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Question

Rainfall with an intensity of 6 mm/h is classified as:

The correct answer is

moderate rain

Rainfall Intensity Classification

Rainfall intensity refers to the rate at which rain falls, typically measured in millimeters per hour (mm/h). This measurement helps in classifying different types of rainfall, which is important for various applications like hydrology, agriculture, and urban planning.

Classifying Rainfall Intensity

Meteorologists classify rainfall into different categories based on its intensity. These classifications are commonly defined by specific ranges of rainfall rate. Here's a general classification:

Rainfall Classification Intensity Range (\( \text{mm/h} \))
Trace Rain Less than \( 0.25 \)
Light Rain \( 0.25 \) to \( 2.5 \)
Moderate Rain \( 2.6 \) to \( 7.5 \)
Heavy Rain \( 7.6 \) to \( 50.0 \)
Very Heavy Rain Greater than \( 50.0 \)

Analyzing 6 mm/h Rainfall Intensity

The question provides a rainfall with an intensity of \( 6 \text{ mm/h} \). To classify this rainfall intensity, we compare it with the standard intensity ranges:

  • Trace rain refers to rainfall with an intensity of less than \( 0.25 \text{ mm/h} \).
  • Light rain is classified when the intensity is between \( 0.25 \text{ mm/h} \) and \( 2.5 \text{ mm/h} \).
  • Moderate rain typically ranges from \( 2.6 \text{ mm/h} \) to \( 7.5 \text{ mm/h} \).
  • Heavy rain occurs when the intensity is between \( 7.6 \text{ mm/h} \) and \( 50.0 \text{ mm/h} \).

Since the given rainfall intensity of \( 6 \text{ mm/h} \) falls squarely within the \( 2.6 \text{ mm/h} \) to \( 7.5 \text{ mm/h} \) range, it is classified as moderate rain.

Conclusion on Rainfall Classification

Based on standard meteorological classifications of rainfall intensity, a rainfall rate of \( 6 \text{ mm/h} \) is accurately classified as moderate rain.

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Important Questions from Precipitation

  1. Cumulative frequency curve that shows the percent of time specified discharge were equaled or exceeded during a given period is known as ________.

  2. Which factors are used to compute precipitation?

  3. Unit of runoff is

  4. What is the formula of intensity of rainfall ?

  5. Mass curve of rainfall represents the plot of _______ against time.  
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