Simple Definition of Westerlies
Westerlies or the Anti-trades are the prevailing winds that flow from the sub-tropical temperate zone to the sub-polar temperate zone. They are limited to the middle latitudes only, that is, between 30° to 60°.
Predominantly, these winds blow in a fixed direction;
- In the Northern Hemisphere, they blow from the southwest.
- In the Southern Hemisphere, they blow from the northwest.
The westerlies are specifically strong in the Southern Hemisphere, earning the name of the ‘Brave West Winds’. This is because in areas where the land is absent, the wind flow is less interrupted and hence, the westerlies are stronger here.
The westerlies are responsible for being the carriers of the equatorial winds and waters to the western coasts.