log-warning-minimum-level

log-warning-minimum-level is a variable defined in `warnings.el'.
Its value is

:warning

• This variable is an alias for `warning-minimum-log-level'.

Documentation:
Minimum severity level for logging a warning.
If a warning severity level is lower than this,
the warning is completely ignored.
Value must be lower or equal than `warning-minimum-level',
because warnings not logged aren't displayed either.

You can customize this variable.