Washington Snow Depth

1:1,100,000

20 inch by 24 inch flat wall map, printed on heavy fine paper. Shipped rolled.

A representation of the average snow depth in mid-March for the 20 seasons from 2004 - 2023, often the deepest moment of the year for the snowpack. This map features prominent passes for touring and all currently operating alpine ski resorts in the state of Washington. Detailed reference labels includes cities/towns/places, state parks, alpine ski areas, highways/major roads, prominent summits of interest, landforms of significance, National Park units, Indian Reservations, National Wildlife Refuges. The Pacific Crest Trail and Pacific Northwest Trail are also featured.

MORE ABOUT THIS MAP AND THE DATA

This map presents the average value of snow depth modeled for March 15th from the 20 year period of 2004 thru 2023. The mean was calculated by Mitchell Geography from data produced by the NOAA National Weather Service's National Operational Hydrologic Remote Sensing Center (NOHRSC) SNOw Data Assimilation System (SNODAS). SNODAS is a modelling and data assimilation system developed by the NOHRSC to provide the best possible estimates of snow cover and associated variables to support hydrologic modelling and analysis. NOHRSC products are gridded data sets for the continential United States at 1-km spatial resolution and 24-hour temporal resolution.SNODAS models are run each day, with analysts deciding whether or not to use remote sensing and ground based observations (e.g. SNOTEL) to update the snow water equivalent state in the model.

Data Citation:

National Operational Hydrologic Remote Sensing Center. 2004 -2023. Snow Data Assimilation System (SNODAS) data products at NSIDC. Boulder, CO: National Snow and Ice Data Center. Digital media.