Weather has a habit of doing things that seem completely out of place. Fish have reportedly fallen during rainstorms, desert towns have woken up to snow, and enormous dust clouds have swallowed entire cities. Some of these events were brief enough to miss if someone wasn’t looking outside, while others caused serious damage and made international headlines. Here are 15 unusual weather events that actually happened, including a few that still look difficult to explain in photographs. 1. Sydney Woke Up Under a Blood-Red Sky On September 23, 2009, Sydney residents opened their curtains to find the city covered in…