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National Operational Hydrologic
Remote Sensing Center

National Gridded Snowfall Analysis

The National Gridded Snowfall Analysis estimates snowfall in the recent past by gathering several operational data sets into a unified analysis. Snowfall observations are provided by numerous observing networks, including ASOS, COOP, CoCoRaHS, FAA, NWS spotters, and others.

  • The 24, 48, and 72 hour accumulations can also be browsed on an interactive map. (Look under the "Select Physical Element" dropdown for "SF Analysis" items.)
  • The climatological snowfall to liquid equivalent ratio (SLR) data used to generate the snowfall background (first guess) are available here.
  • For more information on the National Gridded Snowfall Analysis, see the Product Description Document (PDD).
  • For product questions, contact shawn DOT carter AT noaa DOT gov. For technical questions, contact gregory DOT fall AT noaa DOT gov.
Select Season, Date, Accumulation Duration and Data File Format

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National Operational Hydrologic Remote Sensing Center
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Page last modified: Oct 31, 2022
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