why do we get rain when a front moves in?
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- Transcript: Transcript - Why does it rain? Frontal rain. Frontal rain occurs when two air masses meet. When a warm air mass meets a cold air mass, they don't mix as they have different densities (a bit like oil and water). Instead, the warm less dense air is pushed up over the cold dense air creating the 'front'. As a result, much like when air is forced up over mountains, the warm less dense air cools, and the water vapour condenses into water and falls as raindrops. This type of rain can happen anywhere in the UK. Orographic rain
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- A cold front develops when colder air moves into an area where  warmer air was. Usually when this happens rain or snow will  develop.
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What type of weather does a warm front bring? The warm front slopes gently up into the troposphere that has a direct bearing on the kinds of clouds that are produced. As the warm air behind the front collides with the cooler air ahead, the warmer less dense air is forced to glide upward. Warm front brings warm humid weather! Warm fronts usually pass with the coming of rain. After the rain pushes through, you're usually left with cooler weather. Hours if not days of wet weather (light precipitation). The air is warm and moist. a warm front has/brings nice warm weather Warm fronts most often bring cloud weather with light to moderate snow flurries or rain showers. Thunderstorms can occur, but not often.
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Weather Fronts cooler weather because the warm air is pushed away from the earth's surface Warm Front warm, less dense air moves over cold dense air and gradually replaces the cold air
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Weather and Climate Why does it rain so much near the equator? The equator receives the most sunlight out of any place on earth. This means that the level of the evaporation is higher and therefore there is more moisture in the air.
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Stationary Fronts If the wind direction changes the front will start moving again, becoming either a cold or warm front. Or the front may break apart. Because a stationary front marks the boundary between two air masses, there are often differences in air temperature and wind on opposite sides of it. The weather is often cloudy along a stationary front and rain or snow often falls, especially if the front is in an area of low atmospheric pressure.
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Science Chapter 1 Warmer water means more energy for a storm’s development. Storm systems create areas of low pressure, which cause large amounts of water to evaporate. This makes the air very humid. As the warm air rises, cooler air rushes in to replace it.
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- The region surrounding a stalled front will serve as a focus for showers and thunderstorms. A very large amount of moisture available in the atmosphere means that very heavy rain is possible in that activity, with the threat of flash flooding.
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- Most of the rainfall comes at these times because the tropical convergence of global winds and the wet conditions associated with them move north and south with the sun twice every year. The intervening dry seasons are due to the dry high-pressure belt associated with the deserts moving over the grassland area.
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What type of weather does a warm front bring? a warm front has/brings nice warm weather. Warm fronts most often bring cloud weather with light to moderate snow flurries or rain showers. Thunderstorms can occur, but not often. Before the warm front passes, the temperature is cool with significant precipitation (depending on geography) such as rain or snow or sleet. While the front passes, the temperature warms suddenly with light precipitation. Afterwards, the temperature remains warm with little or no precipitation and few clouds.
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- In a cold front cold air move through an air and forces the less dense warm air upwards. As the air rises it cools and moisture in it can condense. This can produce rain and c … louds and the energy released by the condensation is what can cause a thunderstorm.
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- Making the world better, one answer at a time. Precipitation (aka rain) is related to temperature change because in order for it to rain, the temperature needs to rise for water to evaporate and create rain clouds. The same raise in temperature results in condensation.
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Severe Weather 101 A gust front is the leading edge of rain-cooled air that clashes with warmer thunderstorm inflow. Gust fronts are characterized by a wind shift, temperature drop, and gusty winds out ahead of a thunderstorm. Sometimes the winds push up air above them, forming a shelf cloud or detached roll cloud.
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- The stuff in the water that turns it brown when it rains mostly comes down the rivers, not from the waves eroding the shores of the Sound. When there's a lot of runoff and the rivers are running high, sediment gets swept down from the vast amounts of land they drain, and carried down to the Sound--more than the waves on the Sound ever could dislodge, even in the wildest of storms and the highest of tides.
