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"How much rain fell, and where?" These pages help answer this question, but the real question is "How can I use this information to make decisions?" This page provides links to various National Weather Service resources that you may find relevant. The list is by no means exhaustive, so please visit http://www.weather.gov for more information.

Current Weather Information Drought Information Climate Information and Historical Data
  • National Climatic Data Center (NCDC) - The world's largest weather archive, the only source for official, certified past weather data.
  • National Weather Service Climate Pages - Drill down to the your local Weather Forecast Office for free past-weather information.
  • Precipitation Frequency Estimates - Probabilistic climate information that relates rainfall magnitudes and durations to how often they occur. (For example, at the airport in Cleveland, OH, 2.64 inches of rain in an hour has a 1% chance of being exceeded in any given year. People often refer to this as the "100-year rainfall" at that location)
  • Probable Maximum Precipitation - The greatest depth of rainfall physically possible at a particular location.
Snow Information Seasonal Information
 

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