What is a westerly wind direction?
The westerlies, anti-trades, or prevailing westerlies, are prevailing winds from the west toward the east in the middle latitudes between 30 and 60 degrees latitude. They originate from the high-pressure areas in the horse latitudes and trend towards the poles and steer extratropical cyclones in this general manner.
A true, classic north westerly wind brings polar maritime air towards the UK. This is an air mass that has polar origins, yet has travelled over the mid-Atlantic. So it is cold, but has been warmed from below by the relatively warm Atlantic Ocean. However, this week's mild air has a very different origin.
- The polar easterlies (also known as Polar Hadley cells) are the dry, cold prevailing winds that blow from the high-pressure areas of the polar highs at the North and South Poles towards the low-pressure areas within the westerlies at high latitudes.
- Weather radar, also called weather surveillance radar (WSR) and Doppler weather radar, is a type of radar used to locate precipitation, calculate its motion, and estimate its type (rain, snow, hail etc.).
- A north wind is a wind that originates in the north and blows south. The north wind has had historical and literal significance, since it often signals cold weather and seasonal change in the Northern hemisphere.
These instruments point into the wind so they would point north during a north wind. Likewise, winds don't have to come directly from the north, south, east, or west. The winds can also come from the northwest or southwest, which means that they blow toward the southeast and northeast respectively.
- Beaufort Wind Scale
0 --- Calm less than 1 mph (0 m/s) 3 --- Gentle breeze 8 - 12 mph 3.5-5 m/s 4 --- Moderate breeze 13 - 18 mph 5.5-8 m/s 5 --- Fresh breeze 19 - 24 mph 8.5-10.5 m/s 6 --- Strong breeze 25 - 31 mph 11-13.5 m/s
- Wind speed, or wind flow velocity, is a fundamental atmospheric quantity. Wind speed is now commonly measured with an anemometer but can also be classified using the older Beaufort scale which is based on people's observation of specifically defined wind effects.
- Wind direction is the direction from which the wind is blowing; the direction from which the air is moving. It is not the direction the wind is blowing toward.
Updated: 3rd October 2019