These fronts are where a lot of active weather likes to form, since air likes to mix along these boundaries of warm and cold ...

Air masses can change depending on their surroundings, and when combined, they can create active weather conditions, such as severe thunderstorms and strong cold fronts. Maritime Tropical (mT ...

There are five combinations that exist around North America. Maritime tropical airmasses: which originate over the warm ...

If the cold air mass grows stronger than expected, it may result in warning-level snowfall. In Minakami, Gunma Prefecture, 43 cm was recorded for the 24-hour period that ended at 7 a.m. on Feb. 19.