probable maximum precipitation


Also found in: Acronyms.

probable maximum precipitation

[′präb·ə·bəl ′mak·sə·məm pri‚sip·ə′tā·shən]
(meteorology)
The theoretically greatest depth of precipitation for a given duration that is physically possible over a particular drainage area at a certain time of year; in practice, this is derived over flat terrain by storm transposition and moisture adjustment to observed storm patterns.
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estimation of probable maximum precipitation for catchment in eastern by a generalized method .
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