Table of Contents
Is 10 mm of rain in 24 hours a lot?
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. Moderate shower: Greater than 2 mm, but less than 10 mm per hour. Heavy shower: Greater than 10 mm per hour, but less than 50 mm per hour.
How do you calculate rainy days?
Number of raining days = -25.79 * ln (0.522) + 5.562. Doing the math gives Raining Days = 22.4, or, you might use 23, since raining days should be an integer– if it rained part of a day, it rained that day.
What is Rainy Day?
Definition of rainy day : a period of want or need saving for a rainy day.
What does mm rainfall mean?
The most common rainfall measurement is the total rainfall depth during a given period, expressed in millimeters (mm). For instance, we might want to know how many millimeters of rain fell over the course of 1 h, 1 day, 1 month, or 1 year.
How the rainfall is measured in mm?
Instruments. The standard instrument for the measurement of rainfall is the 203mm (8 inch) rain gauge. This is essentially a circular funnel with a diameter of 203mm which collects the rain into a graduated and calibrated cylinder. The measuring cylinder can record up to 25mm of precipitation.
How much rainfall in percentage occurs during a rainy day?
According to India Meteorological Department (IMD), a rainy day has been defined as a day with rainfall of 2.5 mm or more rainfall. IMD further defines that rainfall for a station is called heavy if it is greater than 650 mm and very heavy if it is greater than 1300 mm.
Is it rainy or raining?
Raining is a verb, describing the action of rain. It’s rainy today. Rainy is an adjective, describing what the weather is like today.
What is the meaning of Rainy Day in India?
, Trying to understand problems of India. According to India Meteorological Department (IMD), a rainy day has been defined as a day with rainfall of 2.5 mm or more rainfall. IMD further defines that rainfall for a station is called heavy if it is greater than 650 mm and very heavy if it is greater than 1300 mm.
How do you calculate the rate of rainfall on average?
So if you had 600 mm monthly average RF in May with 20 rainy days and 11 dry days, take 600 mm/ (20 days * 24 hours) = 0.8 mm/hour average monthly RF intensity. If the rainfall is 20 mm, then multiply the volume by 20. If you have mm of rainfall recorded every day or any time steps, then your rate of rainfall is mm/day or mm/ (recording interval).
How much is 1 mm of rain per square metre?
In an area of 1 square metre, 1 m of rain will mean 1000 litres. Since 1 m equals 1000 mm, 1 mm of rain is 1 litre per square metre. Notice that 1 litre is 0,001 cubic metres, this means “1 litre per square metre” can be written as 0.001 m^3 / 1 m^2, which can be simplified to 0.001 m, which is 1 mm.
What is the highest 15 minute rainfall intensity in Nigeria?
If rainfall in tipping bucket standard gauge was recorded every 15 minutes, and the highest 15 minute value was 12 mm, the highest 15 minute intensity has a rate of 48 mm/hour. Nigeria Maritime University, Okerenkoko, Delta State, Nigeria.