---
attributes: 'Contiguous U.S., extreme precipitation, observed'
cited_by: []
contributors:
  - display_name: 'Scientist : Kenneth Kunkel (Cooperative Institute for Climate and Satellites - NC) '
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    organization:
      country_code: US
      display_name: 'Cooperative Institute for Climate and Satellites - NC'
      identifier: cooperative-institute-climate-satellites-nc
      name: 'Cooperative Institute for Climate and Satellites - NC'
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      url: http://www.cicsnc.org/
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    person:
      display_name: Kenneth Kunkel
      first_name: Kenneth
      id: 1025
      last_name: Kunkel
      middle_name: E.
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create_dt: 2013-12-17T15:48:00
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figures:
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    caption: 'One measure of a heavy precipitation event is a 2-day precipitation total that is exceeded on average only once in a five-year period, also known as a once-in-five-year event. As this extreme precipitation index for 1901-2012 shows, the occurrence of such events has become much more common in recent decades. Changes are compared to the period 1901-1960, and do not include Alaska or Hawai‘i. The 2000s decade (far right bar) includes 2001-2012. (Figure source: adapted from Kunkel et al. 2013<tbib>b37557ac-ee97-4c28-98ca-4f1f1afe163b</tbib>).'
    chapter_identifier: our-changing-climate
    create_dt: 2013-12-17T16:02:55
    identifier: observed-us-trend-in-heavy-precipitation
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    ordinal: 16
    report_identifier: nca3
    source_citation: 'adapted from Kunkel et al. 2013<tbib>b37557ac-ee97-4c28-98ca-4f1f1afe163b</tbib>'
    submission_dt: ~
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    title: Observed U.S. Trend in Heavy Precipitation
    url: http://nca2014.globalchange.gov/highlights/report-findings/extreme-weather/graphics/observed-us-trends-heavy-precipitation
    usage_limits: Free to use with credit to the original figure source.
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time_end: 2012-12-31T00:00:00
time_start: 1901-01-01T00:00:00
title: Observed U.S. Trend in Heavy Precipitation
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