U.S. Hourly Precipitation Data

Precipitation Hourly

browse graphicHourly Precipitation Data GIS image
Hourly Precipitation Data (HPD) is digital data set DSI-3240, archived at the National Climatic Data Center (NCDC). The primary source of data for this file is approximately 5,500 US National Weather Service (NWS), Federal Aviation Administration (FAA), and cooperative observer stations in the United States of America, Puerto Rico, the US Virgin Islands, and various Pacific Islands. The earliest data dates vary considerably by state and region: Maine, Pennsylvania, and Texas have data since 1900. The western Pacific region that includes Guam, American Samoa, Marshall Islands, Micronesia, and Palau have data since 1978. Other states and regions have earliest dates between those extremes. The latest data in all states and regions is from the present day. The major parameter in DSI-3240 is precipitation amounts, which are measurements of hourly or daily precipitation accumulation. Accumulation was for longer periods of time if for any reason the rain gauge was out of service or no observer was present. DSI 3240_01 contains data grouped by state; DSI 3240_02 contains data grouped by year.

Cite dataset when used as a source.

  • NCEI DSI 3240_01
  • NCEI DSI 3240_02
  • gov.noaa.ncdc:C00313
Dataset Information
Online Access
Distribution Formats
  • CSV
  • fixed-length ASCII text
  • ArcGIS
  • KMZ
  • PDF
DistributorDOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
Dataset  Point of Contact Customer Engagement Branch
DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
+1 828-271-4800
ncdc.orders@noaa.gov
General Documentation
Associated Resources
Publisher
  • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
  • DOC/NOAA/NESDIS/NCDC > National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce
Originator
  • DOC/NOAA/NESDIS/NCDC > National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce
Date(s)
  • publication: 1951-10
Data Presentation Form: Digital table - digital representation of facts or figures systematically displayed, especially in columns
Dataset Progress Status Under development
Data Update Frequency: As needed
Purpose:This dataset contains historical hourly precipitation observations for selected U.S. stations. Data values are typically delayed six months or more.
Time Period:1940-01-01  to  Present
Spatial Bounding Box Coordinates:
N: 72.0
S: -15.0
E: -60.0
W: 130.0
Spatial Coverage Map:
Theme keywords
  • Atmosphere > Altitude > Station Height
  • Atmosphere > Precipitation > Precipitation Amount
  • Atmosphere > Precipitation > Precipitation Rate
  • Atmosphere > Precipitation > Rain
  • Atmosphere > Precipitation > Liquid Water Equivalent
Data Center keywords
  • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
  • DOC/NOAA/NESDIS/NCDC > National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce
Place keywords
  • Geographic Region > Polar
  • Geographic Region > Mid-latitude
  • Geographic Region > Equatorial
  • Continent > North America > United States Of America
  • Ocean > Atlantic Ocean > North Atlantic Ocean > Caribbean Sea > Puerto Rico
  • Ocean > Atlantic Ocean > North Atlantic Ocean > Caribbean Sea > Virgin Islands
  • Ocean > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands
  • Ocean > Pacific Ocean > Western Pacific Ocean > Guam
  • Ocean > Pacific Ocean > Central Pacific Ocean > American Samoa
  • Ocean > Pacific Ocean > Western Pacific Ocean > Micronesia > Marshall Islands
  • Ocean > Pacific Ocean > Western Pacific Ocean > Micronesia
  • Ocean > Pacific Ocean > Western Pacific Ocean > Micronesia > Palau
Stratum keywords
  • Vertical Location > Land Surface
Use Constraints
  • Cite dataset when used as a source.
  • NCEI cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NCEI makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty. NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
Fees
  • Electronic downloads of the data are free, however fees may apply for data certifications and data distribution on physical media.
Lineage StatementThe data in this file are a combination of original observations of hourly and daily accumulated precipitation. Precipitation values are checked and edited as necessary by an automated and manual edit.
Processing Steps
  • Fischer-Porter precipitation gauges record data on punched paper tapes. A device known as the Mitron reader translates the data at NCDC. The Universal Rain gauge records data on paper charts. The precipitation recorded on the charts is then digitized. The data from the Surface Climate Information Archive and Dissemination System (SCIADS) or primary stations is also entered.
  • NOAA created the National Centers for Environmental Information (NCEI) by merging NOAA's National Climatic Data Center (NCDC), National Geophysical Data Center (NGDC), and National Oceanographic Data Center (NODC), including the National Coastal Data Development Center (NCDDC), per the Consolidated and Further Continuing Appropriations Act, 2015, Public Law 113-235. NCEI launched publicly on April 22, 2015.
Source Datasets
  • Data from weighing rain gages, Fischer-Porter gages, Universal rain gages and in recent years, more modern measuring equipment in conjunction with automated recording sites
    • Description of Source: Keyed and digitized rain gage forms (historic) and digitally captured precipitation from automated stations (modern).
    • Temporal extent used:  1940-01-01  to  present

Last Modified: 2016-01-15

For questions about the information on this page, please email: ncdc.metadata@noaa.gov