Anyone who lives on the coast, especially in areas where the relief of the coast plays a role, can be very familiar with these winds. Simply put, a storm wind in these areas can sometimes be thought of as a „sea breeze on steroids.“ Although different countries and regions have different definitions of what a storm wind is, using the Beaufort scale has obvious advantages: The strong and persistent storm winds we discuss in this article are persistent storm winds with gusts strong enough to cause significant structural damage and the ability to literally blow your feet. As we saw above, a storm wind is a strong, persistent wind that can last an entire day and make you jump out of your feet. Not only does it divide the different storm forces into 4 distinct categories, but each is clearly defined with its own description and associated land and sea conditions. Of course, winds from these wind speeds can be very dangerous and destructive. Therefore, with any storm forecast, it is normal for meteorologists to issue storm warnings. The word storm may come from old Norse galinn, which means „crazy,“ „hectic,“ or „bewitched.“ Weather forecasts sometimes use the term „gale winds“ to describe conditions that aren`t as extreme as hurricanes or tropical storms, but probably violent enough to tear your kite in half. Gale can also refer to other types of strong epidemics. For example, if someone bursts out laughing, it means that their girlfriend probably said something very funny. These visual alerts are triggered when winds blow over ten-minute periods at about 34-47 knots (39-46 miles per hour or 63-87 kilometers per hour).
Cape Town is just one example of this phenomenon occurring in coastal regions around the world. San Francisco is also famous for its strong storm winds during the summer months. Storm winds can begin to create moderately high waves, with breaking ridges forming rotational drifts, breaking tree branches and shaking cars on the road. The word gale is derived from the Middle English gale, a general word for wind of any force, even a breeze. This word is probably of North Germanic origin, related to the Icelandic gola (breeze) and the Danish gal (angry, crazy)[4], both from the Old Norse Gala (song), the Proto-Germanic *galaną (roop, song, charm), the Proto-Indo-European *ghel- (scream, scream, charm). An online etymology site suggests that the word scabies is derived from an earlier spelling, Gail, which is believed to be of uncertain origin. [5] A storm wind is therefore between 7 and 10 on the wind measurement scale created in the 19th century. A storm is a particularly strong and persistent surface wind in the range of 34 to 47 knots (39 to 54 miles per hour or 63 to 88 kilometres per hour) that occurs in coastal areas.
Different countries use different criteria to divide a storm into categories. As mentioned earlier, winds between 7 and 10 on the Beaufort scale, which indicate wind speeds between 50 and 102 km/h (32 to 63 mph), are considered storm winds. We also discussed how these winds are generated, briefly discussing the origins of the term to better understand its use. From time to time, strong and persistent winds can occur, making it difficult to stand. We have all experienced this. But what are these storm winds and what are their characteristics? These winds can sometimes occur without the presence of a strong weather system and can last a full day. You need to investigate further and find out what exactly these storm winds are to understand what causes them in the first place. The U.S. Weather Service also monitors the risk of storm wind events when their timing and location are still uncertain. On the contrary, winds are classified as storm winds mainly because of the speed at which they move.
(Not where they take place or how they are formed.) If a storm comes your way, you`d better hold on to your new hat and little dog Toto, because it`s an extremely strong wind. Other sources use minima as low as 28 knots (52 km/h; 14 m/s; 32 mph) and high maximums as 90 knots (170 km/h; 46 m/s; 100 mph). Until 1986, the National Hurricane Center used the term „storm“ to refer to tropical force winds for coastal areas between 33 knots (61 km/h; 17 m/s; 38 mph) and 63 knots (117 km/h; 72 mph; 32 m/s). The definition of 90 knots (170 km/h; 46 m/s; 100 mph) is very unusual. Another common definition of the maximum is 55 knots (102 km/h; 63 mph; 28 m/s). [2] Graph showing part of the Beaufort scale containing the 4 categories of storm winds (highlighted in red). Click on the image to see the full Beaufort scale. Storm winds can occur when very high and very low pressure systems are close to each other and the topography near the coast is favorable. The word „storm“ is derived from the Old Norse expression „gala“ (to shout). In central England, a storm meant any wind – hurricane force or breeze.
