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# heavy rains or heavy rain

[139], The northern half of Africa is occupied by the world's most extensive hot, dry region, the Sahara Desert. [74], Once a cyclone occludes an occluded front (a trough of warm air aloft) will be caused by strong southerly winds on its eastern periphery rotating aloft around its northeast, and ultimately northwestern, periphery (also termed the warm conveyor belt), forcing a surface trough to continue into the cold sector on a similar curve to the occluded front. Between 1pm and 3pm, 1636 lightning strikes were counted across the country, with MetService warning there were more to come. [125], Cultural attitudes towards rain differ across the world. Flooding hits South Island during long weekend as waves can been seen on the road in Whangamata. [93] One millimeter of rainfall is the equivalent of one liter of water per square meter. Elita Chikwati. Precipitation generally increased over land north of 30°N from 1900 through 2005 but has declined over the tropics since the 1970s. [144][145] Similar, but weaker, monsoon circulations are present over North America and Australia. Around 40–75% of all biotic life is found in rainforests. [53] Savanna climates and areas with monsoon regimes have wet summers and dry winters. Changes in precipitation and evaporation over the oceans are suggested by the decreased salinity of mid- and high-latitude waters (implying more precipitation), along with increased salinity in lower latitudes (implying less precipitation and/or more evaporation). Rainfall gauges and the rain radar showed heavy downpours in the 36 hours up to midnight Saturday with a “significant number” of places recording 100 millimetres to 200mm in that period. Most temperate rainforests are located on mountainous west coasts between 45 and 55 degrees latitude, but they are often found in other areas. In certain conditions precipitation may fall from a cloud but then evaporate or sublime before reaching the ground. D Tropical rainforests occupy a large band of the planet mostly along the equator. [75] Banding within the comma head precipitation pattern of an extratropical cyclone can yield significant amounts of rain. [105] The following categories are used to classify rainfall intensity: Euphemisms for a heavy or violent rain include gully washer, trash-mover and toad-strangler. In areas with wet and dry seasons, soil nutrients diminish and erosion increases during the wet season. (Image: Getty Images) Sign up to receive two FREE daily bulletin e-mails, as well as breaking news as it happens R Nitric acid is produced by natural sources such as lightning, soil bacteria, and natural fires; while also produced anthropogenically by the combustion of fossil fuels and from power plants. Another round of heavy rains hit the valley. [169] There is likely to be rain of various compositions in the upper atmospheres of the gas giants, as well as precipitation of liquid neon in the deep atmospheres. Meanwhile, a slow moving rough was bringing heavy rain and thunderstorms to Bay of Plenty and Kawerau, with downpours of up to 40mm an hour possible. [16], In Hawaii, Mount Waiʻaleʻale, on the island of Kauai, is notable for its extreme rainfall, as it is amongst the places in the world with the highest levels of rainfall, with 9,500 mm (373 in). Convective precipitation falls over a certain area for a relatively short time, as convective clouds have limited horizontal extent. [142] Within Asia, rainfall is favored across its southern portion from India east and northeast across the Philippines and southern China into Japan due to the monsoon advecting moisture primarily from the Indian Ocean into the region. The term 1 in 100 year storm describes a rainfall event which is rare and which will occur with a 50% probability in any 100-year period. In the right conditions, some plants may recover with the rain hindering plant development. [27][28], The final droplet size distribution is an exponential distribution. [102] For instance, river flood control, sewer management and dam construction are all areas where planners use rainfall accumulation data. "What is a TROWAL? Emergency crews are currently responding to a large landslide that occurred above Beach Road. Annually, the rain belt within the tropics marches northward by August, then moves back southward into the Southern Hemisphere by February and March. 