The "Chinook Arch" is an arch that we can see on the horizon in the sky over the Rocky Mountains in Alberta Canada. It is a weather phenomenon that means we will have 3 days of warm weather in the winter time! We can go from -30 degrees Celcius one day, then up to plus 20 degrees Celcius the next day due to the warm winds coming over top of the Rocky Mountains!
The Chinook arch tapers off to the right.
In the summer, a Chinook wind means 3 days of pleasant weather with a slight cool breeze. In winter, Chinook wind means 3 day of warm weather, a nice break from our very cold winter weather!
