Air moves . a. cumuloaltus b. stratus . An early sign that the conditions might be right to form afternoon thunderstorms! Different cloud phenomenon (cloud formations) 1. The cloud droplets in a cloud are formed by water vapor molecules and: cirrostratus. These rare cloud formations are natural phenomena seen in the sky. They form as air is lifted to saturation over the top of mountains. Lenticular clouds are shaped like lenses or almonds or.flying saucers! Lenticular clouds indicate great instability in that layer of the atmosphere, and form in areas of mountain waves. Lenticular clouds indicate waves in the air flow caused by strong winds blowing across the range. POLAR LIGHT (AURORA) a. lenticular b. banner c. cap d. pileus e. mammatus. A)to the lee of mountains B)along coastlines C)over oceans D)in desert regions. According to meteorologists, lenticular clouds are formed when moisture driven by strong winds encounters a topographic barrier, such as a mountain, that forces it to condense into clouds. Moisture is forced out of the air into the form of a cloud as the air rises over the land feature and then returns back to the vapor form as the air descends down the other side. in Environmental & Atmospheric Sciences. (a) Why are lenticular clouds also called standing wave clouds (b) On which side of a mountain (windward or leeward) would lenticular clouds most likely form? Lenticular clouds ( Latin: Lenticularis lentil-shaped, from lenticula lentil) are stationary clouds that form mostly in the troposphere, typically in parallel alignment to the wind direction. Similar to how rainbows and moonbows form, rainbow clouds form when sun light passes small water droplets or small ice crystals in the clouds, refracting the light. The classic examples of these formations include Lenticular clouds and Rotor clouds (pictured below). Cloud streets. can create cumulus clouds. crates clouds that usually have the same height, regardless of time or place. A. Answer: Wind Speed Changing with height in conditionally unstable air. C. Following frontal passage when stratocumulus clouds form indicating mechanical mixing. The clouds form in the rising current on the upwind side of the wave crest and dissipate in the downward flow on the other side. Produced when a rotating column of air condenses, funnel clouds are the visible part of tornadoes that extend downward from the parent thunderstorm cloud. Cirrus Smooth, lens-shaped . All types of clouds are formed by these processes, especially altocumulus, altostratus, cirrocumulus, stratocumulus, or stratus clouds. Solutions for Chapter 6 Problem 18QR: (a) Why are lenticular clouds also called standing wave clouds? These formations are frequently caused by wave motions in the atmosphere, and are frequently seen in mountains or hilly areas. Basically, what you end up with is a rainbow within a cloud. This is why the clouds are called "standing". When arcus clouds move overhead, it can look like they're literally rolling over the ground below. Answer: Forced ascent of stable air along a warm front. Lenticular Cloud (as defined by NOAA) A very smooth, round or oval, lens-shaped cloud that is often seen, singly or stacked in groups, near or in the lee of a mountain ridge. It makes sense that it would be a "rough ride". 117 Steam fogs and frontal fogs are both types of _____ fogs. Lenticular clouds form when air flows over a topographical feature such as a mountain. Melina Grasso Show More Show Less 2 of 21. Winds meet at the center of the low pressure system and have nowhere to go but up. Clouds which have extensive vertical dimensions are often classified as: ". Since air cools as it rises and warms as it falls, lenticular clouds are most likely to form at the peak of a standing wave, where moisture condenses in the cooled air. Our final two cloud types will not help you predict the coming weather, but they do give a glimpse of the extraordinarily complicated motions of the atmosphere. As air flows around large surface features, wind velocity tends to increase, and in turn pressure and temperature decrease, causing a cloud to form. These clouds indicate moisture and temperatures will likely warm, as a warm front is often approaching. These clouds form in pockets of air trapped in the dips and valleys of mountainous terrain. Cloud Formation. lenticular clouds. . 