Why Czechia makes sense for soaring forecasts
The country in the European batch that is least obviously a soaring forecast problem and most actually one. Here is why Czechia is in the first batch.
Czechia is the country in the first European batch that is least obviously a soaring forecast problem, and most actually one. This is a short note on why it is in this batch.
The Alps justify themselves. Anyone glancing at a topo map can see why a 13 km global model fails over a Tirol valley. Czechia looks easier - mid-elevation, broad ridges, plenty of flatland - which is exactly why most pilots flying it are stuck with global-model output that gets the convergence and ridge-lift detail completely wrong. Czech XC is competitive at European level, with records out of Raná routinely reaching the high hundreds of kilometres, and the underlying meteorology is the kind of mid-elevation flatland-and-ridge mix that benefits enormously from going from 13 km to 4 km.
Operationally it is also a good fit for the schedule. End-to-end runtime sits between Slovenia and Austria at around 19 minutes per cycle, which slots cleanly into the four-daily UK + Alpine schedule without crowding anyone out. It is also the country that proves Convek is not only an Alpine product - the same WRF-ARW + GFS + YSU/WSM3/Noah/RRTM stack handles Bohemia and Moravia exactly as cleanly as it handles the Bernese Oberland.
Czechia closes out the first European batch. Switzerland, Slovenia and Austria prove the Alpine use cases; Czechia proves the same API also works for compact mid-elevation XC terrain. The country-specific bits are the rectangle, the `cz/4km/` R2 prefix, the `Europe/Prague` timezone, and the heartbeat. The rest is the same Convek contract.