Intensity
Precipitation is measured using a rain gauge. When classified according to the rate of precipitation, rain can be divided into categories. Very light rain describes rainfall with a precipitation rate of less than 0.25 millimetres (0.0098 in) per hour. Light rain describes rainfall which falls at a rate of between 0.25 millimetres (0.0098 in) and 1 millimetre (0.039 in) per hour. Moderate rain describes rainfall with a precipitation rate of between 1 millimetre (0.039 in) and 4 millimetres (0.16 in) per hour. Heavy rain describes rainfall with a precipitation rate of between 4 millimetres (0.16 in) and 16 millimetres (0.63 in) per hour. Very heavy rain terminology can be used when the precipitation rate is between 16 millimetres (0.63 in) and 50 millimetres (2.0 in) per hour. Extreme rain can describe rainfall with precipitation rates exceeding 50 millimetres (2.0 in) per hour.
Snowfall's intensity is determined by visibility. When the visibility is over 1 kilometre (0.62 mi), snow is determined to be light. Moderate snow describes snowfall with visibility restrictions between .5 kilometres (0.31 mi) and 1 kilometre (0.62 mi). Heavy snowfall describes conditions when visibility is restricted below .5 kilometres (0.31 mi).
Read more about this topic: Precipitation Types
Famous quotes containing the word intensity:
“When a book, any sort of book, reaches a certain intensity of artistic performance it becomes literature. That intensity may be a matter of style, situation, character, emotional tone, or idea, or half a dozen other things. It may also be a perfection of control over the movement of a story similar to the control a great pitcher has over the ball.”
—Raymond Chandler (1888–1959)
“As siblings we were inextricably bound, even though our connections were loose and frayed.... And each time we met, we discovered to our surprise and dismay how quickly the intensity of childhood feelings reappeared.... No matter how old we got or how often we tried to show another face, reality was filtered through yesterday’s memories.”
—Jane Mersky Leder (20th century)
“Consider the difference between looking and staring. A look is voluntary; it is also mobile, rising and falling in intensity as its foci of interest are taken up and then exhausted. A stare has, essentially, the character of a compulsion; it is steady, unmodulated, “fixed.””
—Susan Sontag (b. 1933)