Clouds return late ahead of the next snowmaking system. A large pattern of weather called the Arctic Oscillation is responsible for the cold and unsettled weather that's been moving through the U ...

The two most important patterns impacting us now are the Arctic Oscillation…or A-O, and the Pacific North-American Oscillation often shortened to the PNA. The technical name for these patterns ...

Another global feature we want to study and try to forecast is the Arctic Oscillation (AO). This is a climate pattern that helps to determine the shifts in pressure between the Arctic and the mid ...