5) Lenticular. In areas of low-level temperature inversion, frontal zones, and clear air turbulence. Our final two cloud types will not help you predict the coming weather, but they do give a glimpse of the extraordinarily complicated motions of the atmosphere. A lenticular cloud is a good "forecast indicator" as tall mountains accentuate incoming high-level moisture well ahead of an approaching front. They need a certain air current to form, and just the right. d. nimbostratus . In which situation is advection fog most likely to form? A species of cloud whose elements have the form of more or less isolated, generally smooth lenses or almonds. Altocumulus Lenticularis Clouds can form if stable, moist air collides with a large stationary object, such as a building or a mountain. Lenticular Clouds Page 001. This cloud resembles a lens and is typically positioned over a high hill or mountain. The cloud images show detailed structure and features.All of these pictures were taken in the local area around Plymouth, New Hampshire and most . . Where are lenticular clouds most likely to form? In the Boulder, Colorado area, the obstacle is the Front Range of the Rocky Mountains, seen at the bottom of the picture. Weather fronts, where two large masses of air collide at . The rising air expands and cools until it reaches it's dewpoint temperature and then, if there are tiny specks of dust in the air to trigger the condensation, droplets will form and you'l have a cloud there. Pilots tend to avoid flying near lenticular clouds because of the turbulence that is likely closer to the ground. Lenticular and lee wave clouds form downwind of an obstacle in the path of a strong air current. Clouds are one of the most incredible natural phenomena. Lenticular Clouds. Clouds also form when air is forced upward at areas of low pressure. Smooth, lens-shaped . 5) Lenticular. When arcus clouds move overhead, it can look like they're literally rolling over the ground below. Advection fog is most likely to form in coastal areas, with warmer air moving over the cold ground causing fog to form. C. a light breeze blowing colder air out to sea . Answer (1 of 2): Clouds form when humid air rises. Standing lenticular clouds are lens shaped clouds, hence their name. A type of arcus cloud, roll clouds are generally associated with the gust front of a thunderstorm. 6.4 Roll Clouds. So, you need rising air and some sort . Answer (1 of 2): When moist, stable air flows over a larger eddie, such as those caused by mountains, a series of large-scale standing waves form on the leeward side of the mountain. Answer: Stable air flowing over a mountain. Lenticular Clouds: Calm in Appearance, Dangerous in Reality. Lenticular Clouds "Lenticular clouds form due to the wind blowing across the top of a mountain at a pretty good speed. This interception of high-level moisture forms lenticular clouds, and as a result, they are a good warning sign of an approaching weather front and sometimes a big snowstorm. B. These clouds are a good indication of the presence of mountain waves but, if the air is dry, there may not be any cloud to see. The rising air expands and cools until it reaches it's dewpoint temperature and then, if there are tiny specks of dust in the air to trigger the condensation, droplets will form and you'l have a cloud there. They are most likely to form when the direction they are travelling is at a right angle in comparison to the direction of the wind. Good examples occur when moist winds blow in off the Pacific Ocean and encounter the Sierra Nevada in California. Lenticular clouds tend to form somewhere around 6500 feet to 16,500 feet. A funnel cloud is not a tornado if the circulation is not in contact with the ground. This leads to a stationary cloud even though the air is steadily flowing. They are often called "wave clouds". Nimbostratus. Which cloud type below would most likely form in an unstable atmosphere a. cumulonimbus b. stratus c. cirrostratus . Answer (1 of 2): Clouds form when humid air rises. It is worth noting that the word is also probably cognate with the Mycenean Greek word (u-ru-pi-ja-jo) which is, most likely, a term used to describe people, or possibly an ethnic group. In the Boulder area, the obstacle is the Front Range of the Rocky Mountains. A long snake-like lenticular cloud above Lake Tahoe at sunset on May 11, 2018. This is less likely compared to the reason most people buy into, that it was caused by over-pollution put into the air by the Siberian neighboring nation of Kazakhstan. Where are lenticular clouds most likely to form? A - A warm, moist air mass on the windward side of mountains. These clouds appear most often in formations of orographic origin, the result of lee waves, in which case they remain nearly stationary with respect to the terrain (standing cloud), but