What do “deficient”, “average” and “normal” rainfall mean?
In India, the “average” rainfall or the long-period average (LPA) is the average of rainfall between 1951 and 2000, which is 89 cm.
A normal monsoon is one when rainfall is between 96% and 104% of the LPA.
An “above normal” monsoon occurs when rainfall remains between 104% 110% of the LPA.
If the rainfall is more than 110% of the LPA, then it is called “excess”.
Credits : Hindustan Times
In India, the “average” rainfall or the long-period average (LPA) is the average of rainfall between 1951 and 2000, which is 89 cm.
A normal monsoon is one when rainfall is between 96% and 104% of the LPA.
An “above normal” monsoon occurs when rainfall remains between 104% 110% of the LPA.
If the rainfall is more than 110% of the LPA, then it is called “excess”.
Credits : Hindustan Times
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