Interdiction

[ComradeP]

There's no additional adjustment for weather conditions (aside from Storm conditions). As noted in the description in the user manual, terrain reduces the probability.

I ran a few tests and at the moment I'm not entirely sure if interdiction can take place when visibility is 1 when it's not a dawn/dusk turn.

Using Low Visibility Air can mean that there are no actual air units available during a turn, but interdiction can still take place. With Low Visibility Air on, air units will only be available if dividing the air units by the percentage results in a number of 1 or higher. If you have 3 air units and the percentage is 25%, nothing will ever be available, but interdiction works.

Interdiction also requires the presence of a non-recon air unit in the OOB for the scenario. No tactical air units, no interdiction.