they also occur in regions without marked orography. The clouds dissipate in the downdrafts of the wave where the air has descended and warmed to the point where the moisture evaporates and is no longer visible. Winds meet at the center of the low pressure system and have nowhere to go but up. Visibility is decreased when stratus clouds are present and fog is likely to form. Unlike arcus clouds, however, roll clouds have a very long, tube-like shape. The clouds dissipate in the downdrafts of the wave where the air has descended and warmed to the point where the moisture evaporates . Stratus clouds are sheetlike clouds that are low in the sky (below 6,500 feet) and look like fog that hugs the horizon. Question. When stable air crosses a mountain barrier where it tends to flow in layers forming lenticular clouds. 12) (Refer to Figure 76) What is the minimum altitude/elevation of the area depicted by the blue line labeled V71? 6.4 Roll Clouds. Earth Observatory said, "Lenticular clouds are a type of wave cloud. general-geography; . cumulus. Creast of standing mountain waves may be marked by stationary, lens-shaped clouds known as . There are three types of Lenticular cloud, the lowest is Stratocumulus Standing Lenticularis found at 8000 feet, the most common seen is the Altocumulus Standing Lenticularis, found between 8000 to 20,000 feet high. Get solutions Get solutions Get solutions done loading Looking for the textbook? Wiki User 2017-02-07 02:06:38 . Here's a list of some of the most common cloud types you might spot in the sky: High Clouds (16,500-45,000 feet) . This occurs when stable, moist air flows over a mountain, creating a series of oscillating waves. Standing lenticular clouds. Lenticular Clouds over Plymouth, NH Plymouth State University Meteorology Program Cloud Boutique The Plymouth State Meteorology Program has developed this web page to provide explanations of and access to detailed pictures of some basic cloud forms. condensation nuclei. Nacreous clouds that form in the lower stratosphere sometimes have lenticular shapes. Match the cloud type with the mechanisms or condition that most likely formed it. So, you need rising air and some sort . Lenticular cloud formation. They are associated with waves in the atmosphere that form when moist air flow is forced up, over and partway down a mountaintop. mammatus clouds. Cloud formations directly downwind or above large terrain features will be turbulent. C - a lenticular cloud C - a lenticular cloud 3418. As damp air flows over mountain peaks, the waves of air carve out a pocket on the downwind side, and if the front side of that downwind . Even in the sky, we can see rare cloud formations and these sights keep us mesmerized, wondering how beautiful nature can be. Lenticular clouds (Altocumulus lenticularis, meaning "shaped like a lentil" in Latin) mostly develop among the crests and valleys of mountainous terrain. Clouds also form when air is forced upward at areas of low pressure. Unlike arcus clouds, however, roll clouds have a very long, tube-like shape. The most distinctive characteristic of the mountain wave is the lenticular cloud. A long snake-like lenticular cloud above Lake Tahoe at sunset on May 11, 2018. In the Boulder area, the obstacle is the Front Range of the Rocky Mountains. This snow was said to be oily to the touch and contained up to 4 times the normal level of iron. 81 T/F: Fog is simply a cloud with a base at or near the ground. Lenticular, or lee wave, clouds form downwind of an obstacle in the path of a strong air current. when in fact the strongest wave lift and sink occurs at a lower altitude where there isn't enough moisture to form the lenticular clouds. Lenticular. Standing lenticular clouds form in the crests of the mountain wave where the rising updraft of the wave has cooled and moisture has condensed. T/F: Lenticular clouds form most frequently on the windward sides of mountains. Lenticular clouds indicate . FALSE. This is one reason visualization is so . You're most likely to spot a lenticular cloud near hills or mountains. Weather fronts, where two large masses of air collide at . Lenticular. They are often comparable in appearance to a lens or saucer. Lenticular clouds form at the crest of the waves, where the air is coolest and water vapor is most likely . They usually form when a layer of air near the surface encounters a topographic barrier, gets pushed upward, and flows over it as a series of atmospheric gravity waves. Mt. . If the temperature at the crest of the wave drops below the local dew point, moisture in the air may condense