Isobars. You can also determine wind direction by using isobars. These are lines on a map that connect points with the same atmospheric pressure. The wind moves counterclockwise around the low-pressure area (L) and clockwise around the high-pressure area (H).
How do you find the wind speed and direction on a weather map?
Find a wind barb that has a circle and a line extending out from the circle. This shows both the wind’s direction and its speed. The line will be topped by other lines. A short line means that the wind is blowing at a speed of five knots (a knot is equal to 1.5 miles per hour).
How is wind speed represented on a weather map?
Wind speed. A combination of long/short barbs and pennants indicate the speed of the wind in station weather plots rounded to the nearest 5 knots. … One long barb is used to indicate each 10 knots with the short barb representing 5 knots. At 50 knots, the barbs changes to a pennant.
How do you tell wind direction from weather?
Wind direction is defined as the direction the wind is coming from. If you stand so that the wind is blowing directly into your face, the direction you are facing names the wind. That’s why a north wind generally brings colder weather temperatures to Chicago and a south wind implies a warmup.
How do you determine wind speed?
Wind speed is measured using an anemometer and is given in miles per hour or knots. Its direction is determined from a weather vane or windsock and is expressed in terms of the direction from which it blows. For example, if winds are blowing from the north to the south they are said to be northerly, or from the north.