Difference between revisions of "Rainfall frequency maps"
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[[File:St. Cloud rainfall frequencies.png|500px|alt=map showing rainfall frequency and volume percentiles as a function of precipitation depth for St. Cloud|Map showing rainfall frequency and volume percentiles as a function of precipitation depth for St. Cloud]] | [[File:St. Cloud rainfall frequencies.png|500px|alt=map showing rainfall frequency and volume percentiles as a function of precipitation depth for St. Cloud|Map showing rainfall frequency and volume percentiles as a function of precipitation depth for St. Cloud]] | ||
[[File:Thief River Falls rainfall frequencies.png|500px|alt=map showing rainfall frequency and volume percentiles as a function of precipitation depth for Thief River Falls|Map showing rainfall frequency and volume percentiles as a function of precipitation depth for Thief River Falls]] | [[File:Thief River Falls rainfall frequencies.png|500px|alt=map showing rainfall frequency and volume percentiles as a function of precipitation depth for Thief River Falls|Map showing rainfall frequency and volume percentiles as a function of precipitation depth for Thief River Falls]] | ||
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Revision as of 16:34, 17 August 2015
Information: Precipitation frequency information (Atlas 14) has been updated by the National Oceanic and Atmospheric Administration (NOAA). We recommend using Atlas 14. However, the Minnesota Stormwater Manual has not been updated to reflect Atlas 14. The Manual will eventually be updated using Atlas 14 information.
NOAA's Atlas 14, Volume 8 precipitation frequency information can be found on NOAA's precipitation frequency data server.
This page provides the following information on rainfall frequency distributions for Minnesota using Technical Paper 40.
- Rainfall frequency curves for the 1, 2, 5, 10, 25, 50, and 100 year 24-hour rainfall events for Minnesota. The source of the data is Technical Paper 40 (National Oceanic and Atmospheric Administration)
- Rainfall frequency and volume percentiles as a function of precipitation depth for ten locations in Minnesota. Rainfall frequency specifies the number of 24-hour rain events, expressed as a percent of all events, that are less than a certain depth. Volume represents the total annual volume of rain that is associated with a particular rain depth. For example, 88 percent of rain events in Cloquet are 1 inch or less, while rain events of one inch or less account for 60 percent of the annual volume.
Information: To view the title of an image hold the mouse over the image. To view the image click on the image. Most views show higher resolution depictions of the image.
