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National Snowfall Analysis

  • The National Snowfall Analysis, version 2, estimates snowfall in the recent past by gathering several operational data sets into a unified analysis.
  • The 24, 48, and 72 hour accumulations can also be browsed on an interactive map.
  • The climatological snowfall to liquid equivalent ratio (SLR) data used to generate the snowfall background (first guess) are available here.
  • These products are prototype data, and are offered here as a snapshot of our investigation and development of a routine snowfall analysis technique. The data shown on this page represent the second development stage, following version 1. For more information, refer to Updated NWS Technical Implementation Notice 15-05.
  • Transition of this analysis to an experimental product and towards future operations in accordance with NWSI 10-102 will be conducted in coordination with the Winter Weather Program
  • For questions, contact Greg Fall at gregory DOT fall AT noaa DOT gov.
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Page last modified: Jan 19, 2021
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