Weather & Climate of Bueno Aires: Air masses and air movement!

Argentina is located at 34 degrees south latitude in a coastal climate; this creates a Cf climate or temperate coastal climate. Buenos Aires coastal mid-latitude location helps to create a fairly mild climate, as opposed to large seasonal swings in temperature of the Patagonia region further south. The location in the southern mid-latitude region is affected by a semi-permanent high pressure system which helps create a mild climate year round. The east coast warm Brazilian current also helps to regulate a temperate year round.

As the seasons change the air masses migrate north and south, this process helps drive weather patterns especially in the mid-latitudes (unfortunately the animation isnt working for some reason)

The battling of cold dry and warm moist air masses can create tornadoes near and around Buenos Aires. The Andes mountain range is very far west of Buenos Aires and provides little protection from poor weather. However the Andes are to the west and air is forced to extreme altitudes, this drys the air. As the air warms and moves across the continent a dry slot of air can form. This continental tropical dry air can move into an area of cooler polar air. Severe low depressions can happen in the mid-latitude region because of convergence of warm air into cold; this contributes to rising air and intensifies the low pressure in anti-cyclones (southern hemisphere) that can lead to tornados.

An extreme low depression forming, here comes a tornado!

Because Buenos Aires is located at a mid-latitude in the southern hemisphere the seasons are opposite and cold dry polar air from the south begins to migrate north in around March and April, this is the beginning of the fall season. As the cold dry air move north into regions of warm, moist, tropical air, this creates higher precipitation, similarly in spring when the warm moist air begins to move south and invade the cold polar air. As these air masses converge, anti-cyclonic systems form and move across the continent, moving clockwise in the southern hemisphere.

As the seasons begin to change the cold polar airmasses and warm moist tropical maritime airmasses collide and create higher precipitation in spring and fall.

The beginning of a cyclone. However this is a model of northern hemisphere air, southern hemisphere model would be opposite direction spinning clockwise around the low