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National Operational Hydrologic
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National Snow Analysis Normals

The National Snow Analysis (NSA) has been operational since October 2004. This page provides a variety of images that help to place current snow conditions in the context of the Period of Record constituted by all preceding years of NSA operations.

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The page will refresh upon selecting a new season.

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National Operational Hydrologic Remote Sensing Center
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Chanhassen, MN 55317

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Page last modified: Jun 24, 2019
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