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gtj101 said..
Hi, thanks again for your comments! It make me get other arguments. I know that a video could hardly show reality. I also know what strong wind his. I sail since almost 15 years in windy place like Lake Arenal in Costa Rica. We could often see some strong wind with liquid smoke, close to 40 kts.
I wonder if the temperature of the water change something with the liquid smoke. If the water is cold, the wind might perhaps be higher so you have lest wind on the surface and less smoke1?
Anita and me, we went close to the water at the Wesh Center, with a wind meter and we saw some 45 knots on the shore, it'S quite possible to see more wind a bit further.
When your are there, you could feel so over even before the liquid smoke appear. The temperature of the water there is not hot, you have some snow on the moutain arround.
I think it is too easy to say Ha it's not more then 30-35 knots! : ) Talk with the boys from Leucate, 30-35 knots is not strong wind for them! : )
Some guys told me that the wind is often more strong at La Franqui ( see part 2 ) then Leucate, wesh center.
For the videos we could see here with the guys that could hardly walk, I would say it's over 50 knots for sure. And, for those who say It's not possible to ride with control in 50 knots, I would say, It's true, it's just surviving, you jibe and you ask yourself if it was more fun then scarry! : )
Whatsosever, it's super fun to try at least and to talk about it for sure! : )
We are so lucky to have fun with the best sport.
It's true that videos sometimes can give a somewhat false impression of wind strength, but those who know what to look for can still see important signs.
Water temperature makes no difference to spindrift as far as I have experienced. It gets very cold here in late winter too.

It's great that you have actually attemped to measure the wind with instruments. How long did those 45 kt peaks last. Minutes or a second or two? Also note that many cheaper, 'sold for windsurfing and kiting' annemometers are not very accurate. What do you have?
The video showing the spindrift lifting high into the air can be deceptive. In that case it is vertical rotating turbulence, caused by the surrounding mountains that it lifting it so high. That certainly is
very windy though! In flat terrain coastal locations, the liquid smoke is horizontal, and lower to the surface.
I have seen a lot of videos from Leucate andLa Franqui, and correspond regularly to some of the sailors from there. They certainly do get very strong winds at times with big gusts. Offshore winds will always have a greater gust range due to the turbulence, but the highest gusts will tend to be briefer. In some of the videos seen from there it is clear the winds are over 35-40 knots a lot of the time, so gusts to 50 would probably be there also.
It is also 'too easy to say' "oh yeah, we sailed in 50 knots today" when in reality, it was either no where near that and it was just a wild guess from out of control and freaked out sailors who had no way to actually measure the wind, or there was indeed very occaisional and brief gusts to 50, and likely, in beween the times anyone could actually sail. I have seen both many times.

I would not go so far as to say it is 'not possible' to sail in 50 knots, but it is near that. I have seen people trying to do it on very small sails on quite flat water, and it is definitely impossible in a sustained squall at that strength. It may be possible to survive brief gusts to near 50 from say 35-40 knots when in ideal conditions on the right gear, but I have my doubts.
There was a memorable occasion here in 2009 when we had sustained 40 kts plus winds during a speed even where some of the best sailors in the country were gathered. Gusts to 60 were observed, and sustained squalls around 45-50. A lot of the day most of us could only stand around and wait for lulls between squalls to try and get a run in some semblence of control. Those Lulls were around 40 (sustained), gusting 45+ knots and many still could not survive a run on flat water and well off the wind. A couple of world class big guys manged to do peak speeds of 49 and 50 knots. Tony, who was around 6'7" and 110KG was on a 4.4m cambered speed sail did 49's. Spotty at similar size managed 50 on a 5m sail. I believe both were wearing significant extra weight.
Here is a wind reading taken during this session. Note that the caption is incorrect. The average wind strength reading is below 50, but the gust here was 55 knots. (Hint - play back at 1/2 seed to get a better look at the readings)
Pictures of those two guys sailing when most could not. Bear in mind, even this was well below the strongest winds that day. So probably around 40 knots: