Rain and Flooding

Little rain can be caused by factors such as high pressure systems, which can inhibit the formation of rain clouds and block moisture from reaching an area. Additionally, geographical features such as mountains or deserts can create rain shadows, where moist air is forced to rise and release precipitation on one side, leaving the other side relatively dry. Climate change can also contribute to changing weather patterns that result in decreased rainfall.

A flood plain is an area of low-lying land adjacent to a river, stream, or other water body that is prone to flooding. These areas are typically covered by water during times of heavy rain or snowmelt, and are important for maintaining natural ecosystems and managing flood risk.

On average, the size of a rain drop is 0.1-0.5mm. The size of a rain drop depends on the amount of water in an area together. For example, if there are a large number of water drops in a small area and they collide, they would then join together and become a bigger droplet. If they get too big, then then would split into yet another drop.

A rain check is a ticket given to someone when an event or activity is canceled due to rain or unfavorable conditions. It allows the person to attend or participate in the event on another day in the future. Figuratively, it can also mean postponing or rescheduling an offer or invitation.

There is no satisfactory technique for anticipating the occurrence of cloud bursts because of their small scale. A very fine net work of radars is required to be able to detect the likelihood of a cloud burst and this would be prohibitively expensive. Only the areas likely to receive heavy rainfall can be identified on a short range scale. Much of the damage can be avoided by way of identifying the areas and the meteorological situations that favour the occurrence of cloud bursts.

Approximately 78% of precipitation falls back onto land, with the remaining 22% falling on oceans, lakes, and rivers. This cycle of water is vital for sustaining life on Earth and ensures that fresh water is available for various ecosystems and human use.

Normal rain is slightly acidic, with a pH around 5.6 due to the natural presence of carbon dioxide in the atmosphere. Acid rain, on the other hand, has a lower pH (below 5.6), caused by pollutants such as sulfur dioxide and nitrogen oxides reacting with water in the atmosphere.

Water is a simple chemical molecule, formed from the union of two atoms of hydrogen and one of oxygen. Both these elements (H & O) are quite reactive, and their combining into a molecule is not surprising.

Much water lies frozen in space, in comets, and in particular in the Oort Cloud. Undoubtedly some of Earth's early water came from this source.

The Boscastle flood of 2004 caused significant environmental damage, including erosion of riverbanks, destruction of habitats, pollution from debris and chemicals, and disruption of ecosystems. Some areas experienced loss of wildlife and vegetation, impacting biodiversity and the overall health of the ecosystem in the long run. Recovery efforts focused on restoring habitats and improving flood defences to mitigate future damage.

Convectional rain occurs in the summer because of the intense heating of the Earth's surface, especially in the afternoon. The heated air rises, cools, and condenses to form clouds, eventually leading to rain showers. The summer season typically experiences more intense heating, leading to stronger convection currents and higher chances of convectional rain.

It depends on the period of time you are talking about. For an annual rainfall, 147 mm would be considered arid. An area can have as much as 250 mm of rain a year and be considered a desert. 147 mm of rain in a day would be a major rainfall event witht he potential to caus flooding.

Property damages and number of deaths can be higher do to can water runoff is not being able to be controlled and managed. Concrete does not absorb the rain as soil does and there often are not streams or other running water sources to carry the water down stream.

It depends on many factors. In urbanised areas, the surface run off is increased due to more impermeable materials (tarmac as opposed to a field). These impermeable surfaces don't allow as much (sometimes any) percolation, infiltration etc to happen. This means that the water travels faster by surface run off, therefore increasing the volume of water in the river. Areas of high density rain often make the river exceed the carrying capacity, and if sediment etc is washed in, the competence can be exceeded as well which can cause a flood. More water on a surface leads to more water into rivers. Take Boscastle in Southern England. I live near to Boscastle and in 2004 it flooded very badly due to the geology of the area (the rock type was highly impermeable), the urbanisation of the area, the fact that there is a confluence of 3 rivers there. There was also a large about of localised rainfall in the area in the weeks before saturating the ground. Its usually due to urbanisation and geology. There's many reasons, often a combination of them. I do A-level Geography in Dorset, further studying it at university. It's rarely just one thing.

A lack of rain can be caused by various factors, including high pressure systems, a shift in wind patterns, or a lack of moisture in the atmosphere. Climate change can also contribute to altered rainfall patterns and prolonged dry spells.

A watershed is an area of land where all the water drains into a common waterway, such as a river, lake, or ocean. Annual rainfall affects a watershed by determining the amount of water that flows through it. Higher rainfall can lead to increased runoff and potential flooding, while lower rainfall can lead to drought conditions and reduced water availability in the watershed.

Rainwater can infiltrate underground through soil pores and cracks in rock formations. It can then percolate through soil layers until it reaches the water table, where it becomes groundwater. This process is part of the natural water cycle.

Rain typically falls vertically from the sky to the earth. The direction is influenced by gravity and wind patterns in the atmosphere.

if its rainy then they get 68 inches a year but if its not they get 49

Groundwater features include aquifers, which are underground layers of rock or sediment that hold water, and springs, which are points where water flows naturally to the surface. Other groundwater features can include water tables, which are the upper level of a saturated zone below the surface, and recharge zones, where water infiltrates into an aquifer.

They are all forms of precipitation, which is any form of water, liquid or solid, that falls from the atmosphere to the Earth's surface. Each type of precipitation forms under different weather conditions and temperatures.

The process is called the water cycle. It involves the continuous movement of water on, above, and below the surface of the Earth through processes like evaporation, condensation, precipitation, and runoff.

Extremely heavy rain is often referred to as a "deluge" or a "downpour." These terms are used to describe intense and continuous rainfall over a short period of time, typically resulting in flooding and potential damage.

One positive effect of a flood on a watershed is that it can replenish water levels in rivers, lakes, and aquifers, helping to restore the natural flow and balance of the ecosystem. Floodwaters can also deposit nutrient-rich sediment on floodplains, enriching the soil and supporting plant growth.

The most devastated areas included Brisbane and Ipswich; Rockhampton, which was completely swamped for many, many weeks; the Lockyer Valley, including the towns of Helidon, Grantham, Murphy's Creek, Gatton and Laidley; areas of the Darling Downs such as Dalby, Chinchilla, Condamine and St George and the southern Downs, including Warwick and Goondiwindi; parts of central Queensland such as Theodore, Taroom, Emerald and Bundaberg; and Toowoomba, up on the range, had a devastating flah flood race through it.

The intense drought conditions caused by lack of rain turned the topsoil to dust. When the soil dries out due to lack of precipitation, it loses its moisture and structure, becoming susceptible to erosion and turning into dust when disturbed by wind or other factors.