to f. contrails. These mighty masses of liquid droplets and/or frozen crystals have been fascinating people from time immemorial. Like ocean waves, these waves of air bouncing over the mountains are anything but stable. Since air cools as it rises and warms as it falls, lenticular clouds are most likely to form at the peak of a standing wave, where moisture condenses in the cooled air. B - An air mass moving inland from the coast in winter. Lenticular Clouds (lens shaped clouds) can form in the crest of the mountain waves if the air is moist. B. Lenticular clouds occur in most parts of the world, and may form over quite small mountains. This is a "signpost in the sky" indicating that mountain wave activity is present. (b) On which side of a mountain (windward or leeward) would lenticular clouds most likely form? In a deep conditionally unstable or absolutely unstable environment, one may expect clouds to develop with A)to the lee of mountains. Lenticular- Lenticular clouds are clouds that form above mountains that have a lens and flying saucer shape. A halo around the Sun or the Moon indicates the cloud _____ is present. You would most likely expect a rainshadow on the: east side of the Cascade Mountains in the . Which cloud type is most likely to produce a brief yet intense period of precipitation? Lenticular clouds. Standing lenticular clouds form in the crests of the mountain wave where the rising updraft of the wave has cooled and moisture has condensed. cumulonimbus. Hood . You would expect vertical airflow in a cyclone to result in, A)divergence at the surface B)no cloud development C)divergence aloft Click to see full answer. Rainbow clouds tends to happen with altocumulus, cirrocumulus, lenticular and cirrus clouds. The funnel cloud is the visible portion of a tornado produced from clouds. Meteorologist Tim Ballisty tweeted a satellite image of the clouds over Dublin: 1 She'll be comin' round the mountain AlterYourReality /iStock. Thus, a wave cloud, or a series of lenticular clouds, is capable of forming. One of the most feared and easily recognized storm clouds is the funnel cloud. All types of clouds are formed by these processes, especially altocumulus, altostratus, cirrocumulus, stratocumulus, or stratus clouds. A rare or important fact or event or an extraordinary thing is known as a phenomenon. Mammatus clouds most frequently form on the underside of ____ clouds. A type of arcus cloud, roll clouds are generally associated with the gust front of a thunderstorm. It takes just the right mixture of moisture, temperature, and wind to make it possible for lenticular clouds to form. Lenticular Clouds are stationary and form in the Troposphere, perpendicular . They may be triggered off by hills only a few hundred metres high, and may extend downwind for over 100 KM The cloud elements form at the windward edge of . A lenticular cloud is a lens-shaped cloud that normally develops on the downwind side of a mountain or mountain range. environment, one may expect clouds to develop, but their vertical growth will be limited, and may observe: cumulus humilis (shallow cumulus) stratocumulus In an absolutely stable environment, no clouds will likely form. More rarely, they could be formed in plains when strong winds set up a cold front that acts as a form of barrier against moisture-laden air. steam fog is more likely to form during the ____ and advection fog in early ____ However, the most dramatic clouds are generated by the largest ranges, such as the Himalayas, Andes, and Rocky Mountains. nacreous clouds. As the wind blows against the mountains, it is forced upward and moisture condenses, forming a cloud that . 07. . Wind blows most types of clouds across the sky, but lenticular clouds seem to stay in one place. Altocumulus Lenticularis provides equal amounts of precipitation on both sides of a mountain range. Lenticular and lee wave clouds form downwind of an obstacle in the path of a strong air current. The lenticular cloud is one of the more unusual cloud types and is more common to those living out west, especially in the Rocky Mountains. In Homeric Greek . An adiabatic chart is a useful tool for determining: a station model. rarely leads to clouds forming above the top of the hill or mountain. in Environmental & Atmospheric Sciences. The lens-shaped lenticular cloud appears over the ridge and to the lee of mountain ranges. . castellanus clouds. . Roll Clouds can also occur in the rotors below the waves if the air is moist. But remember, not until the funnel reaches the ground or "touches down" is it called a tornado.