How much mm rainfall is normal?
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. Very heavy rain: Greater than 8 mm per hour.
What is the highest mm of rain?
Climate and rainfall Mawsynram receives over 10,000 millimeters of rain in an average year, and the vast majority of the rain it gets falls during the monsoon months. A comparison of rainfalls for Cherrapunji and Mawsynram for some years is given in Table 1. Mawsynram receives the highest rainfall in India.
What is a good amount of rainfall per year?
State-wide averages of annual rainfall plus snowfall range from a high of 63.7 inches (1618 millimetres) in Hawaii to a low of 9.5 inches (241 millimetres) in Nevada. For the entire United States, excluding Hawaii and Alaska, the average amount of moisture falling as rain and snow is 30.21 inches (767 millimetres).
How do you calculate rainfall range?
From our list of scores we can see that the highest average monthly rainfall was 715 millimeters and the lowest recorded average was 100 millimeters so the range is calculated using 715 minus 100 which equals 615. Therefore put simply, the formula or rule for finding the range is highest score minus lowest score.
What is considered heavy rainfall?
Rainfall intensity is classified according to the rate of precipitation, which depends on the considered time. Heavy rain — when the precipitation rate is > 7.6 mm (0.30 in) per hour, or between 10 mm (0.39 in) and 50 mm (2.0 in) per hour. Violent rain — when the precipitation rate is > 50 mm (2.0 in) per hour.
What is the highest amount of rainfall in one day?
Greatest rainfall in 24 hours The biggest rainfall in a day occurred with the passage of Cyclone Denise in Foc-Foc, La Réunion, an island in the southern Indian Ocean. Some 1.825 meters (71.8 inches) of rain fell over 24 hours, from January 7 to 8, 1966.
What is considered high rainfall area?
Coastal belt
Coastal belt: The coastal belt receives the most rainfall in NSW (800 – 3000 mm per year). The Northern coastal regions, from Lismore to Newcastle, receive the most rainfall, but the whole of the coastal region is a relatively high rainfall area.
What is considered low yearly rainfall?
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 rainfall is more than 0.30 inches of rain per hour.
How do you calculate mean rainfall?
Add together all of the monthly rainfall totals in your sample data. You’ll be adding measurements in inches because rainfall is generally measured in inches in the United States. Divide by the number of years in your data set to arrive at the average monthly rainfall for any location.
How do you calculate annual rainfall?
(i) Annual rainfall = Sum of rainfall in all twelve months. Therefore, annual rainfall is 129.2 cm. The total annual rainfall = Sum of rainfall in all twelve months.