It also shows where storm winds are compared to other wind forces, which helps you see each type of wind in context. It is useful to assess the threat posed by a storm and accurately convey the relevant information to a third party familiar with this classification. A storm warning is a public warning from the national weather services. This leads to storm winds in some areas of the Cape Peninsula. It is not uncommon for winds to reach speeds of 120 km/h (75 mph). In the United States, a storm warning is a purely marine warning; The pure onshore equivalent is wind consulting. Typically, these strong winds are caused by a rapid drop in atmospheric pressure (indicated by a steep pressure gradient) and are usually associated with coastal regions. It should be noted that the U.S. National Weather Service classifies a storm as wind with speeds of 63 to 87 km/h (39 to 54 mph), so the classification of this type of wind can vary from region to region. As you may have concluded from this article, storm winds (or simply storms) are not winds specifically associated with a particular weather system.
These storm winds in coastal regions are mainly caused by 2 factors: Here too, a combination of relief and great contrast in sea and land temperatures is responsible for these strong winds. Especially in the San Francisco Bay Area, the wind passes through the Golden Gate, reaching storm speeds with gusts of up to 64 km/h (40 mph). A storm is a strong wind; The word is generally used as a descriptor in nautical contexts. The United States The National Weather Service defines a storm as persistent surface winds that move at a speed between 34 and 47 knots (63-87 km/h, 17.5-24.2 m/s, or 39-54 miles/hour). [1] Forecasters typically issue storm warnings when winds of this magnitude are expected. In the United States, a storm warning is specifically a marine warning; The terrestrial equivalent of the National Weather Service`s warning products is a wind warning. Thus, storm warnings are issued immediately when winds blow on average in the range of 30-52 knots (35-60 miles per hour or 56-96 kilometers per hour). As with most other weather phenomena, things are not as simple as the above definition suggests. There are actually a number of different weather factors and systems that can form storm winds in a variety of ways. Tropical storms, hurricanes and hurricanes illustrate this point very clearly. Depending on the strength of the low-pressure system, winds with storm force are reached very quickly and can accumulate quickly to reach hurricane force wind speeds. Wind is the result of air flow from a high-pressure area to low pressure.
This is the reason why there are almost always winds of varying strength around a low-pressure system. The original Beaufort wind scale of 1805 identifies four types of storm winds, from 7 to 10; Today, meteorologists identify a wind close to the storm at 7 and then storms in categories 8 and 9. The daytime display signal for a storm warning consists of two red pennants, and the night signal consists of white and red lights. Strong gusty winds are not uncommon and can be found in many large storm systems such as hurricanes, thunderstorms, and tornadoes. However, storm winds are not limited to large storm systems. A storm is therefore a rapid movement of air from an area of high pressure to an area of low pressure. However, storm winds are not only caused by storm systems. Sometimes, on a seemingly clear and pleasant day, you can suddenly be hit by winds that quickly accumulate at storm speeds. For example, in San Francisco, a light breeze that is smuggled and compressed between the hilly shores on both sides of the bay and across the bridge can create a storm wind.
A storm is more common in coastal areas, including but not limited to lakes, estuaries and inland seas. This sea breeze can sometimes turn into a storm that has winds in certain areas and under certain conditions. For example, Cape Town, South Africa, is known for its strong storm winds, which often occur during the summer months. After all, a storm wind at its peak creates large waves and huge patches of foam on the surface of the sea. The most common method for measuring wind strength is the Beaufort scale,[3] which defines a storm as a wind from 50 kilometres per hour (14 m/s) to 102 kilometres per hour (28 m/s). This is an empirical measure to describe wind speed, based mainly on observed sea conditions.
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