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This page provides 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 ([http://www.nws.noaa.gov/oh/hdsc/PF_documents/TechnicalPaper_No40.pdf National Oceanic and Atmospheric Administration])
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{{alert|Precipitation frequency information (Atlas 14) has been updated by the National Oceanic and Atmospheric Administration (NOAA). We recommend using Atlas 14.|alert-info}}
  
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NOAA's Atlas 14, Volume 8 precipitation frequency information can be found on [https://hdsc.nws.noaa.gov/hdsc/pfds/pfds_map_cont.html?bkmrk=mn NOAA's precipitation frequency data server]. Rainfall frequency maps from [http://www.nws.noaa.gov/oh/hdsc/PF_documents/TechnicalPaper_No40.pdf Technical Paper 40] have been moved to [[Technical Paper 40 rainfall frequency maps|this page]]. Although we recommend going to the NOAA site for rainfall information, we've provided rainfall frequency plots for several locations in Minnesota. To see a comparison of Atlas 14 and TP-40, [http://stormwater.pca.state.mn.us/index.php/File:Atlas_14_and_TP_40_comparison.png link here]. For additional information on Atlas 14 and comparisons with TP-40, see the following pages.
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*[http://www.ceam.org/vertical/Sites/%7BD96B0887-4D81-47D5-AA86-9D2FB8BC0796%7D/uploads/8SessionRainfallAtlas.pdf Rainfall Atlas 14: Replacement of Technical Paper 40]
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*[http://www.nws.noaa.gov/oh/hdsc/FAQ.html Frequently Asked Questions about Atlas 14]
  
[[File:1 year 24 hour rainfall.jpg|300 px]]
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To see information on frequency-volume relationships, see [http://stormwater.pca.state.mn.us/index.php/Rainfall_volume-frequency_maps this page] or [http://stormwater.pca.state.mn.us/images/a/a8/Issue_paper_B_-_precipitation_frequency_analysis_and_use.pdf Issue Paper B].
[[File:2 year 24 hour rainfall.jpg|300 px]]
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[[File:5 year 24 hour rainfall.jpg|300 px]]
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[[file:Atlas 14 MSP airport.png|400px|left|thumb|alt=MSP airport Atlas 14 graphs|<font size=3>'''Minneapolis-St. Paul International Airport'''</font size>]]
[[File:10 year 24 hour rainfall.jpg|300 px]]
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[[File:25 year 24 hour rainfall.jpg|300 px]]
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[[file:Atlas 14 Rochester airport.png|400px|right|thumb|alt=Rochester airport Atlas 14 graphs|<font size=3>'''Rochester International Airport'''</font size>]]
[[File:50 year 24 hour rainfall.jpg|300 px]]
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[[File:100 year 24 hour rainfall.jpg|300 px]]
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[[file:Atlas 14 Marshall.png|400px|left|thumb|alt=Marshall Atlas 14 graphs|<font size=3>'''Marshall'''</font size>]]
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[[file:Atlas 14 Morris.png|400px|right|thumb|alt=Morris Atlas 14 graphs|<font size=3>'''Morris'''</font size>]]
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[[file:Atlas 14 Crookston.png|400px|left|thumb|alt=Crookston Atlas 14 graphs|<font size=3>'''Crookston'''</font size>]]
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[[file:Atlas 14 International Falls.png|400px|right|thumb|alt=International Falls Atlas 14 graphs|<font size=3>'''International Falls'''</font size>]]
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[[file:Atlas 14 Duluth.png|400px|left|thumb|alt=Duluth Atlas 14 graphs|<font size=3>'''Duluth'''</font size>]]
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[[file:Atlas 14 Grand Marais.png|400px|right|thumb|alt=Grand Marais Atlas 14 graphs|<font size=3>'''Grand Marais'''</font size>]]
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[[file:Atlas 14 Brainerd.png|400px|left|thumb|alt=Brainerd Atlas 14 graphs|<font size=3>'''Brainerd'''</font size>]]
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[[file:Atlas 14 St Cloud.png|400px|right|thumb|alt=St. Cloud Atlas 14 graphs|<font size=3>'''St. Cloud'''</font size>]]
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<noinclude>
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[[category:maps]]
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</noinclude>

Revision as of 20:33, 4 March 2022

Information: Precipitation frequency information (Atlas 14) has been updated by the National Oceanic and Atmospheric Administration (NOAA). We recommend using Atlas 14.

NOAA's Atlas 14, Volume 8 precipitation frequency information can be found on NOAA's precipitation frequency data server. Rainfall frequency maps from Technical Paper 40 have been moved to this page. Although we recommend going to the NOAA site for rainfall information, we've provided rainfall frequency plots for several locations in Minnesota. To see a comparison of Atlas 14 and TP-40, link here. For additional information on Atlas 14 and comparisons with TP-40, see the following pages.

To see information on frequency-volume relationships, see this page or Issue Paper B.

MSP airport Atlas 14 graphs
Minneapolis-St. Paul International Airport
Rochester airport Atlas 14 graphs
Rochester International Airport
Marshall Atlas 14 graphs
Marshall
Morris Atlas 14 graphs
Morris
Crookston Atlas 14 graphs
Crookston
International Falls Atlas 14 graphs
International Falls
Duluth Atlas 14 graphs
Duluth
Grand Marais Atlas 14 graphs
Grand Marais
Brainerd Atlas 14 graphs
Brainerd
St. Cloud Atlas 14 graphs
St. Cloud