Inter dimensional beings are well associated with foggy weather . I have noticed that during every new moon over the past few months it has been very foggy around the two days before and after.

My studies in the occult and Shia understanding of Jhin suggests that there is a correlation between the weather and inter dimensional activity.

Lightning is also highly associated with Jhin. Any sort of lightninggn activity is a good indication of inter dimensional activity.

Water is one of the main components used for star gate inter dimensional travel. I cannot confirm this, but heavy rainstorms would likely indicate inter dimensional traveling or possibly the use of star gates.