97-37 November 21, 1997: El Niño and California Precipitation. Emergency crews are currently responding to a large landslide that occurred above Beach Road. The front creates the portion of an occluded cyclone known as its comma head, due to the comma-like shape of the mid-tropospheric cloudiness that accompanies the feature. [104] If one wants an accumulated rainfall over a time period, one has to add up all the accumulations from each grid box within the images during that time. Distribution of Mesoscale Convective Complex Rainfall in the United States. [84] The humid subtropical climate zone is where winter rainfall is associated with large storms that the westerlies steer from west to east. {\displaystyle D+dD} [40] Hail becomes an increasingly infrequent occurrence when the freezing level within the atmosphere exceeds 3,400 m (11,000 ft) above ground level. "CHAPTER 9: Introduction to the Biosphere", "The sources and characteristics of atmospheric particulates during the wet and dry seasons in Hong Kong", "Seasonal Variations of Physico-chemical Characteristics in Water Resources Quality in Western Niger Delta Region, Nigeria", "Subject: D3) Why do tropical cyclones' winds rotate counter-clockwise (clockwise) in the Northern (Southern) Hemisphere? During the fall, winter, and spring, Pacific storm systems bring most of Hawaii and the western United States much of their precipitation. [23], Raindrops impact at their terminal velocity, which is greater for larger drops due to their larger mass to drag ratio. [129] Several cultures have developed means of dealing with rain and have developed numerous protection devices such as umbrellas and raincoats, and diversion devices such as gutters and storm drains that lead rains to sewers. [79] The pH of rain varies, especially due to its origin. Explore more on Heavy Rains. Partly as a result of this warming, monthly rainfall is about 28% greater between 32 to 64 km (20 to 40 mi) downwind of cities, compared with upwind. Conductive cooling occurs when the air comes into contact with a colder surface,[8] usually by being blown from one surface to another, for example from a liquid water surface to colder land. There was heavy flooding on portions of Route 95 in Cranston, Rhode Island. [32], Rain falling on loosely packed material such as newly fallen ash can produce dimples that can be fossilized, called raindrop impressions. [72] Rainbands associated with cold fronts can be warped by mountain barriers perpendicular to the front's orientation due to the formation of a low-level barrier jet. Coalescence generally happens most often in clouds above freezing, and is also known as the warm rain process. Adiabatic cooling occurs when air rises and expands. Find Heavy Rains Latest News, Videos & Pictures on Heavy Rains and see latest updates, news, information from NDTV.COM. [47], In South America, the Andes mountain range blocks Pacific moisture that arrives in that continent, resulting in a desertlike climate just downwind across western Argentina. Yes, heavy rains, tropical storms, and hurricanes can put a lot of stress on a home septic system. As a result, very cold climates see very little rainfall and are often known as polar deserts. Terrain is considered in QPFs by use of topography or based upon climatological precipitation patterns from observations with fine detail. Rainfall amounts can be estimated by weather radar. Coats had driven towards Piano Flat, north of the town, to check on water levels and it did not take long to realise they were in for heavy rain. [94], The standard way of measuring rainfall or snowfall is the standard rain gauge, which can be found in 100-mm (4-in) plastic and 200-mm (8-in) metal varieties. The major cause of rain production is moisture moving along three-dimensional zones of temperature and moisture contrasts known as weather fronts. [134] In his Meditations, the Roman emperor Marcus Aurelius preserves a prayer for rain made by the Athenians to the Greek sky-god Zeus. SINGAPORE - Road potholes have proliferated across the island after heavy rain in the last several weeks, raising concern among motorists and cyclists alike.. It rained heavy / heavily yesterday. [116] QPF can be generated on a quantitative, forecasting amounts, or a qualitative, forecasting the probability of a specific amount, basis. [126] Rain can also bring joy, as some consider it to be soothing or enjoy the aesthetic appeal of it. [25], Rain drops associated with melting hail tend to be larger than other rain drops. They were flown to Dunedin by helicopter about 10am. d All plants need at least some water to survive, therefore rain (being the most effective means of watering) is important to agriculture. Can we say 'The heavy rain has washed away the bridge' without changing the meaning of the sentence? [26], Intensity and duration of rainfall are usually inversely related, i.e., high intensity storms are likely to be of short duration and low intensity storms can have a long duration. ⟨ {\displaystyle n(d)=n_{0}e^{-d/\langle d\rangle }dD} "His cloak was wet due to the heavy rainfall/rains/rain" I agree with @AricFowler the definite article "the" is optional here. d [16] Water vapor normally begins to condense on condensation nuclei such as dust, ice, and salt in order to form clouds. This is termed virga and is more often seen in hot and dry climates. Some houses by the coast of Barangay Bus Bus were damaged by strong waves, prompting residents to evacuate. The globally averaged annual precipitation over land is 715 mm (28.1 in), but over the whole Earth it is much higher at 990 mm (39 in). d “As more debris continues to hit the log jam the impact is felt through the entire structure and the water level will need to drop before equipment can be brought in to begin to clear this.”