The different types of precipitation are:
- Rain. Most commonly observed, drops larger than drizzle (0.02 inch / 0.5 mm or more) are considered rain.
- Drizzle. Fairly uniform precipitation composed exclusively of fine drops very close together.
- Ice Pellets (Sleet)
- Hail.
- Small Hail (Snow Pellets)
- Snow.
- Snow Grains.
- Ice Crystals.
The wettest month on record remains May 2015, with 4.44 inches, according to scientists at NOAA's National Centers for Environmental Information. Soggy conditions from June 2018 through May 2019 led to the wettest 12-month period on record in the U.S., with 37.68 inches, 7.73 inch above average.
It is defined as rainfall greater than 100 mm in 24 hours.
1mm rainfall means every one square meter area is filled with the water of height 1mm. So 1mm rain means 1000mm length × 1000mm breath × 1mm height = 1litre of water.
Rainy season always comes after summer season because , during summer there is a lot of water loss due to sweating by humans and transpiration by plants due to excessive heat. This increases the amount of moisture and humidity in the atmosphere which ultimately results in rainfall.
10 mm rainfall means that if rainfall fell on a flat land surface , with no slope ,no evaporation, and no percolation of water I.e. water does not go underground, then the amount of rainfall would be 10 mm measured from the ground. Now this is practically not possible ,so ideally rain gauge is used to measure rainfall.
Rain is a major component of the water cycle and is responsible for depositing most of the fresh water on the Earth. It provides suitable conditions for many types of ecosystems, as well as water for hydroelectric power plants and crop irrigation.
Usually, the term monsoon is used to refer to the rainy phase of a seasonally changing pattern, although technically there is also a dry phase. The term is sometimes incorrectly used for locally heavy but short-term rains. The major monsoon systems of the world consist of the West African and Asia-Australian monsoons.
Summer corresponds with the Wet season and winter with the Dry season. Hluhluwe-iMfolozi has a sub-tropical climate. The wet summer months (October to April) are hot and humid. Dry winters (May to September) are pleasantly warm.
Countries and regions with a savannah rainy season
| Country | Savannah Rainy Season |
|---|
| Ethiopia | June - September |
| Botswana | December - March |
| Florida (USA) | May - October |
| Nigeria | April - October |
Several countries experience four seasons but countries that are closest to the equator and those found on the North and South Pole will experience only two seasons – like wet and dry seasons. Countries that are known to have this kind of seasons are Cambodia, Australia, Philippines and some countries in Africa.
There are only 2 seasons: wet season (summer) and dry season (winter). Usually the dry season is longer. During the dry seasons plant life and animal life suffers, but as the rainy season begins life flourishes in this area. This climate is caused by changing wind and ocean currents.
The wet season, monsoon season or rainy season is the time of year when most of a region's average annual rainfall occurs. It usually lasts one or more months. The term "green season" is also sometimes used as a euphemism by tourist authorities.
Wet season –October to MayThe 'short rains' and the 'long rains' are separated by a drier couple of months in January and February. Road conditions are at their worst in April and May. October, November & December – October usually signals the beginning of the rains. November is one of the wettest months of the year.
Near the Earth's equator, solar heating is intense year round. The Sun heats the ocean, evaporating tremendous amounts of water. As air rises, it cools, and water vapor condenses into rain. This daily cycle of heating, evaporation, and convection creates a persistent band of showers and storms around Earth's middle.
(Also called rain forest climate.) A climate with vegetation of the rain forest type.
Every day the hot, humid air rises off the ground and collides with cooler air above and turns into rain. In the afternoons on the summer savanna the rains pour down for hours. African savannas have large herds of grazing and browsing hoofed animals.
n a heavy rainSynonyms: cloudburst, deluge, pelter, soaker, torrent, waterspout Type of: rain, rainfall.
Rainfall rate is generally described as light, moderate or heavy. Light rainfall is considered less than 0.10 inches of rain per hour. Moderate rainfall measures 0.10 to 0.30 inches of rain per hour.
Heavy (thick) drizzle: Impairs visibility and is measurable in a raingauge, rates up to 1 mm per hour. Slight rain: Less than 0.5 mm per hour. Moderate rain: Greater than 0.5 mm per hour, but less than 4.0 mm per hour. Heavy rain: Greater than 4 mm per hour, but less than 8 mm per hour.
When little or no rain falls, soils can dry out and plants can die. When rainfall is less than normal for several weeks, months, or years, the flow of streams and rivers declines, water levels in lakes and reservoirs fall, and the depth to water in wells increases.
The Small Rain is a semi-autobiographical novel by Madeleine L'Engle, about the many difficulties in the life of talented pianist Katherine Forrester between the ages of 10 and 19. L'Engle began work on it in college, and completed it while an actress in New York.
For this particular event, though, and given the particular antecedent conditions, we come up with the following ratios. For Falls Lake, we saw about a 2.6 inch rise for each inch of rain.
Volume and weightOne inch of rain falling on 1 acre of ground is equal to about 27,154 gallons and weighs about 113 tons.
Spring is the rainiest season of the year as measured by the number of days with precipitation. During spring, the best precipitation dynamics of winter and summer converge. Not surprisingly, this abundance of atmospheric energy and moisture is why the peak of the severe weather season occurs in spring.
The coldest average temperatures of the season are typically experienced in January or February in the Northern Hemisphere and in June, July or August in the Southern Hemisphere.
The number of days each month with rain, snow and hail in New York, United States of America. * Data from weather station: New York, United States of America. On average, May is the most rainy. On average, September has the least rainy days.
State-wide averages of monthly precipitation in fall range from a high of 5.23 inches (133 millimetres) in Hawaii to a low of 0.76 inches (19 millimetres) in Nevada. For the entire United States, excluding Hawaii and Alaska, the average amount of moisture falling as rain and snow is 2.42 inches (61 millimetres).
Climate
| Seasons | Month | Climate |
|---|
| Winter | December to January | Very Cool |
| Spring | Feburary to March | Sunny and pleasant. |
| Summer | April to June | Hot |
| Monsoon | July to Mid-September | Wet, hot and humid |
