What is Arctic Air?

A bomb cyclone is a large mid-latitude storm that forms when a storm’s central pressure drops (i.e. “bombs out”), resulting...

Anticyclones are areas of high atmospheric pressure that bring hot, dry weather in the summer and cold fronts in the winter.

A cold front is the leading edge of a cold air mass that replaces a warmer air mass. It is typically associated with sudden...

A strong wind typically ranging from 34 to 40 knots (39 to 46 miles per hour) and often associated with rough seas and stormy...

A scale for estimating wind speed based on observed conditions of the sea or land. It ranges from 0 (calm) to 12 (hurricane)...

The formation of fog when warm and moist air passes over a cool or cold surface or, conversely, when cold air passes over...

A sudden and rapid flow of snow masses accumulated on the slopes of mountainous areas under the influence of gravity or a...

Convection is the vertical movement of air caused by temperature differences, where warm air rises and cool air sinks. It...

A periodic cooling of sea surface temperatures in the central and eastern Pacific Ocean, often leading to altered global...

The heating of the Earth by the sun causes daily changes in both the direction and speed of the wind. During the day, ground...