. [89] Subarctic climates are cold with continuous permafrost and little precipitation. Elevated portions of weather fronts (which are three-dimensional in nature)[17] force broad areas of upward motion within the Earth's atmosphere which form clouds decks such as altostratus or cirrostratus. And Strong winds (=The strong wind?) Recent heavy rains have forced the department of employment and labour’s Free State offices to close temporarily.. [38][42] Graupel and hail indicate convection. Senior Reporter. A radar equation is then used, which is. "Heavy rain can trigger mudslides and debris flows in steep terrain, and the risk is higher in wildfire burn areas." Most precipitation in the tropics appears to be convective; however, it has been suggested that stratiform precipitation also occurs. The dew point is the temperature to which a parcel must be cooled in order to become saturated. Fire crews are on standby to pump water from Waimate's main street on Sunday afternoon. The heaviest rain is seen in reds and yellows. Heavy rain is causing widespread flooding, landslides and road washouts in Haines. In general, the word "rains" refers to multiple showers, while "rain" and "rainfall" … = Re: heavy rains, a heavy rain Well actually to be correct you should say: "The runoff from heavy rains washed away the bridge." Cherrapunji, situated on the southern slopes of the Eastern Himalaya in Shillong, India is the confirmed wettest place on Earth, with an average annual rainfall of 11,430 mm (450 in). It can also form due to the lifting of advection fog during breezy conditions.[19]. [51] The term green season is also sometimes used as a euphemism by tourist authorities. a heavy rain at 7.00, then another at 8.20, and still another at 10.00 ? As much as you are able, limit your water usage during heavy rain. Tropical cyclone rainbands contain showers and thunderstorms that, together with the eyewall and the eye, constitute a hurricane or tropical storm. Both tropical and temperate rainforests exist. The wet season is a time when air quality improves,[55] freshwater quality improves,[56][57] and vegetation grows significantly. “Driving conditions will also be hazardous with surface flooding and poor visibility in heavy rain.”. Precipitation, especially rain, has a dramatic effect on agriculture. A severe thunderstorm watch has been lifted after being in place for most of the country. [132] Various Native American tribes are known to have historically conducted rain dances in effort to encourage rainfall. As the ground surrounding your tank and drainfield absorbs the excess water, it makes it harder for water to flow out of your system. I think either singular or plural is OK here. Rainfall intensity is classified according to the rate of precipitation, which depends on the considered time. Across Asia, a large annual rainfall minimum, composed primarily of deserts, stretches from the Gobi Desert in Mongolia west-southwest through western Pakistan (Balochistan) and Iran into the Arabian Desert in Saudi Arabia. [63], Increasing temperatures tend to increase evaporation which can lead to more precipitation. [175] There is evidence from samples of basalt brought back by the Apollo missions that the Moon has been subject to lava rain. [78], The phrase acid rain was first used by Scottish chemist Robert Augus Smith in 1852. [120] Plants need varying amounts of rainfall to survive. [158] The wettest spot in Australia is Mount Bellenden Ker in the north-east of the country which records an average of 8,000 mm (310 in) per year, with over 12,200 mm (480.3 in) of rain recorded during 2000. [160] Mount Waiʻaleʻale on the island of Kauaʻi achieves similar torrential rains, while slightly lower than that of the Big Bog, at 9,500 mm (373 in)[161] of rain per year over the last 32 years, with a record 17,340 mm (683 in) in 1982. After an influx of people into Waikaia for Christmas, the northern Southland township was nearly deserted again. Its summit is considered one of the rainiest spots on earth, with a reported 350 days of rain per year. [88] A steppe is a dry grassland. Huge storm cloud looming over Timaru Saturday evening. Africa and parts of Otago and motorists were urged to check conditions before anywhere... As it had in the areas where planners use rainfall accumulation data your green tree thrives in. Have adaptation and survival strategies for the wetter regime near Whakatāne, between Kutarere and.... The cyclone 's intensity have missed the word  to '': to. Dew point is the tundra which has a dramatic effect on agriculture temperature dependent as... 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