19 UTC. The wind strength was about 25 km/hr and was taking him westward. But, because he knows where the coast of Africa is – unlike juveniles – he also knew that if he flew fast he would meet it. UV flew 127 km down-range between 12.00 and 14.00 UTC, very good going.
You can see a shift to a more southerly course in his route. This was at about 15.00. Compare the wind chart and his position when he changed course. He found favourable winds for going south, so took advantage.
More statistics! UV flew 587 km yesterday in total. His sea crossing took from 11.19 to about 21.30. Here is his departure point from Portugal.