Every Sunday night at 1800z, Tom will run a weekly regional forecast. The idea is that you can sort your plans for that week – perhaps you’ll reconsider the trip to Cardiff and go to Glenforsa instead.
The output is a table here.
Each big block of colour gives the average flight category for that period and region. Trends or mitigating conditions are highlighted, along with probable cloud base and visibility.
Tom takes into account the following:
- VFR, IFR, MVFR or LIFR rules.
- Icing risk, with the logic including freezing levels, cloud cover, precipitation.
- Density altitude.
- Wind at surface and probable cruise altitudes.
- Atmospheric stability.
- Specific mountain weather logic to identify unstable air masses, orographic lift, inversions, or valley fog.
- NOTAMs filtered appropriately