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Monsoon This is the reason why the summer monsoon forms the rainy season in many tropical areas. In the late fall and early winter, the situation is reversed. Land surfaces cool off quickly in response to cooler weather, but the same property of water that makes it slow to absorb heat also causes it to cool slowly.
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- This is because when air hits a mountain, the air is forced upwards. Upward-moving air cools, and if this cooling is great enough, the air will cool to the point where it cannot hold any more water vapor. This water vapor then condenses, and falls as rain or snow.
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- A sudden change in wind direction is commonly observed with the passage of a cold front. Before the front arrives, winds ahead of the front (in the warmer air mass) are typically out of the south-southwest, but once the front passes through, winds usually shift around to the west-northwest (in the colder air mass).
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Patterns of climate After precipitation, the air mass is dry and flows down the opposite side of the mountain. This dry air heats up as it descends down the leeward side (the side shielded from the wind) of the mountain. This is called a rain shadow effect. It is on this side of mountains that desert climates are often found.
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Article:               Why does it rain? Print When water becomes warm enough, it evaporates as vapor into the air. When a mass of air quickly cools to its saturation point, the water vapor condenses into clusters of tiny water droplets and frozen water crystals. We call these clusters clouds. Over time, the droplets and crystals that make up a cloud can attract more water to themselves. When water droplets grow heavy enough, gravity pulls them down as raindrops. If the air is cold enough, the ice crystals can remain frozen and grow large enough to fall as snow, sleet, freezing rain or hail. Credits: Answered by: Discovery Channel
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Should the NHS pay for cosmetic surgery? Health Secretary Jeremy Hunt has called for an end to NHS-funded cosmetic surgery stating that public money should not be spent on improving someone’s looks. According to the Government Online website, Mr Hunt told a press gallery lunch in parliament recently: “We should not be doing cosmetic work on the NHS.
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Why does it always rain during the summer? Then clouds form. There are all kinds of reasons why air rises. Pressure differences cause are to rise, topography (hills and mountains) cause air to rise, and of course heat. So if you have a front approaching bringing rain and it is summer you should have worse weather in the afternoon than you would at night.
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Stationary Fronts Because a stationary front marks the boundary between two air masses, there are often differences in air temperature and wind on opposite sides of it. The weather is often cloudy along a stationary front and rain or snow often falls, especially if the front is in an area of low atmospheric pressure.
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- Understand how rain works and why it so important to life here on Earth with our fun rain facts for kids. Rain falls from clouds in the sky in the form of water droplets, this is called precipitation. Water can also fall from the sky in the form of hail, sleet or snow. Rain is an important part of the water cycle.
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The Science of Air Masses: What happens when air masses collide? The leading edge of a warm air mass advancing into a region occupied by a cold air mass is called a warm front. A cold front occurs when a cold air mass advances into a region occupied by a warm air mass. If the boundary between the cold and warm air masses doesn't move, it is called a stationary front. The boundary where a cold air mass meets a cool air mass under a warm air mass is called an occluded front.
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1.2.2 Cold fronts A cold front occurs at the leading edge of a cold air mass that is moving to replace a warmer air mass. Diagram showing a cold air front. The cold air mass is moving to replace the warmer air mass and at the boundary a cold front forms. These different air masses do not mix because they have different temperatures and densities. As the cold front develops the warm air ahead of the front is pushed up over the top of the cold air. This happens because the warm air is lighter (less dense) than the cold air. You often see clouds forming at a cold front. This is because as the warm air rises, it cools and moisture in the air condenses. Clouds are masses of cool, condensed air. Fronts can be several hundred kilometres in width. The air behind a cold front is cooler than the air in front of it. If a cold front passed overhead when you were standing outside, then you would feel the air cooling down. The air would also be dryer than before. The weather maps below will help you understand how to recognise a cold front.
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Weather fronts Warm fronts are often coloured red. The presence of a warm front means that warm air is advancing and rising up over cold air. This is because warm air is 'lighter' or less dense, than cold air. Warm air is replacing cooler air at the surface. The edges of the 'suns' indicate the direction of movement of the warm air.