White Squalls are caused by microbursts - downdrafts - and they happen so fast that no dark clouds have time to form as warnings. That’s likely what Q is alluding to: outta nowhere.
Yup, that’s what I think.
I typed wrong, I meant “out of the blue”.
No warning.
(AND NO QUARTER GIVEN!)
Must have clouds for a microburst, part of the definition.