Excellent work. Please help us continue to provide you with our trusted how-to guides and videos for free by whitelisting wikiHow on your ad blocker. AcuRite weather stations display this information using a 16 point wind rose (pictured on right). By using this service, some information may be shared with YouTube. % of people told us that this article helped them. The way in which the semi-circles and triangles point shows the direction in which the front is moving. All you need is a Rose of the Winds and a good memory. Is that correct? Some people feel anxious at sea. Wind SpeedWhen winds are 2 mph or less, a small open circle is used. Two full lines in parallel would represent 20 knots (23.02 mph) of wind speed. The result is that an east wind, for example, would cause a balloon to follow a westerly bearing, and regarding your specific example Wind: S 5-10 mph would indicate a wind … ", "Reading the barbs was simple and super easy to understand.". This article has been viewed 101,904 times. This is opposite of what a typical weather vane shows, because they point into the wind, rather than the direction it is headed. If the wind arrow is pointing outward between the "E" and "S" directional markers, the wind is coming from the southeast. Please consider making a contribution to wikiHow today. a southerly wind is a wind blowing from the south. Just like a map or a compass rose, a wind barb plot is typically drawn with north at 0° and south at 180°. Feathers and pennants are combined to denote various wind speeds. Will they be seasick? They join together places with the same mean sea level air pressure (weight per square area of air above). Jet Stream. In terms of the wind direction, in the northern hemisphere air moves around high pressure in a clockwise direction and low pressure in an anticlockwise direction, so isobars on a weather map indicate the direction and speed of the wind as well as the pressure. The barb always points in the direction from which the wind … Wind barbs can also be helpful to mariners navigating the seas. Bess Ruff is a Geography PhD student at Florida State University. This article was co-authored by Bess Ruff, MA. Current WInds. Three black triangles, two full lines, and one half line would represent 175 knots (201.39 mph). A fully blackened triangle, "pennant," or "flag" on the barb represents 50 knots (57.50 mph) of wind speed. Weather maps are all different but, usually, the wind direction is shown as an arrow pointing in the direction the wind is going to. By signing up you are agreeing to receive emails according to our privacy policy. The forecast wind speed and direction is displayed on a national map. She received her MA in Environmental Science and Management from the University of California, Santa Barbara in 2016. In order to read wind barbs, you'll need to learn what the various lines and measurements mean. Where a cold front and warm front meet an occluded front is created, shown by lines with overlapping semi-circles and triangles. One full line and one half line would represent 15 knots (17.26 mph). Wherever you are boating in the world I am sure you will be using a pilot guide to aid your navigation. The pointed tip of the wind arrow points into the wind. Wind barbs are the most visible portion of a station plot. (Credit: West.) In a more detailed weather report, wind direction and speed are shown using a symbol called a wind barb. Maps have details of places, topography, etc, while charts have basic features only. Every day at wikiHow, we work hard to give you access to instructions and information that will help you live a better life, whether it's keeping you safer, healthier, or improving your well-being. Wind direction is reported by the direction from which it originates. To read wind barbs, align the wind barb so north is pointing straight up, and look at the barb vector, which should have an arrow point on one end and feathers or barbs on the other. Take a "Northerly" wind, for example. Keep reading to learn tips from our reviewer on how to convert wind speed from knots! The angle of the barb vector shows the direction the wind is blowing, with the barbed end pointing to where the wind comes from, and the arrow pointing to where the wind is going. The largest indicator shows the current wind direction, and two smaller indicators show the last two wind directions detected. Keep reading to learn tips from our reviewer on how to convert wind speed from knots! Read the wind direction. The arrows indicate the direction the wind is going based on North being at the top of the screen and West being at the left. Weather charts depicting outlines of countries or states are used for weather depictions, including wind barbs. . References Black lines with no semi-circles or triangles are troughs and show areas where the air is unstable and showers tend to form. Wind is typically displayed on weather maps using wind barbs. Your support helps wikiHow to create more in-depth illustrated articles and videos and to share our trusted brand of instructional content with millions of people all over the world. Include your email address to get a message when this question is answered. Each full line equals 10 knots (kts) and a smaller half-line is 5 kts. We know ads can be annoying, but they’re what allow us to make all of wikiHow available for free. Remember, winds are identified as the direction ... www.jsu.edu Note that the wind is always named from the direction it comes from. Rewiring a boat – overcoming the challenges involved, A simple guide to understanding tides when passage planning, Pleasure craft safety equipment recommendations, An explanation of the IALA maritime buoyage systems – IALA A and IALA B, Passage Planning Advice & Safety for skippers, VHF DSC radio – how best to communicate at sea, Essential yacht tender safety for skippers and crew, Rig check – how to prevent failure at sea, Know your Navlights & Shapes – essential for all skippers, How to predict wind direction and strength by reading a weather chart, Anchoring – getting it right is not always straightforward, Safety Briefings – leave nothing to chance, Always have an emergency grab bag to hand when at sea…. So, 0-2kts wind speed rounded to 0kts, 3-5kts rounded to 5kts. You can broadly interpret wind strength and direction from these maps. It helped, as I was always confused about it. Based on the directional markers on the vane, deduct where the wind arrow points according to the four cardinal directions. The shaft will point to the direction FROM which the wind is blowing. Wind barbs are simple visual presentations of wind speed from a given direction. 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