Science of Weather: Different Air Masses 02:23. If you hear a meteorologist, say stormy weather is expected, we didn't just pull it out of thin air. Instead, we looked at weather models predicting ...

North America is a vast Northern Hemisphere continent. ... Arctic air masses are funneled down from Canada, along the Rockies, and over the Dakota Prairie Grasslands.

When conditions are right, air masses that are filled with this dust can make it across the thousands of miles required to reach North America. Meteorologists call this type of air mass the ...

Cold air masses can settle in more frequently, leading to extended periods of chill. Storms : New England sees a mix of dry periods and intense winter storms during La Niña.

As the name implies, the Siberian Express refers to air masses that start in northern Russia and end up in the Lower 48, ... arctic air escape down into North America, Europe, or Asia.