https://brasilia2017teamgb.wordpress.com/2017/08/04/dusties-on-launch/

An earlier start to try to make the most of the day  lucky we did
as it went tailwind by 12:30 leaving 40-odd pilots on the ground.

Massive dust devil went through launch, narrowly missing gliders but trashing
the gazebo set up by the organisers.

Team set a 100k task to the esplanade via 3 Tps but landed at the 3rd (north
side of the lake) because of conditions switching off.