Interstorm Relations in Pacific Northwest

by Ralph H. Frederick, Meteorologist; Special Studies Branch, Water Management Information Div., Office of Hydrology, National Weather Service, NOAA, U.S. Dept. of Commerce, Silver Spring, Md.,

Serial Information: Journal of the Hydraulics Division, 1978, Vol. 104, Issue 12, Pg. 1577-1586

Document Type: Journal Paper


Annual maximum precipitation events for 1-hr, 2-hr, 3-hr, 6-hr, 12-hr, and 24-hr durations are identified. The concurrent event for each other duration is then selected. The relations between the annual maximum events and the concurrent rainfall for each other duration (which may or may not also be an annual maximum event) are studied. The interduration relations are shown to vary according to relative storm size and to be different in coastal and inland areas. A new method of developing mass precipitation curves for synthesized storms is proposed for use in hydrologic design and engineering studies.

Subject Headings: Storms | Hydrologic engineering | Rainfall duration | Coastal environment | Curvature | Hydrologic models | Pacific Northwest | United States

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