Keep an eye on the South African weather

With an La Nina in force, the weather is South Africa is likely to be changeable. One of the best forecasts come from the South African Weather Service which has its own aerosport section

Have a look at the latest Satellite and Rainfall overlay, Thunderstorm probability, spot graphs showing expected Convective Cloud Base and Thermal Strength. The De Aar 5 day forecast is here. Wind guru provides usefull weathermaps.

Look out for 20,000ft ft cloud base, with zero thunderstorm probability and a strong WNW airflow and the record will be on!