PMP & PMF // SIGWX
Probable maximum precipitation (PMP) is considered the maximum precipitation possible for a location/area over a specific duration at a particular time of year. The National Weather Service, Army Corps of Engineers, Bureau of Reclamation, among others, developed the Hydrometeorological Reports’ (HMRs) series specifically for calculating the PMP for different regions across the United States. In addition, site-specific, state level, and regional PMP analyses continue to be conducted across the United States to update existing estimates from the HMRs – some of which are 40+ years old (e.g., HMR51, 1978).
The staff at Weather & Water have conducted: site-specific PMP analyses for reservoirs across the United States; served as a member on regional extreme precipitation studies (Colorado-New Mexico); been the Agency Technical Reviewer for multiple US Army Corps of Engineers’ PMP projects; and, calculated the probability of PMP for nuclear and dam safety applications. These PMP estimates and associated precipitation patterns are key to producing PMFs for design criteria across the nation and abroad. Let us help your firm with either or both!